Issue:
Bug: [FEATURE] [CONNECTOR] Checkbook



### Feature Description

Integrate a new connector : Checkbook
API Ref: https://docs.checkbook.io/reference/

### Possible Implementation

Integrate a new connector : Checkbook
API Ref: https://docs.checkbook.io/reference/

### Have you spent some time checking if this feature request has been raised before?

- [x] I checked and didn't find a similar issue

### Have you read the Contributing Guidelines?

- [x] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### Are you willing to submit a PR?

Yes, I am willing to submit a PR!

Pull request description:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [x] New feature
- [ ] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

Closes this [issue](https://github.com/juspay/hyperswitch/issues/8493)

## Description
<!-- Describe your changes in detail -->

Added template code for [Checkbook](https://docs.checkbook.io/reference/)

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

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1. `config`
2. `crates/router/src/configs`
3. `loadtest/config`
-->


## Motivation and Context
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If it fixes an open issue, please link to the issue here.

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## How did you test it?
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Did you write an integration/unit/API test to verify the code changes?
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No tests required


## Checklist
<!-- Put an `x` in the boxes that apply -->

- [x] I formatted the code `cargo +nightly fmt --all`
- [x] I addressed lints thrown by `cargo clippy`
- [x] I reviewed the submitted code
- [ ] I added unit tests for my changes where possible


Testing:


No tests required

Patch:
diff --git a/config/config.example.toml b/config/config.example.toml
index c781ec3705b..7d072f93e47 100644
--- a/config/config.example.toml
+++ b/config/config.example.toml
@@ -203,6 +203,7 @@ boku.base_url = "https://$-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
 chargebee.base_url = "https://$.chargebee.com/api/"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api-sandbox.coingate.com"
@@ -344,6 +345,7 @@ cards = [
     "coingate",
   "cryptopay",
   "braintree",
+  "checkbook",
   "checkout",
   "cybersource",
   "datatrans",
diff --git a/config/deployments/integration_test.toml b/config/deployments/integration_test.toml
index 898a84e7db0..2431f89a0ab 100644
--- a/config/deployments/integration_test.toml
+++ b/config/deployments/integration_test.toml
@@ -42,6 +42,7 @@ boku.base_url = "https://$-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
 chargebee.base_url = "https://$.chargebee.com/api/"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api-sandbox.coingate.com"
diff --git a/config/deployments/production.toml b/config/deployments/production.toml
index f08bb64136c..2f4e00d1137 100644
--- a/config/deployments/production.toml
+++ b/config/deployments/production.toml
@@ -46,6 +46,7 @@ boku.base_url = "https://country-api4-stage.boku.com"
 braintree.base_url = "https://payments.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster14.api.cashtocode.com"
 chargebee.base_url = "https://{{merchant_endpoint_prefix}}.chargebee.com/api/"
+checkbook.base_url = "https://api.checkbook.io"
 checkout.base_url = "https://api.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api.coingate.com"
diff --git a/config/deployments/sandbox.toml b/config/deployments/sandbox.toml
index e48ddf3ff0b..b05d9d04a82 100644
--- a/config/deployments/sandbox.toml
+++ b/config/deployments/sandbox.toml
@@ -45,6 +45,7 @@ bluesnap.secondary_base_url = "https://sandpay.bluesnap.com/"
 boku.base_url = "https://$-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 chargebee.base_url = "https://$.chargebee.com/api/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
diff --git a/config/development.toml b/config/development.toml
index d340abae6ef..84afa679d11 100644
--- a/config/development.toml
+++ b/config/development.toml
@@ -109,6 +109,7 @@ cards = [
     "bluesnap",
     "boku",
     "braintree",
+    "checkbook",
     "checkout",
     "coinbase",
     "coingate",
@@ -237,6 +238,7 @@ boku.base_url = "https://$-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
 chargebee.base_url = "https://$.chargebee.com/api/"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api-sandbox.coingate.com"
diff --git a/config/docker_compose.toml b/config/docker_compose.toml
index 31ecb58bb6f..80a672453ea 100644
--- a/config/docker_compose.toml
+++ b/config/docker_compose.toml
@@ -129,6 +129,7 @@ boku.base_url = "https://$-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
 chargebee.base_url = "https://$.chargebee.com/api/"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api-sandbox.coingate.com"
@@ -258,6 +259,7 @@ cards = [
     "boku",
     "braintree",
     "checkout",
+    "checkbook",
     "coinbase",
     "coingate",
     "cryptopay",
diff --git a/crates/common_enums/src/connector_enums.rs b/crates/common_enums/src/connector_enums.rs
index 58c627cca84..afe83a0f40f 100644
--- a/crates/common_enums/src/connector_enums.rs
+++ b/crates/common_enums/src/connector_enums.rs
@@ -75,6 +75,7 @@ pub enum RoutableConnectors {
     Braintree,
     Cashtocode,
     Chargebee,
+    // Checkbook,
     Checkout,
     Coinbase,
     Coingate,
@@ -231,6 +232,7 @@ pub enum Connector {
     Braintree,
     Cashtocode,
     Chargebee,
+    // Checkbook,
     Checkout,
     Coinbase,
     Coingate,
@@ -414,6 +416,7 @@ impl Connector {
             | Self::Braintree
             | Self::Cashtocode
             | Self::Chargebee
+            // | Self::Checkbook
             | Self::Coinbase
             | Self::Coingate
             | Self::Cryptopay
@@ -575,6 +578,7 @@ impl From<RoutableConnectors> for Connector {
             RoutableConnectors::Braintree => Self::Braintree,
             RoutableConnectors::Cashtocode => Self::Cashtocode,
             RoutableConnectors::Chargebee => Self::Chargebee,
+            // RoutableConnectors::Checkbook => Self::Checkbook,
             RoutableConnectors::Checkout => Self::Checkout,
             RoutableConnectors::Coinbase => Self::Coinbase,
             RoutableConnectors::Cryptopay => Self::Cryptopay,
@@ -694,6 +698,7 @@ impl TryFrom<Connector> for RoutableConnectors {
             Connector::Braintree => Ok(Self::Braintree),
             Connector::Cashtocode => Ok(Self::Cashtocode),
             Connector::Chargebee => Ok(Self::Chargebee),
+            // Connector::Checkbook => Ok(Self::Checkbook),
             Connector::Checkout => Ok(Self::Checkout),
             Connector::Coinbase => Ok(Self::Coinbase),
             Connector::Coingate => Ok(Self::Coingate),
diff --git a/crates/connector_configs/src/connector.rs b/crates/connector_configs/src/connector.rs
index 62ad0993f03..abf73e20acc 100644
--- a/crates/connector_configs/src/connector.rs
+++ b/crates/connector_configs/src/connector.rs
@@ -191,6 +191,7 @@ pub struct ConnectorConfig {
     pub braintree: Option<ConnectorTomlConfig>,
     pub cashtocode: Option<ConnectorTomlConfig>,
     pub chargebee: Option<ConnectorTomlConfig>,
+    pub checkbook: Option<ConnectorTomlConfig>,
     pub checkout: Option<ConnectorTomlConfig>,
     pub coinbase: Option<ConnectorTomlConfig>,
     pub coingate: Option<ConnectorTomlConfig>,
diff --git a/crates/hyperswitch_connectors/src/connectors.rs b/crates/hyperswitch_connectors/src/connectors.rs
index 9f1355a1372..55f2047a59f 100644
--- a/crates/hyperswitch_connectors/src/connectors.rs
+++ b/crates/hyperswitch_connectors/src/connectors.rs
@@ -16,6 +16,7 @@ pub mod boku;
 pub mod braintree;
 pub mod cashtocode;
 pub mod chargebee;
+pub mod checkbook;
 pub mod checkout;
 pub mod coinbase;
 pub mod coingate;
@@ -114,8 +115,8 @@ pub use self::{
     amazonpay::Amazonpay, archipel::Archipel, authorizedotnet::Authorizedotnet, bambora::Bambora,
     bamboraapac::Bamboraapac, bankofamerica::Bankofamerica, barclaycard::Barclaycard,
     billwerk::Billwerk, bitpay::Bitpay, bluesnap::Bluesnap, boku::Boku, braintree::Braintree,
-    cashtocode::Cashtocode, chargebee::Chargebee, checkout::Checkout, coinbase::Coinbase,
-    coingate::Coingate, cryptopay::Cryptopay, ctp_mastercard::CtpMastercard,
+    cashtocode::Cashtocode, chargebee::Chargebee, checkbook::Checkbook, checkout::Checkout,
+    coinbase::Coinbase, coingate::Coingate, cryptopay::Cryptopay, ctp_mastercard::CtpMastercard,
     cybersource::Cybersource, datatrans::Datatrans, deutschebank::Deutschebank,
     digitalvirgo::Digitalvirgo, dlocal::Dlocal, dwolla::Dwolla, ebanx::Ebanx, elavon::Elavon,
     facilitapay::Facilitapay, fiserv::Fiserv, fiservemea::Fiservemea, fiuu::Fiuu, forte::Forte,
diff --git a/crates/hyperswitch_connectors/src/connectors/checkbook.rs b/crates/hyperswitch_connectors/src/connectors/checkbook.rs
new file mode 100644
index 00000000000..e0f31ceb57f
--- /dev/null
+++ b/crates/hyperswitch_connectors/src/connectors/checkbook.rs
@@ -0,0 +1,571 @@
+pub mod transformers;
+
+use common_utils::{
+    errors::CustomResult,
+    ext_traits::BytesExt,
+    request::{Method, Request, RequestBuilder, RequestContent},
+    types::{AmountConvertor, FloatMajorUnit, FloatMajorUnitForConnector},
+};
+use error_stack::{report, ResultExt};
+use hyperswitch_domain_models::{
+    router_data::{AccessToken, ConnectorAuthType, ErrorResponse, RouterData},
+    router_flow_types::{
+        access_token_auth::AccessTokenAuth,
+        payments::{Authorize, Capture, PSync, PaymentMethodToken, Session, SetupMandate, Void},
+        refunds::{Execute, RSync},
+    },
+    router_request_types::{
+        AccessTokenRequestData, PaymentMethodTokenizationData, PaymentsAuthorizeData,
+        PaymentsCancelData, PaymentsCaptureData, PaymentsSessionData, PaymentsSyncData,
+        RefundsData, SetupMandateRequestData,
+    },
+    router_response_types::{PaymentsResponseData, RefundsResponseData},
+    types::{
+        PaymentsAuthorizeRouterData, PaymentsCaptureRouterData, PaymentsSyncRouterData,
+        RefundSyncRouterData, RefundsRouterData,
+    },
+};
+use hyperswitch_interfaces::{
+    api::{
+        self, ConnectorCommon, ConnectorCommonExt, ConnectorIntegration, ConnectorSpecifications,
+        ConnectorValidation,
+    },
+    configs::Connectors,
+    errors,
+    events::connector_api_logs::ConnectorEvent,
+    types::{self, Response},
+    webhooks,
+};
+use masking::{ExposeInterface, Mask};
+use transformers as checkbook;
+
+use crate::{constants::headers, types::ResponseRouterData, utils};
+
+#[derive(Clone)]
+pub struct Checkbook {
+    amount_converter: &'static (dyn AmountConvertor<Output = FloatMajorUnit> + Sync),
+}
+
+impl Checkbook {
+    pub fn new() -> &'static Self {
+        &Self {
+            amount_converter: &FloatMajorUnitForConnector,
+        }
+    }
+}
+
+impl api::Payment for Checkbook {}
+impl api::PaymentSession for Checkbook {}
+impl api::ConnectorAccessToken for Checkbook {}
+impl api::MandateSetup for Checkbook {}
+impl api::PaymentAuthorize for Checkbook {}
+impl api::PaymentSync for Checkbook {}
+impl api::PaymentCapture for Checkbook {}
+impl api::PaymentVoid for Checkbook {}
+impl api::Refund for Checkbook {}
+impl api::RefundExecute for Checkbook {}
+impl api::RefundSync for Checkbook {}
+impl api::PaymentToken for Checkbook {}
+
+impl ConnectorIntegration<PaymentMethodToken, PaymentMethodTokenizationData, PaymentsResponseData>
+    for Checkbook
+{
+    // Not Implemented (R)
+}
+
+impl<Flow, Request, Response> ConnectorCommonExt<Flow, Request, Response> for Checkbook
+where
+    Self: ConnectorIntegration<Flow, Request, Response>,
+{
+    fn build_headers(
+        &self,
+        req: &RouterData<Flow, Request, Response>,
+        _connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        let mut header = vec![(
+            headers::CONTENT_TYPE.to_string(),
+            self.get_content_type().to_string().into(),
+        )];
+        let mut api_key = self.get_auth_header(&req.connector_auth_type)?;
+        header.append(&mut api_key);
+        Ok(header)
+    }
+}
+
+impl ConnectorCommon for Checkbook {
+    fn id(&self) -> &'static str {
+        "checkbook"
+    }
+
+    fn get_currency_unit(&self) -> api::CurrencyUnit {
+        api::CurrencyUnit::Base
+    }
+
+    fn common_get_content_type(&self) -> &'static str {
+        "application/json"
+    }
+
+    fn base_url<'a>(&self, connectors: &'a Connectors) -> &'a str {
+        connectors.checkbook.base_url.as_ref()
+    }
+
+    fn get_auth_header(
+        &self,
+        auth_type: &ConnectorAuthType,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        let auth = checkbook::CheckbookAuthType::try_from(auth_type)
+            .change_context(errors::ConnectorError::FailedToObtainAuthType)?;
+        Ok(vec![(
+            headers::AUTHORIZATION.to_string(),
+            auth.api_key.expose().into_masked(),
+        )])
+    }
+
+    fn build_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        let response: checkbook::CheckbookErrorResponse = res
+            .response
+            .parse_struct("CheckbookErrorResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+
+        Ok(ErrorResponse {
+            status_code: res.status_code,
+            code: response.code,
+            message: response.message,
+            reason: response.reason,
+            attempt_status: None,
+            connector_transaction_id: None,
+            network_advice_code: None,
+            network_decline_code: None,
+            network_error_message: None,
+        })
+    }
+}
+
+impl ConnectorValidation for Checkbook {
+    //TODO: implement functions when support enabled
+}
+
+impl ConnectorIntegration<Session, PaymentsSessionData, PaymentsResponseData> for Checkbook {
+    //TODO: implement sessions flow
+}
+
+impl ConnectorIntegration<AccessTokenAuth, AccessTokenRequestData, AccessToken> for Checkbook {}
+
+impl ConnectorIntegration<SetupMandate, SetupMandateRequestData, PaymentsResponseData>
+    for Checkbook
+{
+}
+
+impl ConnectorIntegration<Authorize, PaymentsAuthorizeData, PaymentsResponseData> for Checkbook {
+    fn get_headers(
+        &self,
+        req: &PaymentsAuthorizeRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &PaymentsAuthorizeRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_url method".to_string()).into())
+    }
+
+    fn get_request_body(
+        &self,
+        req: &PaymentsAuthorizeRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<RequestContent, errors::ConnectorError> {
+        let amount = utils::convert_amount(
+            self.amount_converter,
+            req.request.minor_amount,
+            req.request.currency,
+        )?;
+
+        let connector_router_data = checkbook::CheckbookRouterData::from((amount, req));
+        let connector_req = checkbook::CheckbookPaymentsRequest::try_from(&connector_router_data)?;
+        Ok(RequestContent::Json(Box::new(connector_req)))
+    }
+
+    fn build_request(
+        &self,
+        req: &PaymentsAuthorizeRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        Ok(Some(
+            RequestBuilder::new()
+                .method(Method::Post)
+                .url(&types::PaymentsAuthorizeType::get_url(
+                    self, req, connectors,
+                )?)
+                .attach_default_headers()
+                .headers(types::PaymentsAuthorizeType::get_headers(
+                    self, req, connectors,
+                )?)
+                .set_body(types::PaymentsAuthorizeType::get_request_body(
+                    self, req, connectors,
+                )?)
+                .build(),
+        ))
+    }
+
+    fn handle_response(
+        &self,
+        data: &PaymentsAuthorizeRouterData,
+        event_builder: Option<&mut ConnectorEvent>,
+        res: Response,
+    ) -> CustomResult<PaymentsAuthorizeRouterData, errors::ConnectorError> {
+        let response: checkbook::CheckbookPaymentsResponse = res
+            .response
+            .parse_struct("Checkbook PaymentsAuthorizeResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+        RouterData::try_from(ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res, event_builder)
+    }
+}
+
+impl ConnectorIntegration<PSync, PaymentsSyncData, PaymentsResponseData> for Checkbook {
+    fn get_headers(
+        &self,
+        req: &PaymentsSyncRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &PaymentsSyncRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_url method".to_string()).into())
+    }
+
+    fn build_request(
+        &self,
+        req: &PaymentsSyncRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        Ok(Some(
+            RequestBuilder::new()
+                .method(Method::Get)
+                .url(&types::PaymentsSyncType::get_url(self, req, connectors)?)
+                .attach_default_headers()
+                .headers(types::PaymentsSyncType::get_headers(self, req, connectors)?)
+                .build(),
+        ))
+    }
+
+    fn handle_response(
+        &self,
+        data: &PaymentsSyncRouterData,
+        event_builder: Option<&mut ConnectorEvent>,
+        res: Response,
+    ) -> CustomResult<PaymentsSyncRouterData, errors::ConnectorError> {
+        let response: checkbook::CheckbookPaymentsResponse = res
+            .response
+            .parse_struct("checkbook PaymentsSyncResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+        RouterData::try_from(ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res, event_builder)
+    }
+}
+
+impl ConnectorIntegration<Capture, PaymentsCaptureData, PaymentsResponseData> for Checkbook {
+    fn get_headers(
+        &self,
+        req: &PaymentsCaptureRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &PaymentsCaptureRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_url method".to_string()).into())
+    }
+
+    fn get_request_body(
+        &self,
+        _req: &PaymentsCaptureRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<RequestContent, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_request_body method".to_string()).into())
+    }
+
+    fn build_request(
+        &self,
+        req: &PaymentsCaptureRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        Ok(Some(
+            RequestBuilder::new()
+                .method(Method::Post)
+                .url(&types::PaymentsCaptureType::get_url(self, req, connectors)?)
+                .attach_default_headers()
+                .headers(types::PaymentsCaptureType::get_headers(
+                    self, req, connectors,
+                )?)
+                .set_body(types::PaymentsCaptureType::get_request_body(
+                    self, req, connectors,
+                )?)
+                .build(),
+        ))
+    }
+
+    fn handle_response(
+        &self,
+        data: &PaymentsCaptureRouterData,
+        event_builder: Option<&mut ConnectorEvent>,
+        res: Response,
+    ) -> CustomResult<PaymentsCaptureRouterData, errors::ConnectorError> {
+        let response: checkbook::CheckbookPaymentsResponse = res
+            .response
+            .parse_struct("Checkbook PaymentsCaptureResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+        RouterData::try_from(ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res, event_builder)
+    }
+}
+
+impl ConnectorIntegration<Void, PaymentsCancelData, PaymentsResponseData> for Checkbook {}
+
+impl ConnectorIntegration<Execute, RefundsData, RefundsResponseData> for Checkbook {
+    fn get_headers(
+        &self,
+        req: &RefundsRouterData<Execute>,
+        connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &RefundsRouterData<Execute>,
+        _connectors: &Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_url method".to_string()).into())
+    }
+
+    fn get_request_body(
+        &self,
+        req: &RefundsRouterData<Execute>,
+        _connectors: &Connectors,
+    ) -> CustomResult<RequestContent, errors::ConnectorError> {
+        let refund_amount = utils::convert_amount(
+            self.amount_converter,
+            req.request.minor_refund_amount,
+            req.request.currency,
+        )?;
+
+        let connector_router_data = checkbook::CheckbookRouterData::from((refund_amount, req));
+        let connector_req = checkbook::CheckbookRefundRequest::try_from(&connector_router_data)?;
+        Ok(RequestContent::Json(Box::new(connector_req)))
+    }
+
+    fn build_request(
+        &self,
+        req: &RefundsRouterData<Execute>,
+        connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        let request = RequestBuilder::new()
+            .method(Method::Post)
+            .url(&types::RefundExecuteType::get_url(self, req, connectors)?)
+            .attach_default_headers()
+            .headers(types::RefundExecuteType::get_headers(
+                self, req, connectors,
+            )?)
+            .set_body(types::RefundExecuteType::get_request_body(
+                self, req, connectors,
+            )?)
+            .build();
+        Ok(Some(request))
+    }
+
+    fn handle_response(
+        &self,
+        data: &RefundsRouterData<Execute>,
+        event_builder: Option<&mut ConnectorEvent>,
+        res: Response,
+    ) -> CustomResult<RefundsRouterData<Execute>, errors::ConnectorError> {
+        let response: checkbook::RefundResponse = res
+            .response
+            .parse_struct("checkbook RefundResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+        RouterData::try_from(ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res, event_builder)
+    }
+}
+
+impl ConnectorIntegration<RSync, RefundsData, RefundsResponseData> for Checkbook {
+    fn get_headers(
+        &self,
+        req: &RefundSyncRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
+        self.build_headers(req, connectors)
+    }
+
+    fn get_content_type(&self) -> &'static str {
+        self.common_get_content_type()
+    }
+
+    fn get_url(
+        &self,
+        _req: &RefundSyncRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<String, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotImplemented("get_url method".to_string()).into())
+    }
+
+    fn build_request(
+        &self,
+        req: &RefundSyncRouterData,
+        connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        Ok(Some(
+            RequestBuilder::new()
+                .method(Method::Get)
+                .url(&types::RefundSyncType::get_url(self, req, connectors)?)
+                .attach_default_headers()
+                .headers(types::RefundSyncType::get_headers(self, req, connectors)?)
+                .set_body(types::RefundSyncType::get_request_body(
+                    self, req, connectors,
+                )?)
+                .build(),
+        ))
+    }
+
+    fn handle_response(
+        &self,
+        data: &RefundSyncRouterData,
+        event_builder: Option<&mut ConnectorEvent>,
+        res: Response,
+    ) -> CustomResult<RefundSyncRouterData, errors::ConnectorError> {
+        let response: checkbook::RefundResponse = res
+            .response
+            .parse_struct("checkbook RefundSyncResponse")
+            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;
+        event_builder.map(|i| i.set_response_body(&response));
+        router_env::logger::info!(connector_response=?response);
+        RouterData::try_from(ResponseRouterData {
+            response,
+            data: data.clone(),
+            http_code: res.status_code,
+        })
+    }
+
+    fn get_error_response(
+        &self,
+        res: Response,
+        event_builder: Option<&mut ConnectorEvent>,
+    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
+        self.build_error_response(res, event_builder)
+    }
+}
+
+#[async_trait::async_trait]
+impl webhooks::IncomingWebhook for Checkbook {
+    fn get_webhook_object_reference_id(
+        &self,
+        _request: &webhooks::IncomingWebhookRequestDetails<'_>,
+    ) -> CustomResult<api_models::webhooks::ObjectReferenceId, errors::ConnectorError> {
+        Err(report!(errors::ConnectorError::WebhooksNotImplemented))
+    }
+
+    fn get_webhook_event_type(
+        &self,
+        _request: &webhooks::IncomingWebhookRequestDetails<'_>,
+    ) -> CustomResult<api_models::webhooks::IncomingWebhookEvent, errors::ConnectorError> {
+        Err(report!(errors::ConnectorError::WebhooksNotImplemented))
+    }
+
+    fn get_webhook_resource_object(
+        &self,
+        _request: &webhooks::IncomingWebhookRequestDetails<'_>,
+    ) -> CustomResult<Box<dyn masking::ErasedMaskSerialize>, errors::ConnectorError> {
+        Err(report!(errors::ConnectorError::WebhooksNotImplemented))
+    }
+}
+
+impl ConnectorSpecifications for Checkbook {}
diff --git a/crates/hyperswitch_connectors/src/connectors/checkbook/transformers.rs b/crates/hyperswitch_connectors/src/connectors/checkbook/transformers.rs
new file mode 100644
index 00000000000..d9f009f78fe
--- /dev/null
+++ b/crates/hyperswitch_connectors/src/connectors/checkbook/transformers.rs
@@ -0,0 +1,228 @@
+use common_enums::enums;
+use common_utils::types::FloatMajorUnit;
+use hyperswitch_domain_models::{
+    payment_method_data::PaymentMethodData,
+    router_data::{ConnectorAuthType, RouterData},
+    router_flow_types::refunds::{Execute, RSync},
+    router_request_types::ResponseId,
+    router_response_types::{PaymentsResponseData, RefundsResponseData},
+    types::{PaymentsAuthorizeRouterData, RefundsRouterData},
+};
+use hyperswitch_interfaces::errors;
+use masking::Secret;
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    types::{RefundsResponseRouterData, ResponseRouterData},
+    utils::PaymentsAuthorizeRequestData,
+};
+
+//TODO: Fill the struct with respective fields
+pub struct CheckbookRouterData<T> {
+    pub amount: FloatMajorUnit, // The type of amount that a connector accepts, for example, String, i64, f64, etc.
+    pub router_data: T,
+}
+
+impl<T> From<(FloatMajorUnit, T)> for CheckbookRouterData<T> {
+    fn from((amount, item): (FloatMajorUnit, T)) -> Self {
+        //Todo :  use utils to convert the amount to the type of amount that a connector accepts
+        Self {
+            amount,
+            router_data: item,
+        }
+    }
+}
+
+//TODO: Fill the struct with respective fields
+#[derive(Default, Debug, Serialize, PartialEq)]
+pub struct CheckbookPaymentsRequest {
+    amount: FloatMajorUnit,
+    card: CheckbookCard,
+}
+
+#[derive(Default, Debug, Serialize, Eq, PartialEq)]
+pub struct CheckbookCard {
+    number: cards::CardNumber,
+    expiry_month: Secret<String>,
+    expiry_year: Secret<String>,
+    cvc: Secret<String>,
+    complete: bool,
+}
+
+impl TryFrom<&CheckbookRouterData<&PaymentsAuthorizeRouterData>> for CheckbookPaymentsRequest {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        item: &CheckbookRouterData<&PaymentsAuthorizeRouterData>,
+    ) -> Result<Self, Self::Error> {
+        match item.router_data.request.payment_method_data.clone() {
+            PaymentMethodData::Card(req_card) => {
+                let card = CheckbookCard {
+                    number: req_card.card_number,
+                    expiry_month: req_card.card_exp_month,
+                    expiry_year: req_card.card_exp_year,
+                    cvc: req_card.card_cvc,
+                    complete: item.router_data.request.is_auto_capture()?,
+                };
+                Ok(Self {
+                    amount: item.amount,
+                    card,
+                })
+            }
+            _ => Err(errors::ConnectorError::NotImplemented("Payment method".to_string()).into()),
+        }
+    }
+}
+
+//TODO: Fill the struct with respective fields
+// Auth Struct
+pub struct CheckbookAuthType {
+    pub(super) api_key: Secret<String>,
+}
+
+impl TryFrom<&ConnectorAuthType> for CheckbookAuthType {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(auth_type: &ConnectorAuthType) -> Result<Self, Self::Error> {
+        match auth_type {
+            ConnectorAuthType::HeaderKey { api_key } => Ok(Self {
+                api_key: api_key.to_owned(),
+            }),
+            _ => Err(errors::ConnectorError::FailedToObtainAuthType.into()),
+        }
+    }
+}
+// PaymentsResponse
+//TODO: Append the remaining status flags
+#[derive(Debug, Clone, Default, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum CheckbookPaymentStatus {
+    Succeeded,
+    Failed,
+    #[default]
+    Processing,
+}
+
+impl From<CheckbookPaymentStatus> for common_enums::AttemptStatus {
+    fn from(item: CheckbookPaymentStatus) -> Self {
+        match item {
+            CheckbookPaymentStatus::Succeeded => Self::Charged,
+            CheckbookPaymentStatus::Failed => Self::Failure,
+            CheckbookPaymentStatus::Processing => Self::Authorizing,
+        }
+    }
+}
+
+//TODO: Fill the struct with respective fields
+#[derive(Default, Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct CheckbookPaymentsResponse {
+    status: CheckbookPaymentStatus,
+    id: String,
+}
+
+impl<F, T> TryFrom<ResponseRouterData<F, CheckbookPaymentsResponse, T, PaymentsResponseData>>
+    for RouterData<F, T, PaymentsResponseData>
+{
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        item: ResponseRouterData<F, CheckbookPaymentsResponse, T, PaymentsResponseData>,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            status: common_enums::AttemptStatus::from(item.response.status),
+            response: Ok(PaymentsResponseData::TransactionResponse {
+                resource_id: ResponseId::ConnectorTransactionId(item.response.id),
+                redirection_data: Box::new(None),
+                mandate_reference: Box::new(None),
+                connector_metadata: None,
+                network_txn_id: None,
+                connector_response_reference_id: None,
+                incremental_authorization_allowed: None,
+                charges: None,
+            }),
+            ..item.data
+        })
+    }
+}
+
+//TODO: Fill the struct with respective fields
+// REFUND :
+// Type definition for RefundRequest
+#[derive(Default, Debug, Serialize)]
+pub struct CheckbookRefundRequest {
+    pub amount: FloatMajorUnit,
+}
+
+impl<F> TryFrom<&CheckbookRouterData<&RefundsRouterData<F>>> for CheckbookRefundRequest {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(item: &CheckbookRouterData<&RefundsRouterData<F>>) -> Result<Self, Self::Error> {
+        Ok(Self {
+            amount: item.amount.to_owned(),
+        })
+    }
+}
+
+// Type definition for Refund Response
+
+#[allow(dead_code)]
+#[derive(Debug, Serialize, Default, Deserialize, Clone)]
+pub enum RefundStatus {
+    Succeeded,
+    Failed,
+    #[default]
+    Processing,
+}
+
+impl From<RefundStatus> for enums::RefundStatus {
+    fn from(item: RefundStatus) -> Self {
+        match item {
+            RefundStatus::Succeeded => Self::Success,
+            RefundStatus::Failed => Self::Failure,
+            RefundStatus::Processing => Self::Pending,
+            //TODO: Review mapping
+        }
+    }
+}
+
+//TODO: Fill the struct with respective fields
+#[derive(Default, Debug, Clone, Serialize, Deserialize)]
+pub struct RefundResponse {
+    id: String,
+    status: RefundStatus,
+}
+
+impl TryFrom<RefundsResponseRouterData<Execute, RefundResponse>> for RefundsRouterData<Execute> {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        item: RefundsResponseRouterData<Execute, RefundResponse>,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            response: Ok(RefundsResponseData {
+                connector_refund_id: item.response.id.to_string(),
+                refund_status: enums::RefundStatus::from(item.response.status),
+            }),
+            ..item.data
+        })
+    }
+}
+
+impl TryFrom<RefundsResponseRouterData<RSync, RefundResponse>> for RefundsRouterData<RSync> {
+    type Error = error_stack::Report<errors::ConnectorError>;
+    fn try_from(
+        item: RefundsResponseRouterData<RSync, RefundResponse>,
+    ) -> Result<Self, Self::Error> {
+        Ok(Self {
+            response: Ok(RefundsResponseData {
+                connector_refund_id: item.response.id.to_string(),
+                refund_status: enums::RefundStatus::from(item.response.status),
+            }),
+            ..item.data
+        })
+    }
+}
+
+//TODO: Fill the struct with respective fields
+#[derive(Default, Debug, Serialize, Deserialize, PartialEq)]
+pub struct CheckbookErrorResponse {
+    pub status_code: u16,
+    pub code: String,
+    pub message: String,
+    pub reason: Option<String>,
+}
diff --git a/crates/hyperswitch_connectors/src/default_implementations.rs b/crates/hyperswitch_connectors/src/default_implementations.rs
index 6717a25d2ac..54c5d81edd9 100644
--- a/crates/hyperswitch_connectors/src/default_implementations.rs
+++ b/crates/hyperswitch_connectors/src/default_implementations.rs
@@ -160,6 +160,7 @@ default_imp_for_authorize_session_token!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -282,6 +283,7 @@ default_imp_for_calculate_tax!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -405,6 +407,7 @@ default_imp_for_session_update!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -528,6 +531,7 @@ default_imp_for_post_session_tokens!(
     connectors::Billwerk,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -650,6 +654,7 @@ default_imp_for_create_order!(
     connectors::Billwerk,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -773,6 +778,7 @@ default_imp_for_update_metadata!(
     connectors::Billwerk,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -894,6 +900,7 @@ default_imp_for_complete_authorize!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1002,6 +1009,7 @@ default_imp_for_incremental_authorization!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1125,6 +1133,7 @@ default_imp_for_create_customer!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1242,6 +1251,7 @@ default_imp_for_connector_redirect_response!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -1348,6 +1358,7 @@ default_imp_for_pre_processing_steps!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1462,6 +1473,7 @@ default_imp_for_post_processing_steps!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1586,6 +1598,7 @@ default_imp_for_approve!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1711,6 +1724,7 @@ default_imp_for_reject!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1836,6 +1850,7 @@ default_imp_for_webhook_source_verification!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1960,6 +1975,7 @@ default_imp_for_accept_dispute!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -2083,6 +2099,7 @@ default_imp_for_submit_evidence!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -2205,6 +2222,7 @@ default_imp_for_defend_dispute!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -2337,6 +2355,7 @@ default_imp_for_file_upload!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -2451,6 +2470,7 @@ default_imp_for_payouts!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Cryptopay,
     connectors::Datatrans,
@@ -2569,6 +2589,7 @@ default_imp_for_payouts_create!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2691,6 +2712,7 @@ default_imp_for_payouts_retrieve!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2815,6 +2837,7 @@ default_imp_for_payouts_eligibility!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2937,6 +2960,7 @@ default_imp_for_payouts_fulfill!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3056,6 +3080,7 @@ default_imp_for_payouts_cancel!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3179,6 +3204,7 @@ default_imp_for_payouts_quote!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3303,6 +3329,7 @@ default_imp_for_payouts_recipient!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3426,6 +3453,7 @@ default_imp_for_payouts_recipient_account!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3551,6 +3579,7 @@ default_imp_for_frm_sale!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3676,6 +3705,7 @@ default_imp_for_frm_checkout!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3801,6 +3831,7 @@ default_imp_for_frm_transaction!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3926,6 +3957,7 @@ default_imp_for_frm_fulfillment!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4051,6 +4083,7 @@ default_imp_for_frm_record_return!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4172,6 +4205,7 @@ default_imp_for_revoking_mandates!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4293,6 +4327,7 @@ default_imp_for_uas_pre_authentication!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4415,6 +4450,7 @@ default_imp_for_uas_post_authentication!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4538,6 +4574,7 @@ default_imp_for_uas_authentication_confirmation!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4653,6 +4690,7 @@ default_imp_for_connector_request_id!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4770,6 +4808,7 @@ default_imp_for_fraud_check!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -4917,6 +4956,7 @@ default_imp_for_connector_authentication!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5037,6 +5077,7 @@ default_imp_for_uas_authentication!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5151,8 +5192,9 @@ default_imp_for_revenue_recovery!(
     connectors::Braintree,
     connectors::Boku,
     connectors::Cashtocode,
-    connectors::Checkout,
     connectors::Chargebee,
+    connectors::Checkbook,
+    connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
     connectors::Cryptopay,
@@ -5278,6 +5320,7 @@ default_imp_for_billing_connector_payment_sync!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5402,6 +5445,7 @@ default_imp_for_revenue_recovery_record_back!(
     connectors::Braintree,
     connectors::Boku,
     connectors::Cashtocode,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5526,6 +5570,7 @@ default_imp_for_billing_connector_invoice_sync!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5644,6 +5689,7 @@ default_imp_for_external_vault!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5768,6 +5814,7 @@ default_imp_for_external_vault_insert!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -5892,6 +5939,7 @@ default_imp_for_external_vault_retrieve!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -6016,6 +6064,7 @@ default_imp_for_external_vault_delete!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -6140,6 +6189,7 @@ default_imp_for_external_vault_create!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
diff --git a/crates/hyperswitch_connectors/src/default_implementations_v2.rs b/crates/hyperswitch_connectors/src/default_implementations_v2.rs
index 0121aa1d951..27c13c9d6be 100644
--- a/crates/hyperswitch_connectors/src/default_implementations_v2.rs
+++ b/crates/hyperswitch_connectors/src/default_implementations_v2.rs
@@ -265,6 +265,7 @@ default_imp_for_new_connector_integration_payment!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -390,6 +391,7 @@ default_imp_for_new_connector_integration_refund!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -510,6 +512,7 @@ default_imp_for_new_connector_integration_connector_access_token!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -636,6 +639,7 @@ default_imp_for_new_connector_integration_accept_dispute!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -760,6 +764,7 @@ default_imp_for_new_connector_integration_submit_evidence!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -884,6 +889,7 @@ default_imp_for_new_connector_integration_defend_dispute!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1019,6 +1025,7 @@ default_imp_for_new_connector_integration_file_upload!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1146,6 +1153,7 @@ default_imp_for_new_connector_integration_payouts_create!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1273,6 +1281,7 @@ default_imp_for_new_connector_integration_payouts_eligibility!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1400,6 +1409,7 @@ default_imp_for_new_connector_integration_payouts_fulfill!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1527,6 +1537,7 @@ default_imp_for_new_connector_integration_payouts_cancel!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1654,6 +1665,7 @@ default_imp_for_new_connector_integration_payouts_quote!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1781,6 +1793,7 @@ default_imp_for_new_connector_integration_payouts_recipient!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -1908,6 +1921,7 @@ default_imp_for_new_connector_integration_payouts_sync!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2035,6 +2049,7 @@ default_imp_for_new_connector_integration_payouts_recipient_account!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2160,6 +2175,7 @@ default_imp_for_new_connector_integration_webhook_source_verification!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2287,6 +2303,7 @@ default_imp_for_new_connector_integration_frm_sale!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2414,6 +2431,7 @@ default_imp_for_new_connector_integration_frm_checkout!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2541,6 +2559,7 @@ default_imp_for_new_connector_integration_frm_transaction!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2668,6 +2687,7 @@ default_imp_for_new_connector_integration_frm_fulfillment!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2795,6 +2815,7 @@ default_imp_for_new_connector_integration_frm_record_return!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -2919,6 +2940,7 @@ default_imp_for_new_connector_integration_revoking_mandates!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
@@ -3030,6 +3052,7 @@ default_imp_for_new_connector_integration_frm!(
     connectors::Bluesnap,
     connectors::Boku,
     connectors::Cashtocode,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Cryptopay,
     connectors::CtpMastercard,
@@ -3154,6 +3177,7 @@ default_imp_for_new_connector_integration_connector_authentication!(
     connectors::Bluesnap,
     connectors::Boku,
     connectors::Cashtocode,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Cryptopay,
     connectors::CtpMastercard,
@@ -3267,6 +3291,7 @@ default_imp_for_new_connector_integration_revenue_recovery!(
     connectors::Bluesnap,
     connectors::Boku,
     connectors::Cashtocode,
+    connectors::Checkbook,
     connectors::Coinbase,
     connectors::Cryptopay,
     connectors::CtpMastercard,
@@ -3397,6 +3422,7 @@ default_imp_for_new_connector_integration_external_vault!(
     connectors::Boku,
     connectors::Cashtocode,
     connectors::Chargebee,
+    connectors::Checkbook,
     connectors::Checkout,
     connectors::Coinbase,
     connectors::Coingate,
diff --git a/crates/hyperswitch_domain_models/src/configs.rs b/crates/hyperswitch_domain_models/src/configs.rs
index ab84cf26aa4..f15ea290f56 100644
--- a/crates/hyperswitch_domain_models/src/configs.rs
+++ b/crates/hyperswitch_domain_models/src/configs.rs
@@ -30,6 +30,7 @@ pub struct Connectors {
     pub braintree: ConnectorParams,
     pub cashtocode: ConnectorParams,
     pub chargebee: ConnectorParams,
+    pub checkbook: ConnectorParams,
     pub checkout: ConnectorParams,
     pub coinbase: ConnectorParams,
     pub coingate: ConnectorParams,
diff --git a/crates/router/src/connector.rs b/crates/router/src/connector.rs
index de9eb4f3923..af2d9a52352 100644
--- a/crates/router/src/connector.rs
+++ b/crates/router/src/connector.rs
@@ -9,30 +9,31 @@ pub use hyperswitch_connectors::connectors::{
     bamboraapac::Bamboraapac, bankofamerica, bankofamerica::Bankofamerica, barclaycard,
     barclaycard::Barclaycard, billwerk, billwerk::Billwerk, bitpay, bitpay::Bitpay, bluesnap,
     bluesnap::Bluesnap, boku, boku::Boku, braintree, braintree::Braintree, cashtocode,
-    cashtocode::Cashtocode, chargebee, chargebee::Chargebee, checkout, checkout::Checkout,
-    coinbase, coinbase::Coinbase, coingate, coingate::Coingate, cryptopay, cryptopay::Cryptopay,
-    ctp_mastercard, ctp_mastercard::CtpMastercard, cybersource, cybersource::Cybersource,
-    datatrans, datatrans::Datatrans, deutschebank, deutschebank::Deutschebank, digitalvirgo,
-    digitalvirgo::Digitalvirgo, dlocal, dlocal::Dlocal, dwolla, dwolla::Dwolla, ebanx,
-    ebanx::Ebanx, elavon, elavon::Elavon, facilitapay, facilitapay::Facilitapay, fiserv,
-    fiserv::Fiserv, fiservemea, fiservemea::Fiservemea, fiuu, fiuu::Fiuu, forte, forte::Forte,
-    getnet, getnet::Getnet, globalpay, globalpay::Globalpay, globepay, globepay::Globepay,
-    gocardless, gocardless::Gocardless, gpayments, gpayments::Gpayments, helcim, helcim::Helcim,
-    hipay, hipay::Hipay, hyperswitch_vault, hyperswitch_vault::HyperswitchVault, iatapay,
-    iatapay::Iatapay, inespay, inespay::Inespay, itaubank, itaubank::Itaubank, jpmorgan,
-    jpmorgan::Jpmorgan, juspaythreedsserver, juspaythreedsserver::Juspaythreedsserver, klarna,
-    klarna::Klarna, mifinity, mifinity::Mifinity, mollie, mollie::Mollie, moneris,
-    moneris::Moneris, multisafepay, multisafepay::Multisafepay, netcetera, netcetera::Netcetera,
-    nexinets, nexinets::Nexinets, nexixpay, nexixpay::Nexixpay, nmi, nmi::Nmi, nomupay,
-    nomupay::Nomupay, noon, noon::Noon, nordea, nordea::Nordea, novalnet, novalnet::Novalnet,
-    nuvei, nuvei::Nuvei, opayo, opayo::Opayo, opennode, opennode::Opennode, paybox, paybox::Paybox,
-    payeezy, payeezy::Payeezy, payme, payme::Payme, payone, payone::Payone, paypal, paypal::Paypal,
-    paystack, paystack::Paystack, payu, payu::Payu, placetopay, placetopay::Placetopay, plaid,
-    plaid::Plaid, powertranz, powertranz::Powertranz, prophetpay, prophetpay::Prophetpay, rapyd,
-    rapyd::Rapyd, razorpay, razorpay::Razorpay, recurly, recurly::Recurly, redsys, redsys::Redsys,
-    riskified, riskified::Riskified, santander, santander::Santander, shift4, shift4::Shift4,
-    signifyd, signifyd::Signifyd, square, square::Square, stax, stax::Stax, stripe, stripe::Stripe,
-    stripebilling, stripebilling::Stripebilling, taxjar, taxjar::Taxjar, threedsecureio,
+    cashtocode::Cashtocode, chargebee, chargebee::Chargebee, checkbook, checkbook::Checkbook,
+    checkout, checkout::Checkout, coinbase, coinbase::Coinbase, coingate, coingate::Coingate,
+    cryptopay, cryptopay::Cryptopay, ctp_mastercard, ctp_mastercard::CtpMastercard, cybersource,
+    cybersource::Cybersource, datatrans, datatrans::Datatrans, deutschebank,
+    deutschebank::Deutschebank, digitalvirgo, digitalvirgo::Digitalvirgo, dlocal, dlocal::Dlocal,
+    dwolla, dwolla::Dwolla, ebanx, ebanx::Ebanx, elavon, elavon::Elavon, facilitapay,
+    facilitapay::Facilitapay, fiserv, fiserv::Fiserv, fiservemea, fiservemea::Fiservemea, fiuu,
+    fiuu::Fiuu, forte, forte::Forte, getnet, getnet::Getnet, globalpay, globalpay::Globalpay,
+    globepay, globepay::Globepay, gocardless, gocardless::Gocardless, gpayments,
+    gpayments::Gpayments, helcim, helcim::Helcim, hipay, hipay::Hipay, hyperswitch_vault,
+    hyperswitch_vault::HyperswitchVault, iatapay, iatapay::Iatapay, inespay, inespay::Inespay,
+    itaubank, itaubank::Itaubank, jpmorgan, jpmorgan::Jpmorgan, juspaythreedsserver,
+    juspaythreedsserver::Juspaythreedsserver, klarna, klarna::Klarna, mifinity, mifinity::Mifinity,
+    mollie, mollie::Mollie, moneris, moneris::Moneris, multisafepay, multisafepay::Multisafepay,
+    netcetera, netcetera::Netcetera, nexinets, nexinets::Nexinets, nexixpay, nexixpay::Nexixpay,
+    nmi, nmi::Nmi, nomupay, nomupay::Nomupay, noon, noon::Noon, nordea, nordea::Nordea, novalnet,
+    novalnet::Novalnet, nuvei, nuvei::Nuvei, opayo, opayo::Opayo, opennode, opennode::Opennode,
+    paybox, paybox::Paybox, payeezy, payeezy::Payeezy, payme, payme::Payme, payone, payone::Payone,
+    paypal, paypal::Paypal, paystack, paystack::Paystack, payu, payu::Payu, placetopay,
+    placetopay::Placetopay, plaid, plaid::Plaid, powertranz, powertranz::Powertranz, prophetpay,
+    prophetpay::Prophetpay, rapyd, rapyd::Rapyd, razorpay, razorpay::Razorpay, recurly,
+    recurly::Recurly, redsys, redsys::Redsys, riskified, riskified::Riskified, santander,
+    santander::Santander, shift4, shift4::Shift4, signifyd, signifyd::Signifyd, square,
+    square::Square, stax, stax::Stax, stripe, stripe::Stripe, stripebilling,
+    stripebilling::Stripebilling, taxjar, taxjar::Taxjar, threedsecureio,
     threedsecureio::Threedsecureio, thunes, thunes::Thunes, tokenio, tokenio::Tokenio, trustpay,
     trustpay::Trustpay, tsys, tsys::Tsys, unified_authentication_service,
     unified_authentication_service::UnifiedAuthenticationService, vgs, vgs::Vgs, volt, volt::Volt,
diff --git a/crates/router/src/core/admin.rs b/crates/router/src/core/admin.rs
index eeb4557daf3..6763bd029b2 100644
--- a/crates/router/src/core/admin.rs
+++ b/crates/router/src/core/admin.rs
@@ -1456,6 +1456,10 @@ impl ConnectorAuthTypeAndMetadataValidation<'_> {
                 chargebee::transformers::ChargebeeMetadata::try_from(self.connector_meta_data)?;
                 Ok(())
             }
+            // api_enums::Connector::Checkbook => {
+            //     checkbook::transformers::CheckbookAuthType::try_from(self.auth_type)?;
+            //     Ok(())
+            // },
             api_enums::Connector::Checkout => {
                 checkout::transformers::CheckoutAuthType::try_from(self.auth_type)?;
                 Ok(())
diff --git a/crates/router/src/types/api.rs b/crates/router/src/types/api.rs
index e189a0f1a43..f40520a42e7 100644
--- a/crates/router/src/types/api.rs
+++ b/crates/router/src/types/api.rs
@@ -378,6 +378,9 @@ impl ConnectorData {
                 enums::Connector::Chargebee => {
                     Ok(ConnectorEnum::Old(Box::new(connector::Chargebee::new())))
                 }
+                // enums::Connector::Checkbook => {
+                //     Ok(ConnectorEnum::Old(Box::new(connector::Checkbook)))
+                // }
                 enums::Connector::Checkout => {
                     Ok(ConnectorEnum::Old(Box::new(connector::Checkout::new())))
                 }
diff --git a/crates/router/src/types/transformers.rs b/crates/router/src/types/transformers.rs
index ad3d4de7f94..82ca2f7ae67 100644
--- a/crates/router/src/types/transformers.rs
+++ b/crates/router/src/types/transformers.rs
@@ -224,6 +224,7 @@ impl ForeignTryFrom<api_enums::Connector> for common_enums::RoutableConnectors {
             api_enums::Connector::Braintree => Self::Braintree,
             api_enums::Connector::Cashtocode => Self::Cashtocode,
             api_enums::Connector::Chargebee => Self::Chargebee,
+            // api_enums::Connector::Checkbook => Self::Checkbook,
             api_enums::Connector::Checkout => Self::Checkout,
             api_enums::Connector::Coinbase => Self::Coinbase,
             api_enums::Connector::Coingate => Self::Coingate,
diff --git a/crates/router/tests/connectors/checkbook.rs b/crates/router/tests/connectors/checkbook.rs
new file mode 100644
index 00000000000..b6b4252f852
--- /dev/null
+++ b/crates/router/tests/connectors/checkbook.rs
@@ -0,0 +1,420 @@
+use masking::Secret;
+use router::types::{self, api, domain, storage::enums};
+use test_utils::connector_auth;
+
+use crate::utils::{self, ConnectorActions};
+
+#[derive(Clone, Copy)]
+struct CheckbookTest;
+impl ConnectorActions for CheckbookTest {}
+impl utils::Connector for CheckbookTest {
+    fn get_data(&self) -> api::ConnectorData {
+        use router::connector::Checkbook;
+        utils::construct_connector_data_old(
+            Box::new(Checkbook::new()),
+            types::Connector::DummyConnector1,
+            api::GetToken::Connector,
+            None,
+        )
+    }
+
+    fn get_auth_token(&self) -> types::ConnectorAuthType {
+        utils::to_connector_auth_type(
+            connector_auth::ConnectorAuthentication::new()
+                .checkbook
+                .expect("Missing connector authentication configuration")
+                .into(),
+        )
+    }
+
+    fn get_name(&self) -> String {
+        "checkbook".to_string()
+    }
+}
+
+static CONNECTOR: CheckbookTest = CheckbookTest {};
+
+fn get_default_payment_info() -> Option<utils::PaymentInfo> {
+    None
+}
+
+fn payment_method_details() -> Option<types::PaymentsAuthorizeData> {
+    None
+}
+
+// Cards Positive Tests
+// Creates a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_only_authorize_payment() {
+    let response = CONNECTOR
+        .authorize_payment(payment_method_details(), get_default_payment_info())
+        .await
+        .expect("Authorize payment response");
+    assert_eq!(response.status, enums::AttemptStatus::Authorized);
+}
+
+// Captures a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_capture_authorized_payment() {
+    let response = CONNECTOR
+        .authorize_and_capture_payment(payment_method_details(), None, get_default_payment_info())
+        .await
+        .expect("Capture payment response");
+    assert_eq!(response.status, enums::AttemptStatus::Charged);
+}
+
+// Partially captures a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_partially_capture_authorized_payment() {
+    let response = CONNECTOR
+        .authorize_and_capture_payment(
+            payment_method_details(),
+            Some(types::PaymentsCaptureData {
+                amount_to_capture: 50,
+                ..utils::PaymentCaptureType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .expect("Capture payment response");
+    assert_eq!(response.status, enums::AttemptStatus::Charged);
+}
+
+// Synchronizes a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_sync_authorized_payment() {
+    let authorize_response = CONNECTOR
+        .authorize_payment(payment_method_details(), get_default_payment_info())
+        .await
+        .expect("Authorize payment response");
+    let txn_id = utils::get_connector_transaction_id(authorize_response.response);
+    let response = CONNECTOR
+        .psync_retry_till_status_matches(
+            enums::AttemptStatus::Authorized,
+            Some(types::PaymentsSyncData {
+                connector_transaction_id: types::ResponseId::ConnectorTransactionId(
+                    txn_id.unwrap(),
+                ),
+                ..Default::default()
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .expect("PSync response");
+    assert_eq!(response.status, enums::AttemptStatus::Authorized,);
+}
+
+// Voids a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_void_authorized_payment() {
+    let response = CONNECTOR
+        .authorize_and_void_payment(
+            payment_method_details(),
+            Some(types::PaymentsCancelData {
+                connector_transaction_id: String::from(""),
+                cancellation_reason: Some("requested_by_customer".to_string()),
+                ..Default::default()
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .expect("Void payment response");
+    assert_eq!(response.status, enums::AttemptStatus::Voided);
+}
+
+// Refunds a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_refund_manually_captured_payment() {
+    let response = CONNECTOR
+        .capture_payment_and_refund(
+            payment_method_details(),
+            None,
+            None,
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Partially refunds a payment using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_partially_refund_manually_captured_payment() {
+    let response = CONNECTOR
+        .capture_payment_and_refund(
+            payment_method_details(),
+            None,
+            Some(types::RefundsData {
+                refund_amount: 50,
+                ..utils::PaymentRefundType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Synchronizes a refund using the manual capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_sync_manually_captured_refund() {
+    let refund_response = CONNECTOR
+        .capture_payment_and_refund(
+            payment_method_details(),
+            None,
+            None,
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    let response = CONNECTOR
+        .rsync_retry_till_status_matches(
+            enums::RefundStatus::Success,
+            refund_response.response.unwrap().connector_refund_id,
+            None,
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Creates a payment using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_make_payment() {
+    let authorize_response = CONNECTOR
+        .make_payment(payment_method_details(), get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(authorize_response.status, enums::AttemptStatus::Charged);
+}
+
+// Synchronizes a payment using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_sync_auto_captured_payment() {
+    let authorize_response = CONNECTOR
+        .make_payment(payment_method_details(), get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(authorize_response.status, enums::AttemptStatus::Charged);
+    let txn_id = utils::get_connector_transaction_id(authorize_response.response);
+    assert_ne!(txn_id, None, "Empty connector transaction id");
+    let response = CONNECTOR
+        .psync_retry_till_status_matches(
+            enums::AttemptStatus::Charged,
+            Some(types::PaymentsSyncData {
+                connector_transaction_id: types::ResponseId::ConnectorTransactionId(
+                    txn_id.unwrap(),
+                ),
+                capture_method: Some(enums::CaptureMethod::Automatic),
+                ..Default::default()
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(response.status, enums::AttemptStatus::Charged,);
+}
+
+// Refunds a payment using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_refund_auto_captured_payment() {
+    let response = CONNECTOR
+        .make_payment_and_refund(payment_method_details(), None, get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Partially refunds a payment using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_partially_refund_succeeded_payment() {
+    let refund_response = CONNECTOR
+        .make_payment_and_refund(
+            payment_method_details(),
+            Some(types::RefundsData {
+                refund_amount: 50,
+                ..utils::PaymentRefundType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        refund_response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Creates multiple refunds against a payment using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_refund_succeeded_payment_multiple_times() {
+    CONNECTOR
+        .make_payment_and_multiple_refund(
+            payment_method_details(),
+            Some(types::RefundsData {
+                refund_amount: 50,
+                ..utils::PaymentRefundType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await;
+}
+
+// Synchronizes a refund using the automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_sync_refund() {
+    let refund_response = CONNECTOR
+        .make_payment_and_refund(payment_method_details(), None, get_default_payment_info())
+        .await
+        .unwrap();
+    let response = CONNECTOR
+        .rsync_retry_till_status_matches(
+            enums::RefundStatus::Success,
+            refund_response.response.unwrap().connector_refund_id,
+            None,
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap().refund_status,
+        enums::RefundStatus::Success,
+    );
+}
+
+// Cards Negative scenarios
+// Creates a payment with incorrect CVC.
+#[actix_web::test]
+async fn should_fail_payment_for_incorrect_cvc() {
+    let response = CONNECTOR
+        .make_payment(
+            Some(types::PaymentsAuthorizeData {
+                payment_method_data: domain::PaymentMethodData::Card(domain::Card {
+                    card_cvc: Secret::new("12345".to_string()),
+                    ..utils::CCardType::default().0
+                }),
+                ..utils::PaymentAuthorizeType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap_err().message,
+        "Your card's security code is invalid.".to_string(),
+    );
+}
+
+// Creates a payment with incorrect expiry month.
+#[actix_web::test]
+async fn should_fail_payment_for_invalid_exp_month() {
+    let response = CONNECTOR
+        .make_payment(
+            Some(types::PaymentsAuthorizeData {
+                payment_method_data: domain::PaymentMethodData::Card(domain::Card {
+                    card_exp_month: Secret::new("20".to_string()),
+                    ..utils::CCardType::default().0
+                }),
+                ..utils::PaymentAuthorizeType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap_err().message,
+        "Your card's expiration month is invalid.".to_string(),
+    );
+}
+
+// Creates a payment with incorrect expiry year.
+#[actix_web::test]
+async fn should_fail_payment_for_incorrect_expiry_year() {
+    let response = CONNECTOR
+        .make_payment(
+            Some(types::PaymentsAuthorizeData {
+                payment_method_data: domain::PaymentMethodData::Card(domain::Card {
+                    card_exp_year: Secret::new("2000".to_string()),
+                    ..utils::CCardType::default().0
+                }),
+                ..utils::PaymentAuthorizeType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap_err().message,
+        "Your card's expiration year is invalid.".to_string(),
+    );
+}
+
+// Voids a payment using automatic capture flow (Non 3DS).
+#[actix_web::test]
+async fn should_fail_void_payment_for_auto_capture() {
+    let authorize_response = CONNECTOR
+        .make_payment(payment_method_details(), get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(authorize_response.status, enums::AttemptStatus::Charged);
+    let txn_id = utils::get_connector_transaction_id(authorize_response.response);
+    assert_ne!(txn_id, None, "Empty connector transaction id");
+    let void_response = CONNECTOR
+        .void_payment(txn_id.unwrap(), None, get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(
+        void_response.response.unwrap_err().message,
+        "You cannot cancel this PaymentIntent because it has a status of succeeded."
+    );
+}
+
+// Captures a payment using invalid connector payment id.
+#[actix_web::test]
+async fn should_fail_capture_for_invalid_payment() {
+    let capture_response = CONNECTOR
+        .capture_payment("123456789".to_string(), None, get_default_payment_info())
+        .await
+        .unwrap();
+    assert_eq!(
+        capture_response.response.unwrap_err().message,
+        String::from("No such payment_intent: '123456789'")
+    );
+}
+
+// Refunds a payment with refund amount higher than payment amount.
+#[actix_web::test]
+async fn should_fail_for_refund_amount_higher_than_payment_amount() {
+    let response = CONNECTOR
+        .make_payment_and_refund(
+            payment_method_details(),
+            Some(types::RefundsData {
+                refund_amount: 150,
+                ..utils::PaymentRefundType::default().0
+            }),
+            get_default_payment_info(),
+        )
+        .await
+        .unwrap();
+    assert_eq!(
+        response.response.unwrap_err().message,
+        "Refund amount (₹1.50) is greater than charge amount (₹1.00)",
+    );
+}
+
+// Connector dependent test cases goes here
+
+// [#478]: add unit tests for non 3DS, wallets & webhooks in connector tests
diff --git a/crates/router/tests/connectors/main.rs b/crates/router/tests/connectors/main.rs
index fced1b6bff3..8005e84652b 100644
--- a/crates/router/tests/connectors/main.rs
+++ b/crates/router/tests/connectors/main.rs
@@ -24,6 +24,7 @@ mod bluesnap;
 mod boku;
 mod cashtocode;
 mod chargebee;
+mod checkbook;
 mod checkout;
 mod coinbase;
 mod cryptopay;
diff --git a/crates/router/tests/connectors/sample_auth.toml b/crates/router/tests/connectors/sample_auth.toml
index 354959856bf..25c63908448 100644
--- a/crates/router/tests/connectors/sample_auth.toml
+++ b/crates/router/tests/connectors/sample_auth.toml
@@ -341,6 +341,10 @@ api_key = "MyApiKey"
 key1 = "Merchant id"
 api_secret = "Secret key"
 
+[checkbook]
+api_key="Client ID"
+key1 ="Client Secret"
+
 [santander]
 api_key="Client ID"
 key1 ="Client Secret"
diff --git a/crates/test_utils/src/connector_auth.rs b/crates/test_utils/src/connector_auth.rs
index 17d442315c6..c92d4aa8591 100644
--- a/crates/test_utils/src/connector_auth.rs
+++ b/crates/test_utils/src/connector_auth.rs
@@ -30,6 +30,7 @@ pub struct ConnectorAuthentication {
     pub boku: Option<BodyKey>,
     pub cashtocode: Option<BodyKey>,
     pub chargebee: Option<HeaderKey>,
+    pub checkbook: Option<BodyKey>,
     pub checkout: Option<SignatureKey>,
     pub coinbase: Option<HeaderKey>,
     pub coingate: Option<HeaderKey>,
diff --git a/loadtest/config/development.toml b/loadtest/config/development.toml
index 4fade351226..102daf94c6a 100644
--- a/loadtest/config/development.toml
+++ b/loadtest/config/development.toml
@@ -96,6 +96,7 @@ boku.base_url = "https://country-api4-stage.boku.com"
 braintree.base_url = "https://payments.sandbox.braintree-api.com/graphql"
 cashtocode.base_url = "https://cluster05.api-test.cashtocode.com"
 chargebee.base_url = "https://$.chargebee.com/api/"
+checkbook.base_url = "https://api.sandbox.checkbook.io"
 checkout.base_url = "https://api.sandbox.checkout.com/"
 coinbase.base_url = "https://api.commerce.coinbase.com"
 coingate.base_url = "https://api-sandbox.coingate.com"
@@ -223,6 +224,7 @@ cards = [
     "bluesnap",
     "boku",
     "braintree",
+    "checkbook",
     "checkout",
     "coinbase",
     "coingate",
diff --git a/scripts/add_connector.sh b/scripts/add_connector.sh
index a8fbbb15af8..a76e9beacf9 100755
--- a/scripts/add_connector.sh
+++ b/scripts/add_connector.sh
@@ -6,7 +6,7 @@ function find_prev_connector() {
     git checkout $self
     cp $self $self.tmp
     # Add new connector to existing list and sort it
-    connectors=(aci adyen adyenplatform airwallex amazonpay applepay archipel authorizedotnet bambora bamboraapac bankofamerica barclaycard billwerk bitpay bluesnap boku braintree cashtocode chargebee checkout coinbase cryptopay ctp_visa cybersource datatrans deutschebank digitalvirgo dlocal dummyconnector dwolla ebanx elavon facilitapay fiserv fiservemea fiuu forte getnet globalpay globepay gocardless gpayments helcim hipay hyperswitch_vault iatapay inespay itaubank jpmorgan juspaythreedsserver klarna mifinity mollie moneris multisafepay netcetera nexinets nexixpay nomupay noon nordea novalnet nuvei opayo opennode paybox payeezy payme payone paypal paystack payu placetopay plaid powertranz prophetpay rapyd razorpay recurly redsys santander shift4 square stax stripe stripebilling taxjar threedsecureio thunes tokenio trustpay tsys unified_authentication_service vgs volt wellsfargo wellsfargopayout wise worldline worldpay worldpayvantiv worldpayxml xendit zsl "$1")
+    connectors=(aci adyen adyenplatform airwallex amazonpay applepay archipel authorizedotnet bambora bamboraapac bankofamerica barclaycard billwerk bitpay bluesnap boku braintree cashtocode chargebee checkbook checkout coinbase cryptopay ctp_visa cybersource datatrans deutschebank digitalvirgo dlocal dummyconnector dwolla ebanx elavon facilitapay fiserv fiservemea fiuu forte getnet globalpay globepay gocardless gpayments helcim hipay hyperswitch_vault iatapay inespay itaubank jpmorgan juspaythreedsserver klarna mifinity mollie moneris multisafepay netcetera nexinets nexixpay nomupay noon nordea novalnet nuvei opayo opennode paybox payeezy payme payone paypal paystack payu placetopay plaid powertranz prophetpay rapyd razorpay recurly redsys santander shift4 square stax stripe stripebilling taxjar threedsecureio thunes tokenio trustpay tsys unified_authentication_service vgs volt wellsfargo wellsfargopayout wise worldline worldpay worldpayvantiv worldpayxml xendit zsl "$1")
     IFS=$'\n' sorted=($(sort <<<"${connectors[*]}")); unset IFS
     res="$(echo ${sorted[@]})"
     sed -i'' -e "s/^    connectors=.*/    connectors=($res \"\$1\")/" $self.tmp