Workflow: construct a n8n workflow for Code Webhook Create Webhook
Integrations: code, if, noOp, respondToWebhook, set, stickyNote, webhook

{"meta": {"instanceId": "dfb8aefc80b77b230bd90d6a6e5210eb7a28e6e1d2a8b1d27d54942b54eb9e7a", "templateCredsSetupCompleted": true}, "nodes": [{"id": "4f42007b-3813-410f-a608-5af89459b14f", "name": "Check Authorization Header", "type": "n8n-nodes-base.if", "position": [-20, 20], "parameters": {"conditions": {"string": [{"value1": "={{ $('Webhook').item.json.headers.authorization }}", "value2": "=Bearer {{ $json.config.bearerToken }}"}]}}, "typeVersion": 1}, {"id": "86d6157e-593d-4370-a480-1a9417300555", "name": "401 Unauthorized", "type": "n8n-nodes-base.respondToWebhook", "position": [340, 280], "parameters": {"options": {"responseCode": 401}, "respondWith": "json", "responseBody": "{\n  \"code\": 401,\n  \"message\": \"Unauthorized: Missing or invalid authorization token.\",\n  \"hint\": \"Ensure the request includes a valid 'Authorization' header (e.g., 'Bearer YOUR_SECRET_TOKEN').\"\n}"}, "typeVersion": 1}, {"id": "0831093a-adef-41dc-8ac0-2e1998fc22ad", "name": "200 OK", "type": "n8n-nodes-base.respondToWebhook", "position": [1140, 20], "parameters": {"options": {}}, "typeVersion": 1}, {"id": "b4f42651-c7f6-43a3-a695-7d5197b45642", "name": "Configuration", "type": "n8n-nodes-base.set", "position": [-300, 20], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "4c35898d-5a70-41bc-9fb6-9d63bbbee222", "name": "config.bearerToken", "type": "string", "value": "123"}, {"id": "822739a6-15da-48df-8f92-c4b1adce5fef", "name": "config.requiredFields.message", "type": "string", "value": "true"}]}}, "typeVersion": 3.4}, {"id": "f1539109-8585-4cf2-9b9b-f3012544ac6c", "name": "Webhook", "type": "n8n-nodes-base.webhook", "position": [-580, 20], "webhookId": "2c5b9b70-1b08-44b1-a007-dc3d9f7e70db", "parameters": {"path": "secure-webhook", "options": {}, "httpMethod": "POST", "responseMode": "responseNode"}, "typeVersion": 1}, {"id": "bcf1183c-9a3d-41eb-89f7-1666d3a6c5fc", "name": "Has required fields?", "type": "n8n-nodes-base.code", "position": [220, 20], "parameters": {"mode": "runOnceForEachItem", "jsCode": "if(! $json.config.requiredFields) {\n  return { json: { valid: true } };\n}\n\nconst body = $('Webhook').first().json.body;\n\nlet requiredFields = $json.config.requiredFields;\n\nfor (let [key, value] of Object.entries(requiredFields)) {\n  console.log(`${key}: ${value}`);\n  if (!(key in body)) {\n    return { json: { valid: false } };\n  }\n}\n\nreturn { json: { valid: true } };"}, "typeVersion": 2}, {"id": "81b125f1-faa0-4998-8624-431746052a84", "name": "Check Valid Request", "type": "n8n-nodes-base.if", "position": [440, 20], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "8c7fe174-f284-4e41-b851-8939f0c2d19f", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{ $json.valid }}", "rightValue": ""}]}}, "typeVersion": 2.2}, {"id": "906c671d-e2a6-4a9e-b7df-d7b9142ffeb4", "name": "400 Bad Request", "type": "n8n-nodes-base.respondToWebhook", "position": [780, 280], "parameters": {"options": {"responseCode": 401}, "respondWith": "json", "responseBody": "{\n  \"code\": 400,\n  \"message\": \"Bad Request: Missing required fields\",\n  \"hint\": \"Make sure all required fields are included in the request body.\"\n}"}, "typeVersion": 1}, {"id": "ce657170-34e4-4b40-ba22-bb4638fa98c6", "name": "Create Response", "type": "n8n-nodes-base.set", "position": [920, 20], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "c6258b81-6f40-4dd5-8a60-89e2b0322490", "name": "message", "type": "string", "value": "Success! Workflow completed."}]}}, "typeVersion": 3.4}, {"id": "0a6b9f12-9b60-458e-85de-014a66063e50", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [-440, -280], "parameters": {"color": 6, "width": 360, "height": 460, "content": "### \ud83d\udee0\ufe0f Config Node Setup\n\n*This node defines the configuration for the secure webhook.*\n\n- `config.bearerToken`: The expected Bearer token for authentication.\n\n- `config.requiredFields`: Set one key for each required field in the incoming request body (e.g., `config.requiredFields.message`.\n*\ud83d\udc49 The value doesn't matter, only the keys are checked.*"}, "typeVersion": 1}, {"id": "bba24ba5-3c8d-40f7-99e0-44115b1025e0", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [-440, 200], "parameters": {"color": 3, "width": 1740, "height": 240, "content": "### \ud83d\udeab Error Handling Nodes\n\n*These nodes return standardized JSON error responses:*\n\n- \ud83d\udd12 `401 Unauthorized`:\nTriggered when the request is missing a valid Bearer token.\n\n- \ud83d\udced `400 Bad Request`:\nTriggered when required fields are missing from the request body."}, "typeVersion": 1}, {"id": "f451c9be-4cfb-4628-8aa7-66b66ad86bab", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [840, -280], "parameters": {"color": 4, "width": 460, "height": 460, "content": "### \u2705 Set & 200 Response Nodes\n\n- \ud83e\uddf1 `Create Response`\nBuilds the JSON response from the incoming request.\nUse this to extract, transform, or forward specific values (e.g., message, sender, etc.).\n\n- \ud83d\udcec `200 OK`\nReturns a successful response using values from the `Create Response` node."}, "typeVersion": 1}, {"id": "8d4e8406-c3fe-4e8a-bfa8-18407fe5e67a", "name": "Add workflow nodes here", "type": "n8n-nodes-base.noOp", "position": [680, 20], "parameters": {}, "typeVersion": 1}, {"id": "f3f461a6-dc48-42cd-ac75-d045795006d0", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [160, -280], "parameters": {"color": 7, "width": 440, "height": 460, "content": "### \ud83d\udd0d Required Fields Validator\n\n*This Code node checks if all fields defined in config.requiredFields are present in the incoming request body.*\n\n- Reads the body from the Webhook node.\n\n- Loops through each key in config.requiredFields.\n\n- Returns `{ valid: true }` if all are present, otherwise `{ valid: false }`."}, "typeVersion": 1}, {"id": "2766dae8-8def-462f-a53c-0f51606eea0a", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [-1220, -340], "parameters": {"color": 5, "width": 760, "height": 780, "content": "## \ud83d\udd10 Secure Webhook \u2013 Summary\n\n*This workflow protects a public webhook with **authentication** and **payload validation**.*\n\n\n---\n\n#### \ud83e\udde9 Why use it?\n- \u2705 Ensure only trusted clients can call your workflow (via Bearer token).\n- \u2705 Validate that all expected fields are present in the request body.\n- \u2705 Return helpful and consistent JSON responses (`200`, `400`, `401`).\n\n---\n\n#### \u2699\ufe0f How it works:\n1. **`Webhook`** \u2013 Entry point for external `POST` requests.\n2. **`Configuration`** \u2013 Defines `config.bearerToken` and `config.requiredFields`.\n3. **`Check Authorization Header`** \u2013 Compares incoming Bearer token with config.\n4. **`401 Unauthorized`** \u2013 Returned if the token is missing or incorrect.\n5. **`Has required fields?`** \u2013 JS code checks for required fields in the request body.\n6. **`400 Bad Request`** \u2013 Returned if any required field is missing.\n7. **`Create Response` & `200 OK`** \u2013 Returns a custom success message.\n\n---\n\n#### \ud83d\udee0 Setup Instructions:\n- Set your desired Bearer token in `config.bearerToken`.\n- For each required field, set a key in `config.requiredFields`  \n  *(e.g., `config.requiredFields.message)*.\n*\ud83d\udc49 The value doesn't matter, only the keys are checked.*\n- Replace the **`Add workflow nodes here`** node with your own workflow logic.\n- Edit the `Create Response` node to build your response.\n\n---\n\n\ud83d\udccc *Great for building secure, reusable webhook endpoints for APIs, forms, or 3rd-party services.*"}, "typeVersion": 1}, {"id": "70c8f060-587a-4524-ab32-7362cc0c4cf9", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [-1220, -600], "parameters": {"color": 6, "width": 760, "height": 240, "content": "## Support My Work! \u2764\ufe0f\n\n**\ud83d\udc4b Hello! I'm Audun / xqus** \n\ud83d\udd17 My work: [xqus.com](https://xqus.com)\n\ud83d\udcb8 n8n shop: [xqus.gumroad.com](https://xqus.gumroad.com)\n\n**If you find this workflow helpful**, consider downloading or purchasing it on [Gumroad](https://xqus.gumroad.com/l/hasgi).\n\nYour support helps me create more useful n8n workflows and resources for the community. \n-Thanks a lot! \ud83d\ude4c"}, "typeVersion": 1}], "pinData": {}, "connections": {"200 OK": {"main": [[]]}, "Webhook": {"main": [[{"node": "Configuration", "type": "main", "index": 0}]]}, "Configuration": {"main": [[{"node": "Check Authorization Header", "type": "main", "index": 0}]]}, "Create Response": {"main": [[{"node": "200 OK", "type": "main", "index": 0}]]}, "Check Valid Request": {"main": [[{"node": "Add workflow nodes here", "type": "main", "index": 0}], [{"node": "400 Bad Request", "type": "main", "index": 0}]]}, "Has required fields?": {"main": [[{"node": "Check Valid Request", "type": "main", "index": 0}]]}, "Add workflow nodes here": {"main": [[{"node": "Create Response", "type": "main", "index": 0}]]}, "Check Authorization Header": {"main": [[{"node": "Has required fields?", "type": "main", "index": 0}], [{"node": "401 Unauthorized", "type": "main", "index": 0}]]}}}