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*   Dria Retriever

Dria Retriever
==============

The [Dria](https://dria.co/profile) retriever allows an agent to perform a text-based search across a comprehensive knowledge hub.

Setup[​](#setup "Direct link to Setup")
---------------------------------------

To use Dria retriever, first install Dria JS client:

*   npm
*   Yarn
*   pnpm

    npm install dria

    yarn add dria

    pnpm add dria

You need to provide two things to the retriever:

*   **API Key**: you can get yours at your [profile page](https://dria.co/profile) when you create an account.
*   **Contract ID**: accessible at the top of the page when viewing a knowledge or in its URL. For example, the Bitcoin whitepaper is uploaded on Dria at [https://dria.co/knowledge/2KxNbEb040GKQ1DSDNDsA-Fsj\_BlQIEAlzBNuiapBR0](https://dria.co/knowledge/2KxNbEb040GKQ1DSDNDsA-Fsj_BlQIEAlzBNuiapBR0), so its contract ID is `2KxNbEb040GKQ1DSDNDsA-Fsj_BlQIEAlzBNuiapBR0`. Contract ID can be omitted during instantiation, and later be set via `dria.contractId = "your-contract"`

Dria retriever exposes the underlying [Dria client](https://npmjs.com/package/dria) as well, refer to the [Dria documentation](https://github.com/firstbatchxyz/dria-js-client?tab=readme-ov-file#usage) to learn more about the client.

Usage[​](#usage "Direct link to Usage")
---------------------------------------

tip

See [this section for general instructions on installing integration packages](/v0.2/docs/how_to/installation#installing-integration-packages).

*   npm
*   Yarn
*   pnpm

    npm install dria @langchain/community

    yarn add dria @langchain/community

    pnpm add dria @langchain/community

    import { DriaRetriever } from "@langchain/community/retrievers/dria";// contract of TypeScript Handbook v4.9 uploaded to Dria// https://dria.co/knowledge/-B64DjhUtCwBdXSpsRytlRQCu-bie-vSTvTIT8Ap3g0const contractId = "-B64DjhUtCwBdXSpsRytlRQCu-bie-vSTvTIT8Ap3g0";const retriever = new DriaRetriever({  contractId, // a knowledge to connect to  apiKey: "DRIA_API_KEY", // if not provided, will check env for `DRIA_API_KEY`  topK: 15, // optional: default value is 10});const docs = await retriever.invoke("What is a union type?");console.log(docs);

#### API Reference:

*   [DriaRetriever](https://v02.api.js.langchain.com/classes/langchain_community_retrievers_dria.DriaRetriever.html) from `@langchain/community/retrievers/dria`

* * *

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