> ## Documentation Index
> Fetch the complete documentation index at: https://composio-27-feat-docs-revamp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 🦜🔗 Using Composio With LangChain

> Integrate Composio with LangChain agents to let them seamlessly interact with external apps

## Star A Repository on GitHub

In this example, we will use LangChain Agent to star a repository on GitHub using Composio Tools

<Steps>
  <Step title="Install Packages">
    <CodeGroup>
      ```bash Python
      pip install composio-langchain langchain_openai
      ```

      ```javascript JavaScript
      npm install composio-core langchain @langchain/openai
      ```
    </CodeGroup>
  </Step>

  <Step title="Import Libraries & Initialize ComposioToolSet & LLM">
    <CodeGroup>
      ```python Python
      from langchain.agents import create_openai_functions_agent, AgentExecutor
      from langchain import hub
      from langchain_openai import ChatOpenAI
      from composio_langchain import ComposioToolSet, App

      llm = ChatOpenAI()
      composio_toolset = ComposioToolSet()
      ```

      ```javascript JavaScript
      import { ChatOpenAI } from "@langchain/openai";
      import { createOpenAIFunctionsAgent, AgentExecutor } from "langchain/agents";
      import { LangchainToolSet } from "composio-core";
      import { pull } from "langchain/hub";

      const llm = new ChatOpenAI();
      const toolset = new LangchainToolSet();
      ```
    </CodeGroup>
  </Step>

  <Step title="Connect Your GitHub Account">
    <Info>You need to have an active GitHub Integration. Learn how to do this [here](https://youtu.be/LmyWy4LiedQ?si=u5uFArlNL0tew0Wf)</Info>

    <CodeGroup>
      ```shell CLI
      composio login
      composio add github
      ```

      ```python Python
      request = composio_toolset.initiate_connection(app=App.GITHUB)
      print(f"Open this URL to authenticate: {request.redirectUrl}")
      ```

      ```javascript JavaScript
      const connection = await toolset.connectedAccounts.initiate({appName: "github"})
      console.log(`Open this URL to authenticate: ${connection.redirectUrl}`);
      ```
    </CodeGroup>

    <Tip>
      Don't forget to set your `COMPOSIO_API_KEY` and `OPENAI_API_KEY` in your environment variables.
    </Tip>
  </Step>

  <Step title="Get All GitHub Tools">
    You can get all the tools for a given app as shown below, but you can get **specific actions** and filter actions using **usecase** & **tags**. Learn more [here](../../patterns/tools/use-tools/use-specific-actions)

    <CodeGroup>
      ```python Python
      tools = composio_toolset.get_tools(apps=[App.GITHUB])
      ```

      ```javascript JavaScript
      const tools = await toolset.getTools({ apps: ["github"] });
      ```
    </CodeGroup>
  </Step>

  <Step title="Define the Agent">
    <CodeGroup>
      ```python Python
      prompt = hub.pull("hwchase17/openai-functions-agent")
      agent = create_openai_functions_agent(llm, tools, prompt)
      agent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True)
      ```

      ```javascript JavaScript
      const prompt = await pull(
          "hwchase17/openai-functions-agent"
      );
      const agent = await createOpenAIFunctionsAgent({
          llm,
          tools: tools,
          prompt,
      });
      const agentExecutor = new AgentExecutor({ agent, tools, verbose: true });
      ```
    </CodeGroup>
  </Step>

  <Step title="Execute the Agent">
    <CodeGroup>
      ```python Python
      task = "Star a repo composiohq/composio on GitHub"
      agent_executor.invoke({"input": task})
      ```

      ```javascript JavaScript
      const response = await agentExecutor.invoke({ input: "Star a repo composiohq/composio on GitHub" });
      console.log(response);
      ```
    </CodeGroup>
  </Step>
</Steps>