How to integrate Sourcegraph MCP with Hermes

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows. This guide explains the easiest and most robust way to connect your Sourcegraph account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Sourcegraph logoSourcegraph
Api Key

Sourcegraph is a code intelligence platform for searching, understanding, and managing code across large-scale repositories. It helps developers find, review, and analyze code quickly, boosting productivity and collaboration.

8 Tools

Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your Sourcegraph account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate Sourcegraph with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating Sourcegraph with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Sourcegraph

Ask your agent to connect to Sourcegraph, or simply request any Sourcegraph-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Sourcegraph connection.


Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to Sourcegraph or request any Sourcegraph-related task. It will prompt you to authenticate and authorize access.

5. Done!

What is the Sourcegraph MCP server, and what's possible with it?

The Sourcegraph MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Sourcegraph account. It provides structured and secure access to your codebase, so your agent can perform actions like searching repositories, inspecting commits, fetching file contents, and analyzing code languages on your behalf.

  • Repository discovery and listing: Let your agent list all repositories in your Sourcegraph instance, making it easy to navigate and select codebases for deeper analysis.
  • Commit inspection and comparison: Have the agent fetch details about specific commits or compare two commits to see file-level changes and diffs in any repository.
  • File content retrieval: Ask your agent to fetch the raw contents of any file in your codebase—no cloning or manual browsing required.
  • Repository file and language enumeration: Enable the agent to list all files, directories, and programming languages used in a given repository for a comprehensive code overview.
  • User identity and permissions checks: Let your agent verify the authenticated user or check site settings permissions before performing sensitive actions.

Way Forward

With Sourcegraph connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

TOOLS

Supported Tools

Every Sourcegraph action and event your agent gets out of the box.

Check Site Settings Edit Permission

Tool to check whether site settings can be edited through the API.

Compare Commits

Tool to compare two commits in a repository and retrieve their file diffs.

Get Commit Details

Get detailed information about a specific commit in a repository.

Get Current User

Tool to retrieve information about the currently authenticated user.

Get File Contents

Tool to fetch the contents of a specified file on the default branch.

List Repositories

Tool to list repositories on the Sourcegraph instance.

List Repository Files

Tool to list all files and directories in a repository path.

List repository languages

Tool to list languages used in a repository.

FAQ

Frequently asked questions

With a standalone Sourcegraph MCP server, the agents and LLMs can only access a fixed set of Sourcegraph tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Sourcegraph and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Sourcegraph tools.

Yes, absolutely. You can configure which Sourcegraph scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Sourcegraph data and credentials are handled as safely as possible.

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