src-cli MCP Server

This is a proof-of-concept (POC) for a MCP server that can be used to run batch changes via the src-cli tool.

It works with Claude Desktop as the MCP client.

This POC takes a local file path to a batch change spec file and uploads it to Sourcegraph via the src-cli tool.

Prerequisites

• Sourcegraph Access Token:

• Claude Desktop
• Node.js (>= v22)

Steps

Clone this repo to your local machine

  git clone git@github.com:sourcegraph/test-mcp.git
  cd test-mcp/src

Install dependencies and spin up MCP server

pnpm run-build

Tell Claude Desktop about your server

In order for Claude Desktop to know about your MCP server, you need to add it to its configuration. Find your local claude_desktop_config.json file and add the following, replacing necessary values with your own:

{
  "mcpServers": {
    // {... other MCP servers},
    "execute-batch-change-spec": {
      "command": "node",
      "args": [
        "/Users/audrey.lorberfeld/Desktop/src/test-mcp/build/batches.js" // Replace with your own path to this repo's /build/batches.js file
      ],
      "env": {
        "SRC_ENDPOINT": "https://sourcegraph.sourcegraph.com",
        "SRC_ACCESS_TOKEN": "<your key here>",  // Replace with your Sourcegraph Access Token
        "PATH": "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin",  // Replace with your `src-cli` path
        "HOME": "/Users/audrey.lorberfeld"  // Replace with your $HOME path
      },
      "permissions": {
        "allow_local_tool_execution": true,
        "allow_network_access": true,
        "allow_env_access": true,
        "allow_home_access": true,
        "allow_system_binaries": true,
        "allow_debugging": true
      }
    }
  }
}

Start Claude Desktop

Note: You need to restart Claude Desktop if you already have it open, once you (re)launch this MCP server, or it will not pick up the latest changes.

You should see the MCP server in the 'Available MCP Tools' section of Claude Desktop (accessible by clicking on the hammer icon in the chat interface).

Run a batch change!

Note: Expect this step to take a minute or two.

You can now run a batch change by typing in the chat interface something like "Please generate a batch change for this spec file: <path-to-your-spec-file.yaml>"

A sample spec can be found in this repo under audrey-was-here.yaml.

Claude Desktop should prompt you for permission to access your file system. Once you grant it, Claude Desktop should use the MCP server to run the batch change and push it up to Sourcegraph (s2).