code-search-mcp

Read-only MCP server for code-search-api. It lets Claude Desktop, Claude Code, OpenClaw, Hermes Agent, Codex CLI, and any MCP-compatible client query a local codebase by intent through a running code-search-api service.

code-search-mcp talks to the FastAPI service over HTTP and uses stdio for MCP transport. It does not index, delete, backfill, or mutate the code-search-api database.

Tools

• search_code - semantic search over the indexed workspace. Supports mode (hybrid, code, summary), project, limit, min_score, response_format, include_content, and max_content_chars.
• list_projects - project names and chunk, embedding, and summary counts from /api/projects.
• code_search_stats - chunk type, per-project coverage, and summary model coverage from /api/stats and /api/summary-stats.
• health - readiness and index counters from /health.

search_code response formats:

| Format | Description | |--------|-------------| | raw | The unmodified code-search-api /api/search response. This is the default. | | compact | Keeps scores, file path, project, chunk metadata, summary, and optional trimmed content preview. | | by_file | Groups compact matches by file_path and surfaces each file's best score. |

Example prompts:

• "Find the FastAPI route that handles semantic code search."
• "Where is API key authentication enforced?"
• "List likely files involved in summary backfills, grouped by file."
• "Search only the code-search-api project for embedding cache logic."

Install

npm install -g @solomonneas/code-search-mcp

Or from source:

git clone https://github.com/solomonneas/code-search-mcp.git
cd code-search-mcp
npm install
npm run build

Configuration

Start code-search-api first:

code-search-api serve

Set these environment variables in your MCP client config:

| Variable | Required | Default | Description | |----------|----------|---------|-------------| | CODE_SEARCH_API_URL | no | http://localhost:5204 | Base URL for the running code-search-api service | | CODE_SEARCH_API_KEY | no | - | Optional API key sent as X-API-Key when the FastAPI service requires it |

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "code-search": {
      "command": "code-search-mcp",
      "env": {
        "CODE_SEARCH_API_URL": "http://localhost:5204",
        "CODE_SEARCH_API_KEY": "your-api-key-here"
      }
    }
  }
}

Claude Code

claude mcp add code-search \
  --env CODE_SEARCH_API_URL=http://localhost:5204 \
  --env CODE_SEARCH_API_KEY=your-api-key-here \
  -- code-search-mcp

Add --scope user to make it available from any directory instead of only the current project.

OpenClaw

If you're running from a source checkout instead of the npm-installed binary, point command/args at the built dist/index.js:

openclaw mcp set code-search '{
  "command": "node",
  "args": ["/absolute/path/to/code-search-mcp/dist/index.js"],
  "env": {
    "CODE_SEARCH_API_URL": "http://localhost:5204",
    "CODE_SEARCH_API_KEY": "your-api-key-here"
  }
}'

Or, with the global npm install:

openclaw mcp set code-search '{
  "command": "code-search-mcp",
  "env": {
    "CODE_SEARCH_API_URL": "http://localhost:5204",
    "CODE_SEARCH_API_KEY": "your-api-key-here"
  }
}'

Then restart the OpenClaw gateway so the new server is picked up:

systemctl --user restart openclaw-gateway
openclaw mcp list   # confirm "code-search" is registered

Hermes Agent

Hermes Agent reads MCP config from ~/.hermes/config.yaml under the mcp_servers key. Add an entry:

mcp_servers:
  code-search:
    command: "code-search-mcp"
    env:
      CODE_SEARCH_API_URL: "http://localhost:5204"
      CODE_SEARCH_API_KEY: "your-api-key-here"

Or, when running from a source checkout instead of the global npm install:

mcp_servers:
  code-search:
    command: "node"
    args: ["/absolute/path/to/code-search-mcp/dist/index.js"]
    env:
      CODE_SEARCH_API_URL: "http://localhost:5204"
      CODE_SEARCH_API_KEY: "your-api-key-here"

Then reload MCP from inside a Hermes session:

/reload-mcp

Codex CLI

Codex CLI registers MCP servers via codex mcp add:

codex mcp add code-search \
  --env CODE_SEARCH_API_URL=http://localhost:5204 \
  --env CODE_SEARCH_API_KEY=your-api-key-here \
  -- code-search-mcp

Or, when running from a source checkout:

codex mcp add code-search \
  --env CODE_SEARCH_API_URL=http://localhost:5204 \
  --env CODE_SEARCH_API_KEY=your-api-key-here \
  -- node /absolute/path/to/code-search-mcp/dist/index.js

Codex writes the entry to ~/.codex/config.toml under [mcp_servers.code-search]. Verify with:

codex mcp list

Development

npm install
npm run typecheck
npm test
npm run build
npm run smoke       # requires a live code-search-api service
npm run pack:dry-run

Release

The release script verifies the package, optionally smoke-tests against a live service, publishes to npm, packs the exact npm artifact into /tmp, extracts it, and publishes that extracted package to ClawHub with source provenance pointing at this repo.

scripts/release.sh --publish

Set SKIP_SMOKE=1 if no local code-search-api service is available during release.

License

MIT