OpenGrok MCP Server

Command

Environment

• OPENGROK_BASE_URLrequired

  OpenGrok server base URL (e.g. https://opengrok.example.com/source/)

• OPENGROK_USERNAMErequired

  OpenGrok authentication username

• OPENGROK_PASSWORDsecret

  OpenGrok authentication password. Prefer storing via OS keychain using 'npx opengrok-mcp-server setup'.

• OPENGROK_VERIFY_SSL

  Verify TLS certificates. Set to false for self-signed or internal CA certs.

• OPENGROK_CODE_MODE

  Enable Code Mode: 5-tool sandbox interface with env.opengrok.* JavaScript API. Saves 80-95% tokens on large codebases.

• OPENGROK_DEFAULT_PROJECT

  Default project to scope all searches. Can be overridden per call.

• OPENGROK_CONTEXT_BUDGET

  Response size tier controlling token usage.

• OPENGROK_ENABLE_ELICITATION

  Enable interactive project picker at session start and env.opengrok.elicit() in Code Mode sandbox. Requires a supporting MCP client.

• OPENGROK_SAMPLING_MODEL

  Model preference for MCP Sampling (used for error explanation and query reformulation).