OpenGrok MCP Server
Let your coding agent search and cite symbols across huge monorepos through your company OpenGrok instance instead of blind grep.
Overview
OpenGrok MCP Server is a MCP server for the Build phase that connects AI coding agents to an OpenGrok search index for fast context across large codebases.
What is this MCP server?
- Stdio MCP bridge to OpenGrok HTTP search (npm package opengrok-mcp-server v3.3.5)
- Designed for instant AI context across massive indexed codebases
- Published on MCP registry with GitHub source at opengrok-mcp-server
- Complements local file reads with enterprise-scale xref and path search
- Registry version 3.3.5
- Transport: stdio
- Package identifier: opengrok-mcp-server on npm
What problem does it solve?
Agents waste tokens and time grep-ing huge repos when your team already indexes code in OpenGrok but the agent cannot query it.
Who is it for?
Indie or solo builders on teams with an existing OpenGrok deployment who want MCP-native codebase search in Claude Code or Cursor.
Skip if: Builders without any OpenGrok instance, or those who only need single-repo local search with no enterprise index.
What do I get? / Deliverables
After you register the stdio server, the agent can pull OpenGrok-backed search results into the chat for accurate navigation and citations.
- MCP tools that return OpenGrok search hits for agent context
- Stdio bridge between agent and corporate code index
Recommended MCP Servers
Journey fit
Cross-repo symbol and definition lookup is a daily build-phase activity when implementing features in large or unfamiliar codebases. OpenGrok MCP is an integration that wires an existing search index into the agent loop, not a standalone app feature.
How it compares
MCP integration to OpenGrok search, not a hosted skill or a replacement for cloning and editing files locally.
Common Questions / FAQ
Who is OpenGrok MCP Server for?
Developers and solo builders whose org already runs OpenGrok and who want their AI agent to query that index via Model Context Protocol.
When should I use OpenGrok MCP Server?
Use it during build and debug work on large or multi-repo codebases when you need symbol lookup, path search, or xref context faster than manual grep.
How do I add OpenGrok MCP Server to my agent?
Install the npm package opengrok-mcp-server, configure stdio MCP in Claude Code or Cursor, and set your OpenGrok base URL and authentication per the registry README.