mcp-gopls

mcp-gopls puts Go’s own language server, gopls, behind an MCP interface, giving an agent the same semantic understanding a human gets from an IDE rather than plain-text file reading. Go-to-definition, find-references, hover, completion, workspace symbol search, and code actions all route through LSP, so results reflect actual type information instead of pattern matching.

Where it goes further than gopls’ own experimental built-in MCP server is tooling: run_go_test and analyze_coverage execute tests and report coverage directly, run_go_mod_tidy and module_graph handle dependency housekeeping, and run_govulncheck surfaces known vulnerabilities — all as structured MCP tool results rather than shell output an agent has to parse. Long-running commands stream progress notifications so a client can show status rather than blocking silently.

It’s a standalone Go binary (go install), configurable via MCP_GOPLS_* environment variables or CLI flags for workspace path, gopls binary location, and logging, and is documented against Claude, Cursor, and Copilot. Tested against Go 1.25.x and the latest gopls release.