io.github.xieyuschen/gopls-mcp MCP Server

gopls-mcp is an MCP server that delivers type-checker-level semantic analysis for Go code directly to LLMs. Unlike text-based search, it resolves Go's type system with compiler precision, enabling accurate interface satisfaction checks, cross-package identity resolution, and scope analysis. It reduces tool calls by 2–4× on semantic tasks compared to grep-based approaches.

gopls-mcp gives AI agents access to gopls' semantic understanding of Go codebases. It excels at semantic tasks like finding all concrete types implementing an interface, tracing call hierarchies, and mapping package dependencies. For simple same-file lookups, plain text search remains equally effective; gopls-mcp shines on complex, type-aware navigation.

No machine-readable install method is published for this server in the registry. Check the repository or website for setup instructions.

• Type-aware code navigation — Resolve Go's type system to find definitions, references, and implementations with compiler precision.
• Interface implementation discovery — Find all concrete types that satisfy a given interface.
• Call hierarchy tracing — Map function call chains and dependencies across packages.
• Package dependency analysis — Understand and navigate cross-package relationships and imports.
• Scope and shadowing resolution — Correctly resolve variable and type identities accounting for Go's scoping rules.

• Find all concrete types implementing a specific interface in a large codebase
• Trace call hierarchies to understand how functions are invoked across packages
• Navigate to definitions and references with full type-system awareness, not just text matching
• Map package dependencies and understand cross-package relationships
• Resolve shadowed variables and scopes correctly for accurate code understanding