koda-ast

MCP server for tree-sitter AST analysis, part of the Koda AI coding agent.

Extracts function signatures, class definitions, and call graphs from source code using embedded tree-sitter parsers. Communicates via the Model Context Protocol over stdio.

Supported languages

• Rust: .rs
• Python: .py, .pyi, .pyw
• JavaScript/TypeScript: .js, .jsx, .mjs, .cjs, .ts, .mts, .cts, .tsx
• Go: .go
• Java: .java
• C/C++: .c, .h, .cpp, .cc, .cxx, .hpp, .hh
• Bash: .sh, .bash

Additional languages require adding tree-sitter grammars to this crate — see #298.

Built-in integration

koda-ast is compiled into Koda as a direct library call — no setup needed. Just ask koda to analyze code structure and it works out of the box.

The standalone MCP server binary is also available for use in other editors.

Manual setup

cargo install koda-ast

Add to .mcp.json:

{
  "mcpServers": {
    "ast": {
      "command": "koda-ast",
      "args": []
    }
  }
}

Exposes one MCP tool: AstAnalysis — extracts functions, classes, and call graphs from source files.

License

MIT