CodannaMCP Server

Codanna is a local-first code intelligence server for AI coding agents. It indexes a repository on disk and exposes symbol search, semantic search, call graphs, dependency tracking, document RAG and impact analysis over the Model Context Protocol, so an agent can ask one question instead of running the usual grep-open-read loop across dozens of files.

The headline tool is semantic_search_with_context, which fuses five separate lookups into one response: for every semantic match it returns the symbol identity, its signature and docstring, the functions it calls with exact call sites, the functions that call it, and the recursive blast radius of changing it. For an agent working in a large codebase, that collapses a long chain of tool calls into a single pre-correlated result.

Codanna runs two ways from the same toolset. As a persistent MCP server (codanna serve, over stdio, HTTP or HTTPS) it suits session-long agent work, and --watch keeps the index hot as files change. As a one-shot CLI (codanna mcp find_symbol name:"…") it needs no daemon, which makes it easy to wrap in slash commands, bash hooks, CI steps or an Agent Skill in any harness that can run a shell command.

Written in Rust and distributed via an install script, Homebrew, PowerShell or Cargo. It parses 15 languages — Rust, Python, JavaScript, TypeScript, Java, Kotlin, Go, PHP, C, C++, C#, Clojure, Lua, Swift and GDScript — and works with Claude Code, Cursor, Windsurf, Codex, Gemini and any MCP-compatible client. Indexing happens entirely on your machine, so no source code is sent to a third-party service. Apache-2.0 licensed and free.