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Code Graph MCP — Development skill for Claude Code

Development community

AST knowledge graph MCP server for Claude Code — semantic search, call graph traversal, HTTP route tracing, impact analysis.

How to install Code Graph MCP

This entry records only its repository, not the path inside it, so there is no exact command to give. Open sdsrss/code-graph-mcp and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Code Graph MCP does

AST knowledge graph MCP server for Claude Code — semantic search, call graph traversal, HTTP route tracing, impact analysis. Auto-indexes 10 languages via Tree-sitter.

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README

code-graph-mcp

A high-performance code knowledge graph server implementing the [Model Context Protocol (MCP)](https://modelcontextprotocol.io/). Indexes codebases into a structured AST knowledge graph with semantic search, call graph traversal, and HTTP route tracing — designed to give AI coding assistants deep, structured understanding of your code.

Features

Multi-language parsing — Tree-sitter AST extraction across tiers of depth:
- Full (calls + imports + inheritance): TypeScript/TSX, JavaScript, Go, Python, Rust, Java. HTTP route extraction additionally covers TypeScript/TSX + JavaScript (Express/Connect), Go (net/http), Python (Flask/FastAPI), and Rust axum (.route() chains with inline .nest() prefixes; named handlers only) — actix/rocket and Java Spring are not yet route-extracted
- Smoke-tested (calls + imports + inheritance): C#, Kotlin, Ruby, PHP, Swift, Dart
- Limited (functions + calls + #include imports + gtest test markers + C++ base-class inheritance + Class::method scope qualification): C, C++
- Scripting: Bash (functions + commands + source/. imports), Markdown (headings)
- File-FTS only (no AST symbol extraction): HTML, CSS, JSON
- Test markers — detected from the AST for Rust (#[test] / #[cfg(test)]), JavaScript/TypeScript/TSX (describe/it/test blocks and their callbacks) and C/C++ (gtest TEST macros). Go, Python, Java and the rest fall back to path/name heuristics (tests/, src/test/java/, *_test.*, *.test.js, test_*, *Test)
- Value/type references — a references relation for symbols that are used without being called, imported or inherited (path-qualified constants, type-position uses, functions passed as values): Rust, TypeScript/TSX, JavaScript, Python, Go, Java, C, C++
Semantic code search — Hybrid BM25 full-text + vector semantic search with Reciprocal Rank Fusion (RRF), powered by sqlite-vec
Call graph traversal — Recursive CTE queries