AST MCP Server

An MCP (Model Context Protocol) server that provides code structure and semantic analysis capabilities through Abstract Syntax Trees (AST) and Abstract Semantic Graphs (ASG).

Local serverstdio

What is the AST MCP Server?

AST MCP Server is an MCP project maintained in the angrysky56/ast-mcp-server repository. The maintainer describes its purpose as “An MCP (Model Context Protocol) server that provides code structure and semantic analysis capabilities through Abstract Syntax Trees (AST) and Abstract Semantic Graphs (ASG)”. Read the project documentation for the complete scope.

Local setup

The project provides a local client configuration using uv. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.

Source

Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
parse_to_ast	Parse code into an Abstract Syntax Tree
generate_asg	Generate an Abstract Semantic Graph from code
analyze_code	Analyze code structure and complexity
supported_languages	Get the list of supported programming languages
parse_and_cache	Parse code into an AST and cache it for resource access
generate_and_cache_asg	Generate an ASG and cache it for resource access
analyze_and_cache	Analyze code and cache the results for resource access
parse_to_ast_incremental	Parse code with incremental support for faster processing
generate_enhanced_asg	Generate an enhanced ASG with better scope handling
diff_ast	Find differences between two versions of code
find_node_at_position	Locate a specific node at a given line and column
parse_and_cache_incremental	Parse code incrementally and cache the results
generate_and_cache_enhanced_asg	Generate an enhanced ASG and cache it
ast_diff_and_cache	Generate an AST diff and cache it

How to install the AST MCP Server

{
  "mcpServers": {
    "AstAnalyzer": {
      "command": "uv",
      "args": [
        "--directory",
        "/home/ty/Repositories/ai_workspace/ast-mcp-server/ast_mcp_server",
        "run",
        "server.py"
      ]
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.