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ast-grep MCP Server (Rust)

Name: ast-grep MCP Server (Rust)
Availability: InStock
Author: godspeedai

by godspeedai

Structural code search for AI assistants using ast-grep, implemented in Rust.

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Works in:Cursor

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What it does

This server provides AI assistants with structural code search capabilities via ast-grep. Unlike regex-based search, it understands the syntax tree of the code, allowing for more precise searches and modifications across a wide variety of programming languages.

Tools

dump_syntax_tree: Inspect the syntax tree or pattern structure for debugging rules.
test_match_code_rule: Test a YAML ast-grep rule against a provided code snippet.
find_code: Search a project using a specific ast-grep pattern.
find_code_by_rule: Search a project using a comprehensive YAML ast-grep rule.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "ast-grep": {
      "command": "ast-grep-mcp-server",
      "args": [],
      "env": {}
    }
  }
}

Supported hosts

Cursor
Claude Desktop
VS Code

Quick install

cargo install ast-grep-mcp

Information

Pricing: free
Published: 4/18/2026
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Related Apps

Choose your AI client and follow the steps below.

Cursor

{"mcpServers": {"ast-grep": {"command": "ast-grep-mcp-server", "args": [], "env": {}}}}

Claude Desktop

{"mcpServers": {"ast-grep": {"command": "ast-grep-mcp-server", "args": [], "env": {}}}}