ast-grep MCP provides a bridge to the ast-grep code search tool, enabling AI assistants to find code patterns in projects using abstract syntax tree matching. The implementation exposes a single tool that accepts a pattern, project folder, and optional language parameter, then executes the ast-grep CLI command and returns the results as structured JSON. This server is particularly valuable for developers who want to leverage AI assistants for code analysis, pattern matching, and refactoring tasks without leaving their development environment.
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Visualize the Abstract Syntax Tree structure of code snippets. Essential for understanding how to write effective search patterns.
Test ast-grep YAML rules against code snippets before applying them to larger codebases. Validates rules work as expected and helps debug complex matching logic.
Search codebases using simple ast-grep patterns for straightforward structural matches. Parameters: max_results (optional integer), output_format (optional string, default: 'text').
Advanced codebase search using complex YAML rules that can express sophisticated matching criteria. Parameters: max_results (optional integer), output_format (optional string, default: 'text').
