ast-grep-mcp
About
MCP server that exposes ast-grep (sg) as two tools for structural code search.
Details
- Author
- isco0819
- Categories
- Developer Tools, Search, Knowledge Base
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Setup
Install ast-grep-mcp in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/isco0819/ast-grep-mcp
Follow the installation instructions in the repository README, then restart your MCP client.
MCP server that exposesast-grep(sg) as two tools for structural code search.
# via npm npm i -g @ast-grep/cli # via cargo cargo install ast-grep
# from this directory npm install node src/index.js # starts MCP server on stdio # or via npx after publish: # npx ast-grep-mcp
Structural code search using an ast-grep pattern.
Returns:JSON array of{ file, line, match, snippet }
Use ast_search with lang=ts, pattern=console.log($MSG), dir=./src
~/Library/Application Support/Claude/claude_desktop_config.json
{ "mcpServers": { "ast-grep": { "command": "node", "args": ["/absolute/path/to/ast-grep-mcp/src/index.js"] } } }
{ "mcpServers": { "ast-grep": { "command": "node", "args": ["/absolute/path/to/ast-grep-mcp/src/index.js"] } } }
{ "mcpServers": { "ast-grep": { "command": "npx", "args": ["ast-grep-mcp"] } } }
$VAR – single node (any) $$$NODES – multiple nodes (spread) template $X – template literal containing X foo($A, $B) – function call with two args
Seeast-grep pattern syntaxfor full docs.
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