MCP server that exposes ast-grep (sg) as two tools for structural code search.
ast-grep-mcp is an MCP project maintained in the isco0819/ast-grep-mcp repository. The maintainer describes its purpose as “MCP server that exposes ast-grep (sg) as two tools for structural code search”. Read the project documentation for the complete scope.
The project provides a local client configuration using node. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.
Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.
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 |
|---|---|
| param | type |
| lang | string |
| pattern | string |
| dir | string |
| async-no-catch | await expressions — check for missing try/catch |
| hooks-missing-deps | useEffect(..., []) — empty deps may hide missing dependencies |
| route-no-auth | Express app.METHOD(path, handler) — routes that may lack auth middleware |
| sql-no-param | Template-literal SQL strings — potential injection risk |
| promise-no-return | new Promise(...) bodies — check all paths resolve/reject |
| ast_search | |
| ast_search_preset |
{
"mcpServers": {
"ast-grep": {
"command": "node",
"args": [
"/absolute/path/to/ast-grep-mcp/src/index.js"
]
}
}
}From the project documentation. Replace placeholders and example paths before connecting.
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