Open-source MCP server gives coding agents TS structural understanding, cutting rename task tokens ~76%
Imaginary_Food_7102 · reddit · 2026-09-06
The author released Programmatic, an open-source MCP server built on the TypeScript Language Service that gives AI coding agents structural codebase understanding via findsymbol, findreferences, renamesymbol, inspectfile, and check — replacing grep-based navigation that hits comments/strings and misses real file relationships. On rename tasks in the Zod codebase with Claude Code: with Programmatic 8/8 succeeded at 133k avg tokens, $0.096, 14s; raw tools 7/8 at 560k avg tokens, $0.280, 79s — roughly 4x cheaper on tokens and 5x faster. Built around the actual TS compiler/binder and stress-tested with imports/exports, shadowing, JSX, tsconfig boundaries, malformed projects, rollback, and fuzzing. GitHub: DarkLordGeo/programmatic.
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