An MCP server that cuts coding-agent token usage by retrieving only the relevant JS/TS code using the TypeScript compiler and Jev.
View on GitHub ↗Homepage ↗Retrieval benchmark on 19 JS/TS tasks with labels written by the JevTrace authors — see the method, per-task results and limitations.
Give it a coding task; it returns the JS/TS code that task needs, within a token budget. It uses the TypeScript compiler to follow calls, types, callers and tests, and uses the Jev decision model (through OpenRouter, TypeSafe, Vercel AI Gateway, OpenCode Zen or your own endpoint) to judge relevance.
Codex and Cursor take one config block each: see Claude Code, Codex and Cursor. To try it without an agent:
Ask about one behaviour or area of an existing TS/JS codebase ("where is X decided, what else touches it"). Project-wide requests such as "find bugs" or "review everything" get per-area subtasks to call it with instead of code. Supports .ts/.tsx/.js/.jsx/.mjs/.cjs and Vue components, ES modules and CommonJS, with or without a tsconfig/jsconfig, up to 20,000 source files; not Svelte/Astro — see supported projects.
- Claude Code, Codex and Cursor: setup for each client, and what to do when it does not work - Usage: CLI options, providers, MCP tools and parameters, benchmarks - Architecture: how discovery, compiler expansion and ranking work, and their limits - Agent benchmark vs jevgrep and ttsc, retrieval benchmark vs jevgrep, evaluation and real-task evaluation
From the project README.
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Local-first MCP plugin for continuous software-quality review by AI coding agents, powered by Jev.
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