Code Synapse — Fit Repo Finder

Code Synapse is an MCP (Model Context Protocol) server for pre-adoption decisions on open-source reuse. Send a capability need plus your minimal constraints, and it returns individual GitHub repositories that fit — each with a per-constraint pass / fail / unknown verdict and a freshness signal. It recommends; you decide. Free to use, no account required.

What it returns

• Individual repos, fit-ranked — not bundles, sets, or assembled stacks. Your agent does the combining.
• Compatibility grounds — each candidate judged against runtime, protocols, auth, license, and its consumes / produces interfaces.
• Freshness — archived and dead projects are flagged or excluded before you adopt them.
• Skip what you already have — existing dependencies and explicit exclusions are removed from the results.
• Observed vs inferred — every candidate carries an evidence_basis. Stars and last-push date are observed; runtime, auth, protocols and the written summary are model-inferred.

The corpus

24,000+ servable GitHub repositories, with roles and interfaces extracted for 24,000+ of them. Liveness is re-checked every day, and archived or dead repositories are dropped from what is served. Coverage is deliberately bounded: the corpus holds GitHub repositories with 2,000 stars or more, so new and niche projects are structurally absent. It is a daily-refreshed snapshot, not a live GitHub search.

Tools

find_fit_candidates — the current contract: a capability need plus constraints in, fit-ranked candidates with per-constraint verdicts and freshness out. search_components — deprecated, kept for compatibility; corpus search with no verdict layer.

Connect it to your coding agent

Endpoint: https://code-synapse-mcp.leewaystudio.com/mcp — MCP Streamable HTTP, remote, with nothing to install locally.

• Codex CLI: codex mcp add code-synapse --url https://code-synapse-mcp.leewaystudio.com/mcp
• Claude Code: claude mcp add --transport http code-synapse https://code-synapse-mcp.leewaystudio.com/mcp
• Cursor: add an MCP server of type url named code-synapse pointing at the same endpoint.

This web page can only take a typed query. The deeper path is the agent one: your own coding agent reads your actual project — dependencies, structure, gaps — and asks Code Synapse for the repos that fill them. Code Synapse never reads your code itself; it receives only the short capability-need string your agent sends.