# ProvenPin this week: stricter checks and more honest version answers > Source: > Published: 2026-10-29 18:04:26+00:00 ProvenPin is a library of tested code recipes for AI coding models. Each recipe pins exact package versions, runs its own tests in a clean environment, and carries a receipt showing when it last passed. The goal is to help free and cheap models write code that actually runs. It is served over a free MCP server, no API key, no signup. This was a quality week rather than a growth week. The live [health endpoint](https://mcp.provenpin.com/health) shows 556 recipes, up from 555 last Thursday. Most of the work went into making the checks and answers more trustworthy. Here is what shipped (Oct 23 to 29). A recipe can run and pass its tests and still have type errors your editor will flag. CI now runs a strict `tsc` type-check on every TypeScript recipe a pull request adds or changes. New recipes must pass. Older recipes with type errors sit on a known list that is being cleaned up in small batches ([PR #18](https://github.com/provenpin/provenpin/pull/18)). When you ask whether a recipe fits your project, ProvenPin compares your versions to the ones the recipe was tested on. Two fixes this week: `^5.3.0` in package.json is a range, not what you installed. It used to count as an exact match for a recipe tested on 5.3.0. Now it reads as "compatible", with a tip to pass your lockfile for an exact answer.`<6` used to read as a mismatch and `<5.0.0` as compatible. Now an upper bound is judged by whether it allows the tested version ( A recipe might pin 3 packages while the test run installs 8 once sub-dependencies come in. Python receipts now record every package that was actually installed, with exact versions, not just the pinned ones. That makes sub-dependency drift visible. All Python recipes have it ([PR #40](https://github.com/provenpin/provenpin/pull/40)). Claude Code: ``` claude mcp add --transport http provenpin https://mcp.provenpin.com/mcp ``` Cursor users can use the one click "Add to Cursor" button on the [homepage](https://provenpin.com). Other clients: endpoint `https://mcp.provenpin.com/mcp`, setup steps in the [README](https://github.com/provenpin/provenpin#install). Site: [provenpin.com](https://provenpin.com). Source and receipts: [github.com/provenpin/provenpin](https://github.com/provenpin/provenpin).