pyproject.toml Release Gate (PEP 639)

Runs the same checker as the npm package @readystack/pyproject-release-gate on a Node.js runtime that pip installs for you (nodejs-wheel-binaries) - no system Node.js needed. Your files are checked locally.

19 date-aware checks on the [project] metadata that decides whether your next release uploads

Install

pyproject-release-gate file

Node 18+. The same 19 rules as the VS Code extension, from a terminal or CI.

Free

• Every one of the 19 findings for the pyproject.toml open in your editor, with the line number, the spec that moved and the replacement text — nothing withheld, no watermark, no counter
• --rules lists every rule

With a licence ($29 once)

• Sweeping every pyproject.toml in a monorepo in one pass and writing a dated report file you keep in the repo and attach to a pull request

@readystack/pyproject-release-gate --dir ./templates --report html --out report.html

One hour of a senior Python developer's time costs more than the licence, in any market that publishes to PyPI — and without this the review has to happen by hand at every release.

Use from an AI agent (MCP)

Claude Code · Cursor · Windsurf · any MCP client - add to your MCP config:

{ "mcpServers": { "pyproject-release-gate": { "command": "npx", "args": ["-y", "@readystack/pyproject-release-gate", "--mcp"] } } }

Tools: check_text and check_file (free) · check_dir (licence). The agent gets every finding with the line number.

Use in CI

- name: pyproject.toml Release Gate (PEP 639)
  run: npx -y @readystack/pyproject-release-gate --dir . --ci

(container: docker run --rm -v "$PWD:/work" getreadystack/pyproject-release-gate --dir /work --ci)

The folder sweep, reports and CI mode need one licence — one payment, no subscription. Set READYSTACK_LICENSE=<key> or run --license <key> once.

Get a licence

Install (PyPI)

pip install readystack-pyproject-release-gate
pyproject-release-gate --help