Cargo.toml Publish Gate - crates.io

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

Names every crates.io publish blocker in a Cargo.toml before the upload burns a version number.

Install

cargo-publish-gate file

Node 18+. The same 13 rules as the VS Code extension, from a terminal or CI.

Free

• Open any Cargo.toml, run the check, and read every crates.io publish blocker in it with its line number and its fix - nothing hidden, no countdown, no watermark.
• --rules lists every rule

With a licence ($29 once)

• Gates every Cargo.toml in the workspace in one pass and writes a dated pre-publish report file you keep and attach to the release pull request.

cargo-publish-gate --dir ./templates --report html --out report.html

A contract Rust engineer on the open freelance market starts near $50 an hour, and the hand check of one release manifest against the crates.io rules takes most of that hour, at every release.

Use from an AI agent (MCP)

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

{ "mcpServers": { "cargo-publish-gate": { "command": "cargo-publish-gate", "args": ["--mcp"] } } }

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

Use in CI

- name: Cargo.toml Publish Gate - crates.io
  run: pip install rulestamp-cargo-publish-gate && cargo-publish-gate --dir . --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 rulestamp-cargo-publish-gate
cargo-publish-gate --help