VSIX Publish Lint

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

Find the package.json lines that stop vsce before you run the release build

Install

vsix-publish-lint file

Node 18+. The same 16 rules as the VS Code extension, from a terminal or CI.

Free

• Lints the extension manifest you have open against all 16 rules and names, line by line, the exact field to change
• --rules lists every rule

With a licence ($29 once)

• Lints every extension manifest in the workspace in one pass and writes the result out as a JSON or SARIF file you keep and run in CI

@readystack/vsix-publish-lint --dir ./templates --report html --out report.html

One hour of specialised freelance developer time runs $75-$150 on Upwork's own 2026 rate guide; a rejected publish usually costs more than one.

Use from an AI agent (MCP)

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

{ "mcpServers": { "vsix-publish-lint": { "command": "npx", "args": ["-y", "@readystack/vsix-publish-lint", "--mcp"] } } }

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

Use in CI

- name: VSIX Publish Lint
  run: npx -y @readystack/vsix-publish-lint --dir . --ci

(container: docker run --rm -v "$PWD:/work" getreadystack/vsix-publish-lint --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-vsix-publish-lint
vsix-publish-lint --help