VFault checks function names, hook names, parameters, and class methods against a database built from parsed source code. It tells you whether a function exists, whether it's deprecated, and what the correct signature looks like. It does not check business logic or code quality — just whether the API calls your AI assistant generated are real.

Yes. WordPress verification — including the CLI, the VS Code extension, and 100 API requests per day — is free with no time limit. The entire tool is MIT licensed and open source on GitHub.

A shard is a verification database for a specific ecosystem. Each shard is parsed from the actual source code of that language or framework. The WordPress shard covers WordPress core functions, hooks, and class methods. The Python shard covers the Python standard library. Shards are isolated so a function name in WordPress won't be confused with the same name in Python.

Yes. VFault is open source. Clone the repo, run the API locally, and point the VS Code extension at your own instance. Self-hosting gives you unlimited requests with no rate limiting.

Yes. Pro and Team plans are monthly subscriptions with no contract. Cancel anytime from your billing dashboard. You keep access until the end of your billing period.

Yes. Cursor uses the same extension API as VS Code. The VFault extension installs and works identically in both editors.

The API returns a 429 response with your current usage and the daily limit. The VS Code extension shows a notification. Your limits reset every 24 hours. If you need more, upgrade to a higher plan.