Google Gemini API Key Tester

This tester validates a Google Gemini API key by making a real authentication call to the Gemini API and listing every model your key can access alongside its context window and token limits. The key never leaves your browser — the request is fired directly to Google, not via Vulnsy. Useful for auditing leaked keys discovered during pentests, or sanity-checking a new key without writing throwaway code.

A valid key matches the format AIzaSy[A-Za-z0-9_-]{33}; if your input doesn't match, the tester rejects it locally before sending any request, saving an unnecessary API call.