Verify LLM API checks whether the model behind your AI agent or API matches its claim. Tell a Codex agent to run verifyllmapi.com/run, or test an OpenAI- or Anthropic-compatible endpoint. It reuses the Agent’s login in fresh sessions, samples one-token outputs, and matches their distribution with public fingerprints using Jensen–Shannon distance. Credentials and raw samples stay local. The library covers 161 exact model IDs; unknown or weak matches return INCONCLUSIVE.
