Free tool
OpenAI-Compatible Endpoint Smoke Tester
Probe GET /v1/models against any base URL and grade OpenAI compatibility without storing your key.
Keys are used only for the probe and are not stored. Use a test key when possible.
Related tools
More in this category
429 Decoder
Paste a 429 response body and headers to classify rate-limit vs quota pressure and see retry guidance.
Open toolRequest Validator
Validate chat, embeddings, and image JSON payloads against unlimitedcodex OpenAI-compatible rules.
Open toolMigration Checker
Score your code for base URL configurability, auth patterns, streaming, and env hygiene before cutover.
Open toolReady for GPT-5.5 and Codex API access?
Choose Unlimited Weekly or Unlimited Monthly, complete Stripe checkout, and receive manual setup in 10 minutes to 5 hours. The full API key arrives by email, while the dashboard safely shows delivery details.