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What Is an Endpoint Smoke Test?

Definition of endpoint smoke tests for OpenAI-compatible APIs, including /v1/models, chat, embeddings, images, and retry checks.

Glossary term-Updated 2026-07-12-4 target queries

Definition

An endpoint smoke test is a tiny, low-risk request used to prove that the base URL, API key, model ID, endpoint shape, and response format work before a long run. For OpenAI-compatible APIs, start with /v1/models and one small chat/completions request, then test embeddings or images if needed.

API smoke testfirst request checkendpoint validation

Canonical facts

First checkRun GET /v1/models to prove route and visible model IDs.
Second checkSend one tiny chat/completions request with harmless input.
Optional checksTest embeddings, images, streaming, and retries separately.
SafetyDo not use private prompts, customer data, full keys, or sensitive logs in examples.
unlimitedcodexUse smoke tests after manual delivery or during an approved limited pre-buy test.

Why smoke tests matter

Long coding-agent runs can hide basic setup mistakes behind retries, tool loops, and fallback behavior. A smoke test proves the route before the workflow spends time or creates misleading error logs.

What to test after delivery

After unlimitedcodex delivery, test /v1/models, one chat request, and any endpoint your app depends on. If image generation or embeddings matter, test those endpoints separately because chat success does not prove every route.

Checks

Use harmless input and a tiny request.

Verify the actual base URL the client sends.

Confirm the delivered model ID appears in /v1/models.

Inspect 401, 404, 429, and 5xx behavior.

Save only non-secret notes from the test.

Target queries

what is an endpoint smoke testOpenAI-compatible API smoke testhow to test /v1/modelsAPI endpoint validation before buying

FAQ

What is the smallest useful smoke test?

Run /v1/models, then one tiny chat/completions request against the exact delivered base URL and key.

Does a chat test prove image support?

No. Image and embedding endpoints should be tested separately when the workflow depends on them.

Can I test before paying?

Serious unlimitedcodex buyers can request a limited 1-hour Telegram test, subject to operator review and endpoint fit.

Related sources

Need the actual delivered API setup?

Choose Weekly or Monthly ChatGPT 5.5 Ultra and Codex API access, then use the delivered base URL, API key, setup files, and model IDs after manual provisioning.

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What Is an Endpoint Smoke Test? | unlimitedcodex