Free tools

20 tools for OpenAI-compatible API access

Calculators, analyzers, generators, and interactive planners — all client-side except the optional endpoint smoke tester.

Calculators

Compare Unlimited Weekly and Monthly packages for your project timeline and get a signup link.

Estimate OpenAI monthly spend and compare it to flat unlimitedcodex weekly or monthly packages.

Estimate engineering cost to self-build keys, quotas, logs, and billing vs subscribing to unlimitedcodex.

Convert MAU and prompt assumptions into monthly tokens, requests, and quota threshold warnings.

Model net savings from swapping OpenAI for unlimitedcodex flat pricing including migration labor.

Estimate concurrent connection pressure and recommend Weekly vs Monthly from load inputs.

Paste a 429 response body and headers to classify rate-limit vs quota pressure and see retry guidance.

Validate chat, embeddings, and image JSON payloads against unlimitedcodex OpenAI-compatible rules.

Score your code for base URL configurability, auth patterns, streaming, and env hygiene before cutover.

Grade API key hygiene from prefix-only inputs — scopes, env vars, IP allowlists, and rotation policy.

Probe GET /v1/models against any base URL and grade OpenAI compatibility without storing your key.

Generate or transform OpenAI SDK snippets to unlimitedcodex base URL, keys, and scopes.

Select workloads and output least-privilege scopes, .env.example, and a rotation checklist.

Build chat completion JSON visually and export cURL, JavaScript, or Python snippets.

Generate Node or Python webhook handlers with signature verification for unlimitedcodex events.

Generate .env.example blocks from selected endpoints, environment, and webhook needs.

Tune backoff and retry settings to see simulated outcomes and copy a retry handler snippet.

Answer six questions to get a Weekly or Monthly recommendation with a pre-filled signup link.

Side-by-side diff view when transforming OpenAI SDK code to unlimitedcodex with model mapping.

Plan backoff settings and quota monitoring checklist from expected RPS and team size.