OPENAI-COMPATIBLE · BROWSER DIRECT

LLM API Tester

Call Models, Chat Completions, and Responses APIs directly from this browser. Keys, prompts, and responses do not pass through ComUtil.

Ready

Endpoint profile

Saved in this browser

Base URL Authentication

API key

Saved in this browser

Endpoint paths and custom headers

Models path Chat Completions path Responses path

Direct to target API

API

Model

Temperature Max output tokens Timeout (seconds) Stream response

Additional body JSON

Add provider-specific fields. Managed form fields cannot be overridden.

{}

{}

Browser boundary

The target provider receives the request directly. Browser extensions and scripts on this origin can still read localStorage.

CORS and local servers

Custom and localhost endpoints must allow this page origin, Authorization and Content-Type headers, and OPTIONS requests.

Inspector behavior

Unsupported Responses requests are reported as-is and are never retried through Chat Completions.