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fastapi.online — Test Generate (Code Testing)
x402
fastapi.online — Test Generate (Code Testing) is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Generates test cases or test scaffolding for a given code snippet using a self-hosted AI model, optionally targeting a specific framework
Price / call$0.002
Success—
StatusUnknown
How this service works
Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.
Output
Returns AI-generated test code or test cases tailored to the submitted code snippet and target framework, ready to run or adapt in your test suite.
Example use cases
Auto-generate pytest unit tests
“Here's a Python utility function I just wrote — can you generate a full set of pytest unit tests for it, including edge cases? `def divide(a, b): return a / b if b != 0 else None`”
Scaffold Jest tests for a React component
“I need Jest tests generated for this React component code. Can you scaffold the test file for me? Here's the component: `function Button({ label, onClick }) { return <button onClick={onClick}>{label}</button>; }`”
Generate tests for a JavaScript class
“Can you auto-generate test cases for this JavaScript class using the Mocha framework? Here's the class: `class Stack { constructor() { this.items = []; } push(item) { this.items.push(item); } pop() { return this.items.pop(); } }`”
Technical details
Endpoint
POSThttps://api.fastapi.online/test-generate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, per-call AI-generated test scaffolding without a subscription — especially useful for one-off test generation across multiple languages and frameworks, paid with crypto at $0.002 per call with no signup required.
Side effects
- Empty or invalid code input returns an error
- Code exceeding 20,000 characters is rejected
- Unknown or unsupported framework may produce generic tests or an error
- Payment failure (402) if no valid x402 payment or API key is provided
- Model timeout on very complex code snippets
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| code | string | |
| framework | string |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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