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fastapi.online — Simplify Text
x402
fastapi.online — Simplify Text is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Rewrites text into simpler, easier-to-understand language at a specified reading level
Price / call$0.001
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 a simplified version of the input text rewritten at the requested reading level, preserving the core meaning while removing complex vocabulary, long sentences, and jargon.
Example use cases
Plain-English medical explanation
“Take this medical report excerpt and rewrite it in plain English so my patient can understand it without a medical degree: 'The patient presented with idiopathic hypertrophic cardiomyopathy with associated dyspnea on exertion.' Keep it at an elementary level.”
Legal clause simplification
“This contract clause is way too dense — can you simplify it to a basic reading level so a non-lawyer can understand what they're agreeing to? Clause: 'The indemnifying party shall hold harmless and indemnify the indemnified party from any and all liabilities, damages, losses, and expenses, including reasonable attorneys' fees, arising out of or in connection with any third-party claims.'”
Accessible science writing
“I need to post this research abstract on our community blog for a general audience — can you simplify it to a conversational level? Abstract: 'Quantum entanglement enables non-local correlations between particles, violating classical Bell inequalities and enabling applications in quantum cryptography and computation.'”
Technical details
Endpoint
POSThttps://api.fastapi.online/simplify-textWhen to prefer
Choose this endpoint when you need to reduce the reading complexity of a passage for broader audiences, accessibility compliance, or plain-language communication. Prefer it over a general LLM chat endpoint when you want a dedicated, pay-per-call microservice with no signup required and consistent simplification behavior. Especially useful in automated pipelines simplifying large batches of documents at $0.001 per call.
Side effects
- Text too short (below minLength of 1 character) or too long (above 8000 characters) returns a validation error
- Invalid or unrecognized level value may result in a default level being used or an error
- Payment failure via x402 protocol blocks the request
- Model inference timeout for very long or complex texts
- Empty or whitespace-only text returns an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| level | string |
Tags
x402
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