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fastapi.online — Text Paraphraser
x402
fastapi.online — Text Paraphraser is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Rewrites input text in a specified style using self-hosted AI models, returning a paraphrased version of the original content.
Price / call$0.001
Success—
StatusDown
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
A paraphrased version of the submitted text, rewritten according to the specified style. The response typically contains the transformed text string reflecting the requested tone or stylistic shift.
Example use cases
Academic plagiarism avoidance
“Rewrite this passage from my notes in a formal academic style so it doesn't read as a direct copy: 'Machine learning models learn patterns from data and use those patterns to make predictions on new inputs.'”
Professional email tone adjustment
“Can you rephrase this email draft in a more professional and concise style? 'Hey, just wanted to check in and see if you had a chance to look at the proposal I sent over last week. Let me know what you think!'”
Content marketing variation
“Rewrite this product description in a friendly, casual tone for our social media post: 'Our ergonomic chair provides superior lumbar support and adjustable armrests for all-day comfort in your workspace.'”
Technical details
Endpoint
POSThttps://api.fastapi.online/paraphraseWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call paraphrasing service with no signup overhead. Ideal for agents that need on-demand text rewriting in a specific style without committing to a subscription API. Particularly useful for content variation, tone adjustment, or plagiarism avoidance at low volume. The crypto micropayment model (x402) makes it suitable for agent-driven, automated workflows where per-call billing is preferred over monthly quotas.
Side effects
- Text exceeds 8000 character limit — request rejected with validation error
- Style parameter contains unrecognized or unsupported value — may produce generic output or error
- Empty or whitespace-only text input — rejected due to minLength constraint
- Payment not included or insufficient — 402 Payment Required response
- Model inference failure or timeout — 5xx server error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | |
| style | string |
Tags
x402
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