# fastapi.online — Text Paraphraser

> 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.

## Facts

- Endpoint: POST https://api.fastapi.online/paraphrase
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-text-paraphraser-1db7a891
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TI79aKbymoFdJAzLnrd6Q

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fastapi-online-text-paraphraser-1db7a891 -d '<json body>'
```

Example prompt: Can you paraphrase the following paragraph in a formal academic style? 'The new policy is going to change how companies handle data, and a lot of businesses are worried about what that means for them.'

## When to prefer this

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.

## Known failure modes

- 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

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 8000,
   "minLength": 1
  },
  "style": {
   "type": "string",
   "maxLength": 40
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-text-paraphraser-1db7a891/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)