# Synapse AI Text Rewriter

> Synapse AI Text Rewriter is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Rewrites or paraphrases input text with a specified tone (e.g. formal) using AI, paid per call in USDC via x402 on Base

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/ai-rewrite?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-ai-text-rewriter-e1aefe6f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DLP1ZS5bQutm9i5ozwHgc

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 synapse-ai-text-rewriter-e1aefe6f
```

Example prompt: Can you rewrite the following paragraph in a formal tone: 'Hey, just wanted to check in and see if you got my last message — let me know when you're free to chat!'

## When to prefer this

Choose this endpoint when you need a quick, pay-per-use text rewriting or tone-shifting capability with no account setup or API key — ideal for agents that need on-demand paraphrasing in a formal style via x402 micropayments on Base.

## Known failure modes

- Missing or malformed 'input' parameter returns a 400 error
- Payment failure or insufficient USDC balance causes a 402 response before processing
- Text too long or unsupported content may result in a processing error
- Network issues with the duckdns.org host may cause timeouts or 503 errors

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

A JSON object containing the original input text, the rewritten version with the requested tone applied, and a label confirming the tone used (e.g. {tone: 'formal', original: '...', rewritten: '...'})

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tone": "formal",
  "original": "...",
  "rewritten": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-ai-text-rewriter-e1aefe6f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)