# Nova AI Rewrite API

> Nova AI Rewrite API is a paid API for AI agents from ova.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Rewrites input text with a specified tone and style while optionally preserving the original meaning, powered by pay-per-call AI inference on Base.

## Facts

- Endpoint: POST https://ova.orbonomy.xyz/api/rewrite
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nova-ai-rewrite-api-e5d6757a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TiYS4-q098gZj0bCQqCxX

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 nova-ai-rewrite-api-e5d6757a -d '<json body>'
```

Example prompt: Rewrite this paragraph in a professional and concise style, preserving the original meaning: 'Hey so we kind of messed up the order and it's gonna be late, sorry about that, we'll try to fix it ASAP.'

## When to prefer this

Choose this endpoint when you need on-demand, pay-per-call text rewriting without a subscription — especially useful for agents that need occasional rephrasing with tone and style control and want to pay in USDC on Base via x402.

## Known failure modes

- Missing required 'text' field returns a 400 validation error
- Payment not included or insufficient USDC results in a 402 Payment Required response
- Invalid tone or style values may be ignored or cause unexpected output
- Network timeout or provider unavailability returns a 5xx error
- Empty or very short input text may yield low-quality rewrites

## How this service works

Pay-per-call AI inference. Chat, reason, translate, analyze, generate. USDC on Base.

## Output

A JSON object containing the rewritten text, the original input text, the AI model and provider used, style applied, and token usage statistics — all wrapped in a success/meta envelope.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to rewrite"
  },
  "tone": {
   "type": "string",
   "description": "Tone override"
  },
  "style": {
   "enum": [
    "professional",
    "casual",
    "academic",
    "creative",
    "concise",
    "expand",
    "simplify",
    "formal"
   ],
   "type": "string"
  },
  "preserve_meaning": {
   "type": "boolean"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "model": {
     "type": "string"
    },
    "style": {
     "type": "string"
    },
    "usage": {
     "type": "object"
    },
    "original": {
     "type": "string"
    },
    "provider": {
     "type": "string"
    },
    "rewritten": {
     "type": "string"
    }
   }
  },
  "meta": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-ai-rewrite-api-e5d6757a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ova.orbonomy.xyz](https://www.zero.xyz/host/ova.orbonomy.xyz/llms.txt)