# Nova AI Summarize Endpoint

> Nova AI Summarize Endpoint is a paid API for AI agents from nova.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Summarizes a given text into a concise output with key points, using pay-per-call AI inference paid in USDC on Base.

## Facts

- Endpoint: POST https://nova.orbonomy.xyz/api/summarize
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nova-ai-summarize-endpoint-0a0e8722
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cerKPNdaeHTSVcC93USDd

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-summarize-endpoint-0a0e8722 -d '<json body>'
```

Example prompt: Can you summarize this article for me in about 150 words and pull out the key points? Here's the text: [long article text]

## When to prefer this

Choose this endpoint when you need a pay-per-call, no-subscription text summarization with key-point extraction, paid in USDC on Base via x402. It is well-suited for agents that need on-demand summarization without managing API keys or monthly plans.

## Known failure modes

- Missing required 'text' field returns a 400 validation error
- Text too long for model context window may cause truncation or error
- Payment failure (insufficient USDC or network issue) returns 402
- Invalid 'format' value may be ignored or cause a 400 error
- Service downtime or model unavailability returns 500

## How this service works

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

## Output

Returns a JSON object with a summary string, an array of key points, the model used, token usage stats, and the output format — wrapped in a success envelope.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to summarize"
  },
  "format": {
   "type": "string"
  },
  "max_length": {
   "type": "integer",
   "description": "Target word count"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "model": {
     "type": "string"
    },
    "usage": {
     "type": "object"
    },
    "format": {
     "type": "string"
    },
    "summary": {
     "type": "string"
    },
    "key_points": {
     "type": "array",
     "items": {
      "type": "string"
     }
    }
   }
  },
  "meta": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-ai-summarize-endpoint-0a0e8722/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nova.orbonomy.xyz](https://www.zero.xyz/host/nova.orbonomy.xyz/llms.txt)