# Nova AI Inference API

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

Pay-per-call AI chat and inference endpoint supporting conversation, reasoning, translation, and analysis, billed at $0.05 USDC per call on Base.

## Facts

- Endpoint: POST https://noa.orbonomy.xyz/api/chat
- 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-inference-api-c7782c0a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QCem-1932xtgz8wyBO6EO

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-inference-api-c7782c0a -d '<json body>'
```

Example prompt: Ask Nova to summarize the following paragraph in 3 bullet points and keep the response under 200 tokens: 'Large language models have transformed software development by enabling natural language interfaces, code generation, and automated reasoning at scale.'

## When to prefer this

Choose this endpoint when you need pay-per-call AI inference without a subscription, want to pay in USDC on Base via x402, or need a lightweight chat/reasoning/translation call in an agentic workflow where cost per call matters more than bulk pricing.

## Known failure modes

- Payment not included or insufficient USDC — returns 402 Payment Required
- Messages array missing or malformed — returns 400 Bad Request
- Temperature or max_tokens out of valid range — validation error
- Underlying model unavailable — returns 503 or error in response body
- Success field is false with no content if inference fails internally

## How this service works

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

## Output

Returns a JSON object with a success flag, the generated text content, the model used, token usage breakdown (prompt, completion, total), finish reason, and metadata including price and timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "messages"
 ],
 "properties": {
  "messages": {
   "type": "array"
  },
  "max_tokens": {
   "type": "integer"
  },
  "temperature": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "properties": {
    "id": {
     "type": "string"
    },
    "model": {
     "type": "string"
    },
    "usage": {
     "type": "object",
     "properties": {
      "total_tokens": {
       "type": "integer"
      },
      "prompt_tokens": {
       "type": "integer"
      },
      "completion_tokens": {
       "type": "integer"
      }
     }
    },
    "content": {
     "type": "string"
    },
    "finish_reason": {
     "type": "string"
    }
   }
  },
  "meta": {
   "type": "object",
   "properties": {
    "model": {
     "type": "string"
    },
    "price": {
     "type": "string"
    },
    "endpoint": {
     "type": "string"
    },
    "timestamp": {
     "type": "string"
    }
   }
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-ai-inference-api-c7782c0a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from noa.orbonomy.xyz](https://www.zero.xyz/host/noa.orbonomy.xyz/llms.txt)