# Nova AI Inference API

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

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

## Facts

- Endpoint: POST https://novva.orbonomy.xyz/api/chat
- 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-inference-api-1cc16e41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v3cJKWGGWCImZFjYy6JQC

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-1cc16e41 -d '<json body>'
```

Example prompt: Using the Nova AI inference API, send the message 'Explain quantum entanglement in simple terms' with a max of 300 tokens and a temperature of 0.7, and return the AI's response.

## When to prefer this

Choose this endpoint when you need per-call AI inference billed in USDC on Base with no subscription required, and you want a simple chat-completions-style interface with transparent token usage reporting. Ideal for agents that need on-demand LLM calls with crypto-native micropayments.

## Known failure modes

- Payment failure or insufficient USDC balance results in 402 Payment Required
- Missing required 'messages' field returns a validation error
- Invalid message array format causes a 400 Bad Request
- Model unavailability may return a 503 Service Unavailable
- Exceeding max_tokens limit may result in truncated or error response
- Network timeout if inference takes too long

## 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, finish reason, token usage breakdown (prompt, completion, total), a request ID, and metadata including price, endpoint, 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-1cc16e41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from novva.orbonomy.xyz](https://www.zero.xyz/host/novva.orbonomy.xyz/llms.txt)