# Nova AI Inference API

> Nova AI Inference API is a paid API for AI agents from novav2.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 at $0.05 USDC per call on Base.

## Facts

- Endpoint: POST https://novav2.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-d7feb956
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AvVzKLsn4VzTrf5VypSvk

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-d7feb956 -d '<json body>'
```

Example prompt: Using Nova's pay-per-call AI API, send this conversation — [{'role':'user','content':'Explain quantum entanglement in simple terms'}] — with a max of 300 tokens and temperature 0.7, and pay the $0.05 USDC fee on Base.

## When to prefer this

Choose this endpoint when you need on-demand AI inference without a subscription and want to pay per call using USDC on Base via the x402 protocol. Ideal for agentic workflows that invoke LLM reasoning, translation, or generation infrequently and want granular cost control tied to crypto micro-payments.

## Known failure modes

- Payment not received or insufficient USDC balance — 402 Payment Required
- Malformed messages array — 400 Bad Request
- Model unavailable or overloaded — 503 Service Unavailable
- Invalid temperature or max_tokens values — 400 validation error
- Wallet not authorized or payment failed on Base — payment rejection error

## How this service works

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

## Output

Returns a JSON object with success flag, the generated text content, model used, token usage breakdown (prompt, completion, total tokens), finish reason, a unique response 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-d7feb956/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from novav2.orbonomy.xyz](https://www.zero.xyz/host/novav2.orbonomy.xyz/llms.txt)