# X402-NVIDIA Nemotron-3 Nano Omni via Micropayment

> X402-NVIDIA Nemotron-3 Nano Omni via Micropayment is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.114268/call, status unknown (last checked 2026-09-14).

Run NVIDIA's Nemotron-3 Nano Omni model for chat completions via x402 micropayment, returning assistant message choices.

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/nemotron-3-nano-omni
- Price: $0.114268/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-nvidia-nemotron-3-nano-omni-via-micropayment-648658ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UCTkReIOS5732kGDImn3z

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 x402-nvidia-nemotron-3-nano-omni-via-micropayment-648658ee -d '<json body>'
```

Example prompt: Can you send this conversation to the NVIDIA Nemotron-3 Nano Omni model and get a response: 'Explain the difference between supervised and unsupervised learning in two sentences'? Pay the micropayment automatically.

## When to prefer this

Choose this endpoint when you need on-demand access to NVIDIA's Nemotron-3 Nano Omni model without a long-term NVIDIA API subscription, and you want to pay per call in USDC via x402 micropayments. Ideal for agents that need occasional NVIDIA NIM inference without managing API keys or committing to a paid plan.

## Known failure modes

- Payment failure or insufficient USDC balance returns 402 Payment Required
- Invalid or malformed request body returns 400 Bad Request
- Model unavailable or NVIDIA NIM backend error returns 500 or 503
- Rate limiting or quota exhaustion on the upstream NVIDIA API
- Malformed choices array in input causes parsing errors

## How this service works

Access 48+ NVIDIA NIM AI models via x402 micropayments. Chat completions, vision, safety, translation, and more.

## Output

Returns a JSON object with a 'choices' array containing one or more assistant messages, each with a role of 'assistant' and the generated content text from NVIDIA's Nemotron-3 Nano Omni model.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "choices": [
   {
    "message": {
     "role": "assistant",
     "content": "Hello!"
    }
   }
  ]
 },
 "properties": {
  "choices": {
   "type": "array",
   "description": "Model responses"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-nvidia-nemotron-3-nano-omni-via-micropayment-648658ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-nvidia.vercel.app](https://www.zero.xyz/host/x402-nvidia.vercel.app/llms.txt)