# X402-NVIDIA Nemotron-3-Nano-30B Chat Completions

> X402-NVIDIA Nemotron-3-Nano-30B Chat Completions is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.065331/call, status unknown (last checked 2026-09-15).

Runs inference on NVIDIA's Nemotron-3-Nano-30B language model via x402 micropayments, returning chat completions

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/nemotron-3-nano-30b
- Price: $0.065331/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-nvidia-nemotron-3-nano-30b-chat-completions-b924d770
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RlIS1dw7pSFTEGX5__xxv

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-30b-chat-completions-b924d770 -d '<json body>'
```

Example prompt: Use the NVIDIA Nemotron-3-Nano-30B model to answer this question: 'What are the key differences between supervised and unsupervised learning?' — pay per call via x402 micropayment.

## When to prefer this

Choose this endpoint when you need NVIDIA's Nemotron-3-Nano-30B specifically, especially in agentic workflows that support x402 micropayments (pay-per-call USDC), and you want access to a capable 30B-class language model without a subscription — ideal for low-volume or cost-controlled inference scenarios.

## Known failure modes

- Payment failure if insufficient USDC balance for x402 micropayment ($0.065331 per call)
- Model unavailable or NVIDIA NIM backend timeout
- Malformed input schema causing 400 error
- Rate limiting from the Vercel-hosted proxy
- x402 payment protocol negotiation failure

## 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 the model's assistant-role message, including the generated text content from the Nemotron-3-Nano-30B 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-30b-chat-completions-b924d770/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)