# X402-NVIDIA Nemotron Nano 9B Chat Completions

> X402-NVIDIA Nemotron Nano 9B Chat Completions is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.102729/call, status unknown (last checked 2026-09-15).

Run inference against NVIDIA's Nemotron Nano 9B language model via x402 micropayment-gated API, returning chat completion responses

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/nemotron-nano-9b
- Price: $0.102729/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-nano-9b-chat-completions-83edc84f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PVFA40yLuuYB3bDXx8CRi

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-nano-9b-chat-completions-83edc84f -d '<json body>'
```

Example prompt: Use the NVIDIA Nemotron Nano 9B model to answer this question: 'What are the key differences between transformer and RNN architectures?' — pay per call via my x402 wallet.

## When to prefer this

Choose this endpoint when you need lightweight, cost-effective inference from NVIDIA's Nemotron Nano 9B model and want pay-per-call pricing via x402 micropayments rather than a subscription. Ideal for agents that need occasional LLM calls without committing to a monthly API plan, or when specifically targeting NVIDIA NIM infrastructure for compliance or performance reasons.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment header missing/invalid
- Model overload: NVIDIA NIM upstream unavailable or rate-limited
- Malformed input: missing or incorrectly structured messages array
- Network timeout: Vercel function cold start or upstream NIM latency
- Authentication error: x402 facilitator rejects payment credentials

## How this service works

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

## Output

A JSON object containing a choices array, where each choice includes a message with role 'assistant' and generated content text representing the model's response to the input prompt.

## 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-nano-9b-chat-completions-83edc84f/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)