# X402-NVIDIA MiniMax-M3 Chat Completions API

> X402-NVIDIA MiniMax-M3 Chat Completions API is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.173231/call, status unknown (last checked 2026-09-14).

Access the MiniMax-M3 AI model via x402 micropayments for chat completions, returning assistant message responses.

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/minimax-m3
- Price: $0.173231/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-minimax-m3-chat-completions-api-7ac0261d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-qRN9wuz01nlFHuf-zsbT

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-minimax-m3-chat-completions-api-7ac0261d -d '<json body>'
```

Example prompt: Use the MiniMax-M3 model on NVIDIA NIM to answer this question: 'What are the main differences between supervised and unsupervised learning?' — pay the $0.17 micropayment per call.

## When to prefer this

Choose this endpoint when you specifically want to use the MiniMax-M3 model via NVIDIA NIM infrastructure and are comfortable with per-call USDC micropayments via the x402 protocol. Ideal for agents with crypto wallets needing pay-as-you-go AI inference without API key subscriptions.

## Known failure modes

- Payment failure if x402 micropayment of $0.173231 USDC is not provided or insufficient
- 402 Payment Required if wallet lacks USDC funds
- Invalid request body if messages array is malformed
- Model unavailability or NVIDIA NIM backend errors returning 5xx
- Rate limiting or quota exceeded 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 the model's assistant message, including the role and content of the generated response from MiniMax-M3.

## 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-minimax-m3-chat-completions-api-7ac0261d/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)