# MiniChan — NVIDIA NIM Chat API (MiniMax-M3)

> MiniChan — NVIDIA NIM Chat API (MiniMax-M3) is a paid API for AI agents from app-minichi.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).

Sends a text prompt to a MiniMax-M3 428B MoE model via NVIDIA NIM and returns an AI-generated response, paid per-call with USDC on Base.

## Facts

- Endpoint: POST https://app-minichi.vercel.app/api/chat?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/minichan-nvidia-nim-chat-api-minimax-m3-52efa43d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yjxytCRvIOeSN8DuroYb_

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 minichan-nvidia-nim-chat-api-minimax-m3-52efa43d -d '<json body>'
```

Example prompt: Using MiniChan's MiniMax-M3 model, write me a detailed technical explanation of how transformer attention mechanisms work — keep the response under 800 tokens and use a temperature of 0.4 for precision.

## When to prefer this

Choose this endpoint when you need access to a very large (428B parameter) mixture-of-experts model for high-quality reasoning, code generation, or creative tasks, and want to pay per-call in USDC without a subscription. Prefer it over smaller hosted models when task complexity demands a frontier-scale model. Particularly useful for AI agents with crypto payment infrastructure already in place.

## Known failure modes

- Payment failure: USDC payment on Base rejected or insufficient balance, returns 402
- Prompt too long: exceeds model context window, returns error
- max_tokens out of range: invalid token count causes parameter error
- Temperature out of bounds: value outside 0-1 range may cause validation error
- Model unavailability: NVIDIA NIM backend outage causes 503 or timeout
- Empty prompt: missing required 'prompt' field causes 400 validation error

## How this service works

NVIDIA NIM MiniMax-M3 (428B MoE) powered API for AI agents. 15 multimodal endpoints — text, vision, code, reasoning, creative. Pay with USDC on Base via x402.

## Output

Returns a JSON object containing the AI-generated text response from the MiniMax-M3 428B MoE model, based on the submitted prompt and generation parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "prompt"
 ],
 "properties": {
  "prompt": {
   "type": "string",
   "description": "Your message or question"
  },
  "max_tokens": {
   "type": "number",
   "description": "Max response tokens (default 1024)"
  },
  "temperature": {
   "type": "number",
   "description": "Creativity 0-1 (default 0.7)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/minichan-nvidia-nim-chat-api-minimax-m3-52efa43d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app-minichi.vercel.app](https://www.zero.xyz/host/app-minichi.vercel.app/llms.txt)