# X402-NVIDIA SEED-OSS-36B Model API

> X402-NVIDIA SEED-OSS-36B Model API is a paid API for AI agents from x402-nvidia.vercel.app, paid per call via x402, $0.140517/call, status unknown (last checked 2026-09-14).

Runs inference on the NVIDIA NIM SEED-OSS-36B model via x402 micropayments, returning chat completion responses.

## Facts

- Endpoint: POST https://x402-nvidia.vercel.app/api/seed-oss-36b
- Price: $0.140517/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-seed-oss-36b-model-api-4b44d2ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2dEJpF5fdZvbzGBfbG4Y_

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-seed-oss-36b-model-api-4b44d2ff -d '<json body>'
```

Example prompt: Use the NVIDIA SEED-OSS 36B model to complete this conversation: the user asked 'Explain the difference between supervised and unsupervised learning in simple terms' — generate an assistant response using the SEED-OSS-36B NIM endpoint.

## When to prefer this

Choose this endpoint when you need access to the NVIDIA SEED-OSS-36B open source model specifically, want pay-per-call pricing via x402 USDC micropayments with no subscription required, and need a large 36B-parameter model for high-quality language generation tasks such as reasoning, coding, or detailed text synthesis.

## Known failure modes

- Insufficient USDC balance or failed x402 micropayment — payment required error
- Malformed or missing messages in request body — 400 bad request
- Model unavailable or NVIDIA NIM backend error — 503 or 500 response
- Rate limit exceeded on the vercel proxy — 429 too many requests
- Invalid input schema (e.g. non-array choices field) — validation error

## 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 a 'content' field containing the model's generated text response.

## 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-seed-oss-36b-model-api-4b44d2ff/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)