AI Inference · x402 · early usage

OpenAI-compatible chat completion on NVIDIA Nemotron-3-Nano-4B (nvidia/NVIDIA-Nemotron-…

Name: OpenAI-compatible chat completion on NVIDIA Nemotron-3-Nano-4B (nvidia/NVIDIA-Nemotron-3-N
Price: 0.001 USD
Availability: InStock

by coord.taifoon.dev · discovered, not yet claimed by its owner · updated 2026-10-12

30d calls2

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

OpenAI-compatible chat completion on NVIDIA Nemotron-3-Nano-4B (nvidia/NVIDIA-Nemotron-3-Nano-4B-BF16, base weights), a small open model served from Taifoon's own GPU: short chat, text and arithmetic, not facts about recent technology. 0.001 USDC per request of up to 5,000 tokens (prompt chars/4 + max_tokens, max_tokens ≤ 700). Send { messages, max_tokens }. The answer is checked before you are charged: a failed answer is not charged.

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-12

Input example from Bazaar metadata

{
  "max_tokens": 128,
  "messages": [
    {
      "content": "What is 17 multiplied by 24? Show the calculation briefly.",
      "role": "user"
    }
  ],
  "model": "nvidia/NVIDIA-Nemotron-3-Nano-4B-BF16"
}

Output example

{
  "choices": [
    {
      "finish_reason": "stop",
      "index": 0,
      "message": {
        "content": "17 × 24 = 408 (17 × 20 = 340; 17 × 4 = 68; 340 + 68 = 408).",
        "role": "assistant"
      }
    }
  ],
  "created": 1791763200,
  "id": "chatcmpl-gpu_…",
  "model": "nvidia/NVIDIA-Nemotron-3-Nano-4B-BF16",
  "object": "chat.completion",
  "usage": {
    "completion_tokens": 14,
    "prompt_tokens": 14,
    "total_tokens": 28
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/39994.json for the price and payment options.
Pay. Call GET https://coord.taifoon.dev/v1/x402/class/inference.metered. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Arbitrum One, eip155:5042, eip155:4663, eip155:143, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.001 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Arbitrum One, eip155:5042, eip155:4663, eip155:143, Solana
Demand: 2 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.001	0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b	300s
exact	Arbitrum One eip155:42161	USDC	$0.001	0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b	300s
exact	eip155:5042 eip155:5042	0x3600000000000000000000000000000000000000	1000	0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b	300s
exact	eip155:4663 eip155:4663	0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168	1000	0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b	300s
exact	eip155:143 eip155:143	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	1000	0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.001	GvwY5YcB7NqU8DMENC5A5fGKp2SDvs4Bx3r5Yu4YHLqZ	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:4663",
    "payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
    "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "GvwY5YcB7NqU8DMENC5A5fGKp2SDvs4Bx3r5Yu4YHLqZ",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "1000",
    "amountUsd": 0.001,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "choices": {
          "items": {
            "properties": {
              "finish_reason": {
                "type": "string"
              },
              "index": {
                "type": "integer"
              },
              "message": {
                "properties": {
                  "content": {
                    "type": "string"
                  },
                  "role": {
                    "type": "string"
                  }
                },
                "type": "object"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "created": {
          "type": "integer"
        },
        "id": {
          "type": "string"
        },
        "model": {
          "type": "string"
        },
        "object": {
          "const": "chat.completion",
          "type": "string"
        },
        "usage": {
          "properties": {
            "completion_tokens": {
              "type": "integer"
            },
            "prompt_tokens": {
              "type": "integer"
            },
            "total_tokens": {
              "type": "integer"
            }
          },
          "type": "object"
        }
      },
      "required": [
        "object",
        "choices",
        "usage"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "choices": [
      {
        "finish_reason": "string",
        "index": 0,
        "message": {
          "content": "string",
          "role": "string"
        }
      }
    ],
    "created": 0,
    "id": "string",
    "model": "string",
    "object": "string",
    "usage": {
      "completion_tokens": 0,
      "prompt_tokens": 0,
      "total_tokens": 0
    }
  },
  "type": "string"
}

Examples

curl

curl "https://coord.taifoon.dev/v1/x402/class/inference.metered"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://coord.taifoon.dev/v1/x402/class/inference.metered");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://coord.taifoon.dev/v1/x402/class/inference.metered")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: coord.taifoon.dev
Endpoint: https://coord.taifoon.dev/v1/x402/class/inference.metered
Machine-readable: /resources/39994.json