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Gambit Nemotron Chat — x402 USDC on Base
x402
Gambit Nemotron Chat — x402 USDC on Base is a paid API for AI agents from gambit.barrioenergy.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).
Send a chat message to NVIDIA's Nemotron-3-Super 120B model via Gambit's GPU shop, paying $0.08 USDC per call using the x402 protocol on Base.
Price / call$0.08
Success—
StatusUnknown
How this service works
Gambit GPU shop. Humans: /signup ($1 credit), X-API-Key on /v1/*, QR Lightning top-up. Bots: L402 Lightning (LIVE) on /l402/*, x402 USDC on Base on /x402/*, or POST /v1/register ($0) then POST /v1/topup/lightning. Handwritten letter POST /x402/letter at $25.00 USDC. Funnel https://gambit.barrioenergy.com. Free probe GET|POST /x402/models.
Output
Returns a JSON object with the model name ('nemotron-3-super:120b-a12b') and an assistant message object containing the role ('assistant') and generated text content.
Example use cases
Crypto-native AI coding assistant
“Use the Nemotron 120B model on Gambit to write me a Python function that parses JSON from a REST API response and handles missing keys gracefully — keep it under 300 tokens.”
Research summarization agent
“Ask Gambit's Nemotron model to summarize the key arguments for and against central bank digital currencies in a concise bullet list, max 512 tokens.”
Automated content drafting pipeline
“Send this system prompt and user message to the Nemotron-3-Super model on Gambit and draft a professional product description for a noise-cancelling headphone for e-commerce, up to 600 tokens.”
Technical details
Endpoint
POSThttps://gambit.barrioenergy.com/x402/chat/nemotronWhen to prefer
Choose this endpoint when you need inference from NVIDIA's Nemotron-3-Super 120B model specifically, want to pay per-request in USDC on Base without a subscription, are building a crypto-native or x402-compatible agent pipeline, or need a powerful open-weight model accessible via Web3 payment rails rather than a centralized API key subscription.
Side effects
- Insufficient USDC balance causes 402 Payment Required with payment instructions
- Malformed messages array (missing required 'role' or 'content' fields) returns 400 Bad Request
- max_tokens value too large for context window returns error
- Model overloaded or GPU unavailable returns 503 Service Unavailable
- Invalid x402 payment header or wrong chain causes payment rejection
- Empty messages array may return empty or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| messages | array | |
| max_tokens | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"model": "nemotron-3-super:120b-a12b",
"message": {
"role": "assistant",
"content": "Hi."
}
}
}Tags
x402
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