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x402engine HunyuanVideo3 (hy3) LLM Inference
x402
x402engine HunyuanVideo3 (hy3) LLM Inference is a paid API for AI agents from x402engine.app, paid per call via x402, $0.002335/call, status unknown (last checked 2026-10-24).
Runs inference against Tencent's HunyuanVideo3 (hy3) large language model via a pay-per-call HTTP 402 micropayment API
Price / call$0.002335
Success—
StatusUnknown
How this service works
x402engine — Tencent's efficient reasoning model with a 262k-token context window
Output
Returns an OpenAI-compatible JSON response containing the model name ('tencent/hy3'), a choices array with the assistant message (role, content, finish_reason, index), and a top-level content field with the reply text. When streaming is enabled, returns live OpenAI-compatible SSE events after payment settlement.
Example use cases
Agentic tool-calling with hy3
“Use the hy3 model to answer 'What is the weather in Tokyo?' and give it a get_weather function tool it can call to look that up — stream the response back to me.”
Multilingual content generation
“Ask the Tencent hy3 model to write a polished product description in Mandarin Chinese for our new wireless earbuds, keeping the tone professional and concise.”
On-demand LLM for cost-sensitive pipeline
“I need to run a batch of customer support questions through the hy3 model one at a time, paying only for what I use — start with this message: 'How do I reset my password?'”
Technical details
Endpoint
POSThttps://x402engine.app/api/llm/hy3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically want to run inference on Tencent's hy3 (HunyuanVideo3) language model via a trustless, pay-per-call micropayment model using USDC or USDm — ideal for agents that need no subscription, no API key management, and per-call billing on a capable Chinese-origin LLM with tool-calling and streaming support.
Side effects
- Payment not settled — HTTP 402 returned if USDC/USDm payment is not included or insufficient
- Invalid messages array — missing required 'messages' field or malformed message objects returns 400
- Unsupported parameters — model may not support all sampling params (top_k, seed, etc.); check /docs/llm-capabilities.md
- Stream timeout — SSE stream may drop if network is unstable after payment settlement
- Tool call format errors — improperly formatted tool definitions or missing tool_call_id in tool responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"model": "tencent/hy3",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hello!"
},
"finish_reason": "stop"
}
],
"content": "Hello!"
}
}Tags
x402
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