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JOULE Compute AI Inference
x402
JOULE Compute AI Inference is a paid API for AI agents from compute.lumenbro.com, paid per call via x402, $0.002105/call, status unknown (last checked 2026-09-14).
Runs AI chat completions via POST against an OpenAI-compatible endpoint supporting 7 available models
Price / call$0.002105
Success—
StatusUnknown
How this service works
AI inference (7 models available)
Output
Returns an OpenAI-compatible chat completion object with the assistant's reply text, the finish reason (e.g. 'stop'), an index, and token usage stats (prompt tokens, completion tokens, total tokens), all under a unique completion ID.
Example use cases
Summarize customer support ticket
“Use JOULE Compute to send this support ticket to one of the available models and give me a concise summary of the issue and suggested resolution: 'Customer says their order #48291 arrived damaged and they want a replacement or refund, they've been waiting 3 weeks already.'”
Generate product description copy
“Using JOULE Compute's chat completions endpoint, ask an available model to write a compelling 3-sentence product description for a wireless noise-cancelling headphone targeting remote workers, and return what it comes up with.”
Classify user intent from message
“Send this user message to a JOULE Compute model and have it classify the intent as one of: purchase, refund, technical support, or general inquiry — just return the label and a one-line reason. Message: 'Hey, my app keeps crashing every time I try to log in, what do I do?'”
Technical details
Endpoint
POSThttps://compute.lumenbro.com/api/v1/chat/completionsWhen to prefer
Choose this endpoint when you need a pay-per-call, OpenAI-compatible AI chat completions API with micro-payment billing via x402/USDC, particularly when integrating with x402-aware agents or pipelines that handle on-chain payments and need access to 7 hosted models without subscription overhead.
Side effects
- Invalid or missing model name returns 400 or model-not-found error
- Payment not included or insufficient USDC balance results in 402 Payment Required
- Malformed messages array causes 400 Bad Request
- Rate limiting or capacity issues may return 429 Too Many Requests
- Unsupported model among the 7 available returns an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Model ID for inference |
| stream | boolean | Enable SSE streaming (optional) |
| messages | array | Chat messages in OpenAI format |
| max_tokens | number | Maximum output tokens (optional) |
| temperature | number | Sampling temperature 0-2 (optional) |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "chatcmpl-abc123",
"usage": {
"total_tokens": 18,
"prompt_tokens": 10,
"completion_tokens": 8
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hello! How can I help?"
},
"finish_reason": "stop"
}
]
}
}Tags
x402
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