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SYNTHORA Inference Router
x402
SYNTHORA Inference Router is a paid API for AI agents from inference.hergertsynthora.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Pay-per-prompt LLM inference using a sovereign constitution-tuned SYNTHORA-Qwen model with Ed25519-signed outputs, no API key required.
Price / call$0.02
Success—
StatusUnknown
How this service works
SYNTHORA Inference Router: pay-per-prompt LLM inference, no API keys to manage. Sovereign constitution-tuned SYNTHORA-Qwen model, local, Ed25519-signed output. POST {"prompt":"...","system":"...","max_tokens":200}.
Output
Returns an LLM-generated text completion from the SYNTHORA-Qwen model, cryptographically signed with Ed25519, verifiable for authenticity. The response reflects the prompt and optional system prompt, truncated at the specified max_tokens limit.
Example use cases
Example prompt
“Ask the SYNTHORA-Qwen model to write a short professional bio for a software engineer named Alex Chen who specializes in distributed systems, using the system prompt 'You are a concise professional copywriter' and limit the response to 150 tokens.”
Technical details
Endpoint
POSThttps://inference.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need LLM inference without managing API keys or OAuth flows, want cryptographically verifiable (Ed25519-signed) AI outputs, are comfortable with x402 pay-per-prompt micropayments in USDC, or specifically need the SYNTHORA constitution-tuned Qwen model's behavior rather than a generic hosted LLM.
Side effects
- Payment not received or insufficient USDC balance — 402 Payment Required
- Prompt or system field missing or malformed JSON — 400 Bad Request
- Model inference timeout for very long prompts — 504 Gateway Timeout
- max_tokens value out of acceptable range — 400 validation error
- Service unavailable or model overloaded — 503 Service Unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| prompt | string | The prompt to run |
| system | string | Optional system prompt |
| max_tokens | integer | Max output tokens (default 400) |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"ok",
"niche"
],
"properties": {
"ok": {
"type": "boolean"
},
"error": {
"type": "string"
},
"niche": {
"type": "string"
},
"result": {
"type": "object",
"properties": {
"note": {
"type": "string"
},
"text": {
"type": "string"
},
"tier": {
"type": "string"
},
"brain": {
"type": "string"
},
"model": {
"type": "string"
},
"latency_ms": {
"type": "number"
},
"price_usdc": {
"type": "number"
}
}
},
"receipt": {
"type": "object"
}
}
},
"example": {
"ok": true,
"niche": "inference",
"result": {
"text": "x402 is an HTTP-native micropayment protocol…",
"signed": "ed25519"
}
}
}Tags
x402
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