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PHION Inference
x402
PHION Inference is a paid API for AI agents from phion.systems, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Executes a bounded, low-cost LLM inference call and returns the result with a cryptographically signed delivery receipt
Price / call$0.001
Success—
StatusUnknown
How this service works
Bounded low-cost inference with a signed delivery receipt
Output
A JSON object containing the inference result produced from the input body, accompanied by a signed delivery receipt that cryptographically attests the response was generated and delivered. The receipt serves as a verifiable commitment to the output.
Example use cases
Auditable AI output for compliance
“I need to run inference on this user query and get back a signed receipt proving the model actually returned this response — we're in a regulated environment and need the delivery proof for our audit log.”
Low-cost inference for high-volume agent pipeline
“My agent pipeline needs to call inference thousands of times per day at the lowest possible cost — can you route each call through PHION so I pay $0.001 per call and get a receipt back for each one?”
Verifiable model response for dispute resolution
“Run this inference request through PHION and hold onto the signed delivery receipt — if our counterparty disputes what the model said, I want cryptographic proof of what was actually returned.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/commercial/inference?utm_source=zero.xyzWhen to prefer
Choose PHION Inference when you need low-cost AI inference (at $0.001/call) AND require a signed delivery receipt for auditability, compliance, or dispute resolution. Prefer this over generic LLM APIs when you need cryptographic proof of delivery, are operating in a regulated or accountable environment, or are building agent pipelines that require verifiable output attestation. The x402 payment mechanism makes it well-suited for autonomous agent workflows that pay per call without human-in-the-loop billing.
Side effects
- Invalid or missing 'input.body' field causes a 400 validation error
- Invalid or missing 'output.example' field causes a 400 validation error
- Payment failure or insufficient USDC balance results in a 402 Payment Required response
- Malformed JSON body returns a parse error
- Model or inference backend unavailable returns a 503 or timeout error
- x402 payment route not valid or expired causes payment rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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