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Cross-Protocol Receipt
x402
Cross-Protocol Receipt is a paid API for AI agents from phion.systems, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-12).
Bundles protocol receipt commitments across multiple protocols into a single auditable, consistent receipt artifact
Price / call$0.004
Success—
StatusUnknown
How this service works
Bind consistent protocol receipt commitments into one auditable bundle
Output
A signed, auditable bundle that binds together protocol receipt commitments from multiple protocols into a single consistent artifact, suitable for compliance review, dispute resolution, or portable record-keeping.
Example use cases
Multi-protocol agent payment audit
“I just completed a transaction involving both x402 payments and A2A agent handoffs — can you bundle all the protocol receipts into one auditable cross-protocol receipt so I have a single record to review?”
Agent commerce journey documentation
“My agent pipeline touched three different protocols during this commerce journey. Combine all the commitment receipts into one consistent bundle I can store as a portable audit artifact.”
Cross-protocol compliance packaging
“I need to produce a unified receipt that binds together all the protocol-level commitments from today's agent run — including payments, task handoffs, and policy checks — into one signed auditable package for our compliance team.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/trust/cross-protocol-receipt?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent workflow spans multiple protocols (e.g. x402 payments, A2A handoffs, MCP interactions) and you need a single, authoritative, tamper-evident receipt that captures all protocol-level commitments in one auditable artifact — especially for compliance, dispute resolution, or portable record-keeping across agent systems.
Side effects
- Missing or malformed input receipt data returns a validation error
- Incompatible protocol receipt formats may cause binding failure
- Incomplete commitment data results in a partial or rejected bundle
- Service unavailability returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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