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x402 Trust Layer MPP Session Plan
x402
x402 Trust Layer MPP Session Plan is a paid API for AI agents from x402trustlayer.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-30).
Plans and closes a multi-payment protocol (MPP) session, returning settlement metadata, facilitator info, and a recommendation for aggregate USDC settlement on-chain.
Price / call$0.02
Success—
StatusUnknown
How this service works
68 paid x402 trust infrastructure APIs: guard, semantic escrow, mandate diff, certified seller network, KYM, mandates, compliance, disputes, and orchestration.
Output
Returns a session closure object with session ID, chain (e.g. polygon), calls used vs planned, estimated total USDC, facilitator URL and docs link, a savings note, recommended next action (e.g. settle aggregate USDC once on-chain), confidence score, and a list of checks passed.
Example use cases
Example prompt
“Close out my x402 MPP session 'mpp_example' for agent 'agent-mpp-usdc-test-042' and give me the settlement plan so I can do a single on-chain USDC settlement via the facilitator.”
Technical details
Endpoint
POSThttps://x402trustlayer.xyz/api/mpp/session-plan?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent has completed a series of x402 micro-payment API calls within an MPP session and needs to plan/close the session to obtain aggregate settlement metadata, facilitator URLs, and a single on-chain USDC settlement recommendation — rather than settling each call individually.
Side effects
- Invalid HTTP method (only GET/HEAD/DELETE accepted) returns 4xx validation error
- Missing required 'type' or 'method' fields returns 400 bad request
- Session not found or already settled may return empty/error response
- Payment of $0.02 USDC not received leads to 402 Payment Required
- Facilitator endpoint unavailable causes settlement metadata to be missing or stale
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"action": "close",
"status": "ok",
"session": {
"chain": "polygon",
"status": "closed",
"agentId": "agent-mpp-usdc-test-042",
"callsUsed": 0,
"sessionId": "mpp_example",
"expectedCalls": 9,
"avgPricePerCallUsdc": 0.03
},
"success": true,
"nextSteps": [
"Facilitator settles session total to payTo wallet"
],
"confidence": 0.9,
"settlement": {
"chain": "polygon",
"status": "closed",
"agentId": "agent-mpp-usdc-test-042",
"network": "eip155:137",
"sessionId": "mpp_example",
"callsSettled": 0,
"plannedCalls": 9,
"facilitatorUrl": "https://x402.dexter.cash",
"estimatedTotalUsdc": 0
},
"facilitator": {
"url": "https://x402.dexter.cash",
"mppDocs": "https://docs.dexter.cash/docs/mpp/"
},
"savingsNote": "Session closed with settlement metadata",
"checks_passed": [
"mpp_session",
"action_close",
"settlement_metadata"
],
"recommendation": "Settle aggregate USDC once on-chain via facilitator"
}
}Tags
x402
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