x402-agent-suite MPP Session Create/Retrieve

Name: x402-agent-suite MPP Session Create/Retrieve
Price: 0.03 USD

x402

x402-agent-suite MPP Session Create/Retrieve is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-02).

Creates or retrieves a Multi-Payment Protocol (MPP) session on Base or Solana after x402 micropayment, returning session state, settlement info, and next steps.

Price / call$0.03

Seller volume →—

Success—

StatusUnknown

How this service works

Creates or retrieves an MPP session after payment on Base or Solana.

Output

Returns a JSON object with ok/success flags, a session object (sessionId, status, chain, agentId, expectedCalls, callsUsed, avgPricePerCallUsdc), settlement details (network, callsSettled, plannedCalls, estimatedTotalUsdc, facilitatorUrl), facilitator info with MPP docs link, a confidence score, list of checks passed, a recommendation string, a savings note, and next steps as a string array.

Example use cases

Example prompt

“Start an MPP session for my agent on Base using x402 — I expect around 50 calls at roughly $0.03 USDC each, and I need the session ID and settlement details so I can track usage.”

Technical details

Endpoint

POSThttps://x402-agent-suite-production.up.railway.app/api/mpp/session?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent needs to establish or resume a metered MPP session backed by x402 micropayments on Base or Solana, especially when you need session-level tracking of API call consumption, per-call USDC pricing, and settlement status. Prefer this over direct per-call payment when amortizing costs across many calls or when you need facilitator-backed session management.

Side effects

Payment not received or insufficient — session not created, 402 response
Invalid HTTP method (only GET/HEAD/DELETE accepted for input.method) — validation error
Unsupported chain — session creation fails with chain error
Session not found on retrieval — returns not-found or empty session
Network timeout to Base/Solana RPC — settlement status unavailable

Input

{
  "input": {
    "type": "http",
    "method": "GET",
    "queryParams": {}
  }
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "ok": true,
  "action": "open",
  "status": "ok",
  "session": {
    "chain": "solana",
    "status": "open",
    "agentId": "dexter-verifier-probe",
    "openedAt": "2026-06-01T04:30:29.729Z",
    "callsUsed": 0,
    "sessionId": "mpp_942f78cea0ca",
    "expectedCalls": 25,
    "maxBudgetUsdc": 0.75,
    "facilitatorUrl": "https://x402.dexter.cash",
    "avgPricePerCallUsdc": 0.03,
    "estimatedSavingsUsdc": 0.715
  },
  "sources": [
    "mpp-session-v2",
    "dexter-facilitator"
  ],
  "success": true,
  "nextSteps": [
    "Point x402 client facilitatorUrl to https://x402.dexter.cash",
    "Use network solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp for session channel",
    "Call action:voucher before each API call in the session",
    "Call action:close when batch completes"
  ],
  "confidence": 0.9,
  "facilitator": {
    "url": "https://x402.dexter.cash",
    "mppDocs": "https://docs.dexter.cash/docs/mpp/"
  },
  "savingsNote": "Estimated savings $0.71 vs 25 per-call settlements",
  "accuracy_note": "MPP session lifecycle planner; settlement happens client-side via facilitator.",
  "checks_passed": [
    "mpp_session",
    "action_open",
    "session_state"
  ],
  "recommendation": "Use MPP session for this workload"
}

Schema · Response

{
  "type": "json",
  "example": {
    "ok": true,
    "session": {
      "status": "open",
      "sessionId": "mpp_example"
    }
  }
}

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