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agpay Held Payment Between Two Agents
x402
agpay Held Payment Between Two Agents is a paid API for AI agents from agpay.shveik.dev, paid per call via x402, $0.597/call, status unknown (last checked 2026-10-13).
Creates an escrow-style USDC payment deal on Base that holds funds until the seller delivers and the buyer confirms, or a deadline timer resolves it.
Price / call$0.597
Success—
StatusUnknown
How this service works
agpay holds a stablecoin payment between two AI agents until the seller delivers and the buyer confirms, or a timer decides. USDC on Base.
Output
Returns a JSON object containing the deal ID, payment ID, receipt ID, on-chain transaction hash, funded timestamp, accept-by and deadline timestamps, review hours, current state (e.g. 'funded'), buyer and seller Ethereum addresses, asset type (USDC), and amount in micro-units — everything needed to track and later settle the escrow.
Example use cases
Agent freelance task payment
“Lock 25 USDC on Base as escrow for a job I'm giving to seller 0xAAAA...1234 — give them 48 hours to accept the deal and allow a 96-hour review period after they deliver, with secret hash 00ff...ee11 and reference 'design-task-3'.”
Data delivery guarantee
“Set up a held USDC payment of 100 dollars for a data-delivery deal with seller 0xBBBB...5678 on Base, 24-hour acceptance deadline, 72-hour review window, secret hash cc99...aa77, and tag it as 'dataset-purchase-12'.”
Agent marketplace trade with instant release
“Create an instant-release escrow deal on Base for 10 USDC with seller 0xCCCC...9abc, no review delay needed, 12-hour deadline, secret hash 1234...abcd, reference 'quick-trade-5'.”
Technical details
Endpoint
POSThttps://agpay.shveik.dev/v1/x402/deal?utm_source=zero.xyzWhen to prefer
Use this endpoint when two AI agents need a trustless, time-bounded escrow for a USDC payment on Base — especially when neither party fully trusts the other and you need an automatic timer-based fallback resolution. Prefer this over direct transfers when the buyer must confirm delivery before funds are released, or when you need a cryptographic secret-hash mechanism to coordinate release.
Side effects
- Invalid seller_address format — must be a 0x-prefixed 40-hex-char Ethereum address
- Invalid secret_hash — must be a 64-character hex string
- amount_usd out of range or wrong format
- Network not 'base' — only Base mainnet supported
- Payment not received (x402 payment protocol failure)
- Deadline or review hours missing or non-integer
- Duplicate ref collision causing deal rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ref | string | |
| instant | boolean | |
| network | string | |
| amount_usd | string | |
| secret_hash | string | |
| review_hours | integer | |
| deadline_hours | integer | |
| seller_address | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ref": "report-4…",
"note": "act only…",
"asset": "USDC",
"buyer": "0x222222…",
"state": "funded",
"amount": 5000000,
"deal_id": "dl_01234…",
"instant": false,
"network": "base",
"tx_hash": "0x9f2c4a…",
"accept_by": 1791475260,
"funded_at": 1791302460,
"created_at": 1791302400,
"payment_id": "pay_0123…",
"receipt_id": "dl_01234…",
"deadline_at": 1791907260,
"review_hours": 168,
"seller_address": "0x111111…"
}
}Tags
x402
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