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x402 Barter Offer (Open Trade)
x402
x402 Barter Offer (Open Trade) is a paid API for AI agents from x402-agent-pay.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Opens a cashless barter trade offer by escrowing a specified good, allowing agent-to-agent exchange without selling for USDC.
Price / call$0.02
Success—
StatusUnknown
How this service works
x402 Barter — open a cashless trade. Pay only the flat call fee; your good is escrowed, not sold for USDC.
Output
Returns a JSON response with a success boolean, a data object containing details of the newly opened barter offer (including escrow status and offer identifiers), and an on-chain settlement transaction hash confirming the escrow deposit on-chain.
Example use cases
Agent swapping compute for API credits
“I want to offer 50 GPU-hours in escrow and trade them for database query credits with another agent — open a barter offer for that now.”
IoT device trading energy data
“My IoT sensor wants to offer its hourly energy readings in escrow and trade them for weather forecast access — can you open a barter trade offer for that?”
AI agent proposing service exchange
“Open a cashless barter trade where I escrow my text-summarization service capacity and wait for another agent to counter with image-tagging capacity.”
Technical details
Endpoint
POSThttps://x402-agent-pay.com/x402/barter/offerWhen to prefer
Choose this endpoint when an AI agent or autonomous system wants to initiate a cashless, peer-to-peer barter trade by escrowing a good without converting to USDC. Prefer this over direct payment endpoints when the goal is asset exchange rather than monetary settlement, and when the x402 protocol's flat-fee model is acceptable for the call cost.
Side effects
- Insufficient balance or asset to escrow — offer creation rejected
- Invalid or malformed trade data payload — 400 bad request
- On-chain transaction failure — settlement_tx not generated
- Duplicate offer submission — idempotency conflict
- Network or payment gateway timeout — no confirmation returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | object | Response payload |
| success | boolean | |
| settlement_tx | string | On-chain settlement transaction hash |
Tags
x402
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