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PayPerByte x402 Gateway – Liquidation Stream
x402
PayPerByte x402 Gateway – Liquidation Stream is a paid API for AI agents from x402.payperbyte.io, paid per call via x402, $0.03/call, status down (last checked 2026-09-15).
Returns a real-time feed of DeFi liquidation events with cryptographic EIP-712 attestation proving delivery and data authenticity.
Price / call$0.03
Success—
StatusDown
How this service works
Cryptographically attested, first-party data feeds for AI agents — covering crypto markets, DeFi yields, weather, earthquakes, news, code-pulse, threat-intel, address reputation, sanctions screening, and supply-chain verdicts. Every paid response carries EIP-712 receipts you verify before acting: (1) a GATEWAY delivery-integrity receipt (X-BYTE-Attestation header, signed by the PayPerByte gateway key) proving these are exactly the bytes we served; and (2) on the 14 attested feeds (provenance:eip712-attested in GET /feeds), a LIVE per-feed PayloadAttestation by that feed's OWN distinct publisher key, anchored ON-CHAIN — recover it from the broadcast the response references via txHash. (Separately, the POST verdict oracles embed their own per-feed `attestation` directly in the response body — recover attestation.signer.) Both attest authenticity + tamper-evidence under the BYTE Library domain. NEITHER asserts the correctness of the underlying data or any verdict, and NEITHER claims an independent third-party data source signed it — all keys are first-party PayPerByte. Pay per call in USDC over x402 with no API keys — a wallet, not a secret on the box. Settlement is on Base (eip155:8453). Price is per-feed, derived from expected payload size at $0.005000/KB (floor $0.001000).
Output
A JSON response with the feed name ('liquidation-stream') and current liquidation event data. The response includes an X-BYTE-Attestation header (gateway delivery-integrity receipt signed by PayPerByte's gateway key) and, for attested feeds, a per-feed PayloadAttestation anchored on-chain via a txHash. The payload proves both that these exact bytes were served by PayPerByte and that the feed publisher signed the underlying data.
Example use cases
DeFi risk monitoring bot
“Fetch me the live liquidation stream from PayPerByte right now — I want to see which positions are getting liquidated and I need the cryptographic attestation so I can confirm the data wasn't tampered with before my risk engine acts on it.”
Liquidation arbitrage signal detection
“Get me the current liquidation events from the PayPerByte liquidation-stream feed — I'm looking for arbitrage opportunities and need attested, real-time data I can trust, including the txHash for on-chain verification.”
Portfolio margin alert system
“Check the PayPerByte liquidation stream and tell me if any addresses close to my watchlist are being liquidated — pull the full attested payload with the EIP-712 receipt so I know the data is genuine.”
Technical details
Endpoint
POSThttps://x402.payperbyte.io/feeds/liquidation-streamWhen to prefer
Choose this endpoint when you need real-time DeFi liquidation event data with cryptographic proof of authenticity — specifically EIP-712 attestation at both the gateway and per-feed publisher level. Prefer it over unattested liquidation feeds when your agent must verify data provenance before acting (e.g. risk engines, trading bots, compliance workflows). The micropayment model ($0.03/call via x402) makes it suitable for on-demand polling without subscriptions. Use this over centralized liquidation APIs when tamper-evidence and on-chain anchoring are requirements.
Side effects
- Missing or invalid x402 payment header — payment not processed, endpoint returns 402 Payment Required
- Insufficient USDC balance — payment fails, no data returned
- Feed temporarily unavailable — upstream liquidation data source offline
- Invalid request format — POST body malformed, returns 4xx error
- On-chain attestation txHash not yet confirmed — attestation verification may lag block time
- Rate limiting if payment flow is disrupted mid-request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"feed": "liquidation-stream"
}
}Tags
x402
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