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Chainlink Oracle Freshness Probe
x402
Chainlink Oracle Freshness Probe is a paid API for AI agents from meryol-agenticmarket-x402.hf.space, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Probes a Chainlink oracle feed on EVM chains via eth_call to latestRoundData(), returning staleness, scaled answer, and a safety flag for lending/AMM agents
Price / call$0.002
Success—
StatusUnknown
How this service works
Pre-execution oracle staleness check: direct eth_call to a Chainlink aggregator's latestRoundData(). feed = 0x-address OR alias (eth-usd, btc-usd, usdc-usd). Returns scaled answer, updated_at, staleness vs the feed's real heartbeat, and is_safe_to_use. Call before borrows or oracle-dependent execution. Chains: ethereum, base, arbitrum, optimism.
Output
Returns feed description, decimals, scaled price answer, updated_at timestamp, staleness in seconds since last update, and an is_safe_to_use boolean indicating whether the oracle data is fresh enough to act on.
Example use cases
Example prompt
“Before I trigger this borrow on Arbitrum, can you check whether the Chainlink ETH/USD feed at 0x639Fe6ab55C921f74e7fac1ee960C0B6293ba612 is fresh and safe to use — give me the staleness in seconds and whether it's safe?”
Technical details
Endpoint
GEThttps://meryol-agenticmarket-x402.hf.space/oracle/freshness/:chain/:feedWhen to prefer
Use this endpoint when an AI agent or DeFi protocol needs to verify Chainlink oracle freshness before executing any oracle-dependent action such as borrowing, liquidating, or swapping on Ethereum, Base, Arbitrum, or Optimism. Prefer this over generic RPC calls when you need a structured staleness judgment (is_safe_to_use boolean) rather than raw on-chain data.
Side effects
- Invalid feed address format (not a valid 0x EVM address) — 400 error
- Unsupported chain name (not one of ethereum/base/arbitrum/optimism) — 400 or validation error
- Feed address does not correspond to a Chainlink oracle on the specified chain — RPC call failure or null response
- RPC unavailable for the target chain — upstream timeout or 503
- Payment not provided or insufficient — 402 Payment Required
Input
{
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"feed": "0x639Fe6ab55C921f74e7fac1ee960C0B6293ba612",
"chain": "ethereum"
},
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"feed": "0x639fe6ab55c921f74e7fac1ee960c0b6293ba612",
"chain": "ethereum",
"notes": [
"feed_read_failed"
],
"decimals": null,
"answer_raw": null,
"description": null,
"answer_scaled": null,
"updated_at_ts": null,
"is_safe_to_use": false,
"staleness_seconds": null
}Tags
x402
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