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Apiosk Oracle Reading – Chainlink Aggregator on Base
x402
Apiosk Oracle Reading – Chainlink Aggregator on Base is a paid API for AI agents from gateway.apiosk.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).
Reads the latest Chainlink price oracle round data on Base for a given pair or aggregator address and returns a signed JWS-HS256 receipt anchored to an on-chain block.
Price / call$0.03
Success—
StatusUnknown
How this service works
Call a Chainlink aggregator latestRoundData directly on Base and return the round with a signed JWS-HS256 receipt. Pass a known pair (ETH/USD, BTC/USD, USDC/USD, DAI/USD, LINK/USD) or an explicit aggregator address; the number is itself on-chain and re-checkable from the feed address + block in the envelope.
Output
Returns the full latestRoundData struct (roundId, answer/price, startedAt, updatedAt, answeredInRound) along with a JWS-HS256 signed receipt containing the feed address and block number, enabling independent on-chain re-verification of the returned price.
Example use cases
DeFi collateral valuation check
“What's the current BTC/USD price from the Chainlink oracle on Base? I need a signed attestation I can attach to my collateral report.”
Stablecoin peg monitoring
“Fetch the latest USDC/USD round data from the Chainlink aggregator on Base and return a signed JWS receipt so I can confirm the peg hasn't drifted.”
Custom aggregator address query
“Read the latest round from this Chainlink aggregator address 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419 on Base and give me the price and a verifiable signed envelope.”
Technical details
Endpoint
POSThttps://gateway.apiosk.com/attestations/oracle-readingWhen to prefer
Choose this endpoint when you need a cryptographically attested, on-chain verifiable price from a Chainlink oracle on Base — especially when downstream consumers need to re-verify the price independently using the included feed address and block number. Prefer over raw RPC calls when you need a signed receipt for audit trails, compliance, or agent-to-agent trust. Best for DeFi apps, collateral engines, stablecoin monitors, and any workflow requiring tamper-evident price proofs rather than a plain price lookup.
Side effects
- Unknown pair name returns an error listing supported pairs (ETH/USD, BTC/USD, USDC/USD, DAI/USD, LINK/USD)
- Invalid aggregator address returns a contract call failure or revert error
- RPC connectivity issues to Base mainnet result in a timeout or upstream error
- Malformed request body missing both pair and address returns a 400 validation error
- Payment failure via x402 protocol results in HTTP 402 before data is returned
Tags
x402
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