API3 gives developers a way to inspect oracle provenance in its Market interface. Its integration guide explains how hovering over a provider’s logo displays source verification, while the Verified link opens the provider’s signed-data service. That creates a concrete starting point for checking who supplies a feed before connecting an application. docs.api3.org
The documented checks cover provider identity, certification of signing keys and access to signed data through the provider itself. API3 feeds combine individual readings using an on-chain median. These checks expose the sources behind a feed. API3’s security documentation also directs developers to assess contract implementation and privileged accounts. docs.api3.org; docs.api3.org
For deployment, the contract guide directs teams to confirm both an active Market feed and a contract at the expected proxy address. It also specifies 18 decimal places for feed values and explains that the returned timestamp reflects provider-reported time, rather than the update’s block time. Those distinctions give reviewers specific integration assumptions to test. docs.api3.org
API3 also publishes its control model: a four-of-eight technical-team multisig can upgrade the reader proxy, while a separate four-of-four multisig approves provider configurations. The security guide links audit material and describes a 0–15-second delay in the base feed used for OEV. Teams can use these disclosures to assess whether the feed’s operation fits their application. docs.api3.org