Dapp storePolygonDeFi toolsDecentralized oracles
API3
API3
Alchemy CustomerDecentralized oracles

API3

API3 is a first-party oracle solution that provides data feeds and OEV rewards for DeFi projects across multiple chains.

Polygon Logo
BNB Chain Logo
Avalanche Logo
Free
This link will take you to a third-party site not owned or operated by Alchemy.

What is API3?

API3 is a first-party oracle solution launched in December 2020 that provides data feeds and Oracle Extractable Value (OEV) rewards for DeFi projects. The platform offers over 100 data feeds across multiple chains, enabling DeFi protocols to receive OEV rewards wherever they build. API3's proprietary Airnode technology allows API owners to turn regular APIs into blockchain-compatible data sources that can be easily integrated into Web3 applications. Developers can use APIs to connect their dapps to real-world data streams.

Track wallet activity with our Transfers API
Get your API key

Best Decentralized oracles

Discover more web3 applications and developer tools.

See all dapps

Developer resources from Alchemy

Dapp store background image

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.
Get your API key