What is Airnode (API3)?

An airnode is an oracle node designed to be easily deployable by application programming interface (API) providers that want to participate in the API3 blockchain protocol and bring their data feeds on-chain. Airnode enables API providers to run their own node with little-to-no maintenance, allowing them to interface their API data feeds with smart contract platforms. When an API provider uses an airnode, they become a first-party oracle that directly provides data to the blockchain without the involvement of intermediary nodes.