Api3 builds data infrastructure for DeFi and for AI. Its first-party oracles deliver price feeds signed by the API providers that produce the data, and its OEV mechanism recovers the value released when a price update moves a market and returns it to the protocols that use the feed.

On top of those feeds, Api3 curates lending markets on Morpho across several networks, earning a performance fee when borrowers use them. It also builds for AI, for example AirnodeHub, where agents find, call and pay for APIs whose responses are signed by the provider.

The API3 token has a fixed supply of 200,000,000. A 2026 primary proposal ended staking emissions, removed the ability to mint and transferred ownership of the token contract to the dead address, so no more API3 can be created. Governance runs on Snapshot under api3.eth with one token, one vote. Revenue from the business buys API3 on the market every month.