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The Borrow API supplies collateral to a money market and borrows against it: normalized market data, actions, and positions across every integrated protocol, at https://borrow.yield.xyz/v1 with an x-api-key header.
Borrow is not Earn’s Lending: Lending supplies an asset to earn yield through the Yield API. Borrow supplies collateral and borrows against it through the Borrow API. A Borrow supply action and a lending yield are different positions, even on the same protocol.

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How it works

  1. Discover markets with GET /v1/markets, project-scoped by default (scope=enabled).
  2. Inspect a market’s collateral and rate data before you build an action.
  3. Request an action with POST /v1/actions, such as supply or borrow.
  4. Sign each returned transaction in order and submit it.
  5. Poll the action until it settles, then track the position with GET /v1/positions.
Walk through this flow with requests in Quickstart. Borrow markets, actions, and positions are covered conceptually in Core concepts. For the request flow, see the Borrow guide; for the response objects, see Borrow objects. An embeddable Borrow widget is coming soon.

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Next steps

Core concepts

Markets, positions, and actions: the model behind every integration.

Coverage

The protocols, market types, and networks the Borrow API integrates today.

Monetization

Fee behavior on Morpho Blue markets configured for your project.