In web3 and DeFi, pledge agreements involve parties pledging crypto assets, typically in forms such as tokens or stablecoins, which act as security for a loan or obligation. These agreements provide assurance to lenders that they will have recourse to the collateral if the borrower fails to meet their obligations. The specifics of pledge agreements can vary, but they often include terms for the assessment of collateral value, rights in the event of default, and conditions for the return of pledged assets once obligations are fulfilled. Pledge agreements are crucial in establishing trust in peer-to-peer transactions on decentralized platforms.