--- updatedAt: 2026-05-14T11:27:34.000Z --- Fetch the complete documentation index at: https://docs.blockdaemon.com/llms.txt. Use this file to discover all available pages before exploring further. Append .md to any documentation page URL to get its markdown version. # Repay Process the repayment of borrowed assets to the lending protocol. Whether you’re reducing your debt or fully repaying a loan, this endpoint lets you specify the asset, amount, and repayment mode. Customizable gas parameters allow you to tailor the transaction for cost efficiency and timely execution. > 💡 **Compute Unit Value:** `255` (Fixed) # OpenAPI definition ```json { "openapi": "3.0.0", "info": { "contact": { "name": "Blockdaemon", "email": "info@blockdaemon.com" }, "description": "The Blockdaemon DeFi API provides a single interface to a multitude of DeFi projects and blockchains", "title": "Blockdaemon DeFi API", "version": "1.0.0", "x-logo": { "altText": "Blockdaemon logo", "backgroundColor": "#fafafa", "url": "https://storage.googleapis.com/blockdaemon-app-static-images/marketing/PNG/dark-logo.png" } }, "externalDocs": { "description": "Blockdaemon DeFi documentation", "url": "http://www.blockdaemon.com/api/defi" }, "servers": [ { "url": "https://svc.blockdaemon.com" } ], "components": { "securitySchemes": { "ApiKeyAuth": { "type": "apiKey", "in": "header", "name": "X-API-Key", "description": "`X-API-Key: ` header must be set to authenticate API requests.You can create tokens in the \"Configure\" tab of your API access area at https://app.blockdaemon.com." } }, "schemas": { "_lendborrow_repay_Request": { "type": "object", "properties": { "lendborrowId": { "type": "string", "description": "The unique ID to specify the lending and borrowing protocol for routing relevant queries or transactions.", "enum": [ "1000", "1003", "1005", "1200", "1208", "1203", "1204", "1205", "1206", "1207", "1100", "1300", "1302", "1400", "1401", "1402", "1403", "1404" ], "example": "1000" }, "asset": { "type": "string", "description": "Token address of the asset to repay.", "example": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2" }, "interestRateMode": { "type": "string", "description": "Interest rate mode as defined by Aave. Default is 1.", "example": "1" }, "onBehalfOf": { "type": "string", "description": "Public address of the user on whose behalf the repay action will be executed.", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "from": { "type": "string", "description": "Blockchain address of the sender. For EVM chains, use a checksummed hex address (e.g., 0xABCDEF...). This address must hold sufficient balance and will sign the transaction.", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "gas": { "type": "string", "description": "Maximum number of gas units to allocate for the transaction, as an integer string (e.g., '200000'). If omitted, gas is estimated automatically. Note: this is gas units, not wei or gwei.", "example": "100000" }, "amount": { "type": "string", "description": "Number of tokens, specified in the token's smallest denomination (base units). Do not send human-readable decimal values. Examples: 1 WETH (18 decimals) = \"1000000000000000000\"; 1 USDC (6 decimals) = \"1000000\".", "example": "1000000000000000000" }, "gasPriority": { "type": "string", "description": "Specifies the priority level for gas fees (e.g., 'low', 'medium', or 'high'), which influences the transaction speed and cost.", "example": "low" }, "enableFee": { "type": "boolean", "description": "Flag to include a basis points fee transaction alongside the main transaction when set to true.", "example": false }, "batchOption": { "type": "string", "description": "Transaction batching standard to use. Supported values: 'EIP-5792' (wallet-level batching via wallet_sendCalls) or 'EIP-7702' (EOA code delegation via batcherContract). Requires batcherContract when using EIP-7702.", "enum": [ "EIP-5792", "EIP-7702" ], "example": "EIP-5792" }, "batcherContract": { "type": "string", "description": "The EOA address of the batcher that will be used to execute the transaction when using EIP-7702 batching. If not provided, the default batcher contract for the chain will be used.", "example": "0x9c933f9d2efd76ce25b0d3dde84d3f94e78a50ca" }, "simulate": { "type": "boolean", "description": "When true, dry-runs the transaction batch via eth_simulateV1 and returns a simulate field with status and error on each transaction.", "example": false }, "market": { "type": "string", "description": "The market of the asset, such as USDC or WETH. Defaults to USDC.", "example": "USDC" }, "marketId": { "type": "string", "description": "Specifies the market Id of any market in Morpho.", "example": "0x3b3769cfca57be2eaed03fcc5299c25691b77781a1e124e7a8d520eb9a7eabb5" } }, "required": [ "asset", "interestRateMode", "onBehalfOf", "from", "amount", "marketId" ], "description": "The request body for a /defi/v1/lendborrow/repay", "example": { "lendborrowId": "1000", "asset": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "interestRateMode": "1", "onBehalfOf": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402", "from": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402", "gas": "100000", "amount": "1000000000000000000", "gasPriority": "low", "enableFee": false, "batchOption": "EIP-5792", "batcherContract": "0x9c933f9d2efd76ce25b0d3dde84d3f94e78a50ca", "simulate": false, "market": "USDC", "marketId": "0x3b3769cfca57be2eaed03fcc5299c25691b77781a1e124e7a8d520eb9a7eabb5" } } } }, "tags": [ { "name": "lendborrow", "description": "API endpoints for operations related to lending and borrowing" } ], "security": [ { "ApiKeyAuth": [] } ], "paths": { "/defi/v1/lendborrow/repay": { "post": { "tags": [ "lendborrow" ], "summary": "Repay", "description": "Process the repayment of borrowed assets to the lending protocol. Whether you’re reducing your debt or fully repaying a loan, this endpoint lets you specify the asset, amount, and repayment mode. Customizable gas parameters allow you to tailor the transaction for cost efficiency and timely execution.\n\n> 💡 \n**Compute Unit Value:** `255` (Fixed)", "operationId": "lendborrowRepay", "requestBody": { "required": true, "description": "The request body for a /defi/v1/lendborrow/repay", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/_lendborrow_repay_Request" }, "example": { "lendborrowId": "1000", "asset": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "interestRateMode": "1", "onBehalfOf": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402", "from": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402", "gas": "100000", "amount": "1000000000000000000", "gasPriority": "low", "enableFee": false, "batchOption": "EIP-5792", "batcherContract": "0x9c933f9d2efd76ce25b0d3dde84d3f94e78a50ca", "simulate": false, "market": "USDC", "marketId": "0x3b3769cfca57be2eaed03fcc5299c25691b77781a1e124e7a8d520eb9a7eabb5" } } } }, "responses": { "200": { "description": "Successful response", "content": { "application/json": { "schema": { "type": "object", "properties": { "status": { "type": "number", "description": "Numeric status code indicating success or failure of the API call", "example": 200 }, "msg": { "type": "string", "description": "Human-readable message describing the API result or error" }, "data": { "anyOf": [ { "type": "object", "properties": { "chainId": { "type": "string", "description": "Blockchain network identifier (EVM chain ID, Solana chain name, etc.)", "example": "1" }, "from": { "type": "string", "description": "Sender's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "to": { "type": "string", "description": "Recipient's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "value": { "type": "string", "description": "Amount being transferred or involved in a transaction", "example": "10" }, "gas": { "type": "string", "description": "Gas limit for the transaction", "example": "100000" }, "gasPrice": { "type": "string", "description": "Price per gas unit for the transaction", "example": "10000" }, "data": { "type": "string", "description": "Main payload object or array returned by the API", "example": "0x40e53eb7000000000000000000000000000000000000000000000000000000000016e360" }, "estimationCheck": { "oneOf": [ { "type": "string" }, { "type": "boolean" } ], "description": "Flag or value indicating transaction fee/estimate status" }, "referenceId": { "type": "string", "description": "Unique ID for tracking a specific transaction or operation", "example": "8eec8150896e4fdaa26d4d1a1338d676" }, "simulate": { "type": "object", "description": "Present when the request used `simulate: true`; eth_simulateV1 summary (omitted when simulation was not run).", "properties": { "status": { "type": "string", "enum": [ "success", "failure" ] }, "error": { "type": "string", "nullable": true, "description": "Failure reason when status is failure; null when status is success" } }, "required": [ "status", "error" ] } }, "required": [ "chainId", "from", "data", "referenceId", "estimationCheck", "to", "value" ] }, { "type": "object", "properties": { "createFeeTxn": { "type": "object", "properties": { "chainId": { "type": "string", "description": "Blockchain network identifier (EVM chain ID, Solana chain name, etc.)", "example": "1" }, "from": { "type": "string", "description": "Sender's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "to": { "type": "string", "description": "Recipient's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "value": { "type": "string", "description": "Amount being transferred or involved in a transaction", "example": "10" }, "gasPrice": { "type": "string", "description": "Price per gas unit for the transaction", "example": "10000" }, "gas": { "type": "string", "description": "Gas limit for the transaction", "example": "100000" }, "simulate": { "type": "object", "description": "Present when the request used `simulate: true` with `enableFee: true`; fee leg eth_simulateV1 summary.", "properties": { "status": { "type": "string", "enum": [ "success", "failure" ] }, "error": { "type": "string", "nullable": true, "description": "Failure reason when status is failure; null when status is success" } }, "required": [ "status", "error" ] } }, "required": [ "chainId", "from", "to", "value" ] }, "repayTxn": { "type": "object", "properties": { "chainId": { "type": "string", "description": "Blockchain network identifier (EVM chain ID, Solana chain name, etc.)", "example": "1" }, "from": { "type": "string", "description": "Sender's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "to": { "type": "string", "description": "Recipient's wallet address", "example": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402" }, "value": { "type": "string", "description": "Amount being transferred or involved in a transaction", "example": "10" }, "gas": { "type": "string", "description": "Gas limit for the transaction", "example": "100000" }, "gasPrice": { "type": "string", "description": "Price per gas unit for the transaction", "example": "10000" }, "data": { "type": "string", "description": "Main payload object or array returned by the API", "example": "0x40e53eb7000000000000000000000000000000000000000000000000000000000016e360" }, "estimationCheck": { "oneOf": [ { "type": "string" }, { "type": "boolean" } ], "description": "Flag or value indicating transaction fee/estimate status" }, "referenceId": { "type": "string", "description": "Unique ID for tracking a specific transaction or operation", "example": "8eec8150896e4fdaa26d4d1a1338d676" }, "simulate": { "type": "object", "description": "Present when the request used `simulate: true`; eth_simulateV1 summary (omitted when simulation was not run).", "properties": { "status": { "type": "string", "enum": [ "success", "failure" ] }, "error": { "type": "string", "nullable": true, "description": "Failure reason when status is failure; null when status is success" } }, "required": [ "status", "error" ] } }, "required": [ "chainId", "from", "data", "referenceId", "estimationCheck", "to", "value" ] } }, "required": [ "createFeeTxn", "repayTxn" ] }, { "type": "object", "properties": { "from": { "type": "string" }, "chainId": { "type": "string" }, "referenceId": { "type": "string" }, "methodUsed": { "type": "string", "enum": [ "EIP-5792", "EIP-7702" ] }, "calls": { "type": "array", "items": { "type": "object", "properties": { "to": { "type": "string" }, "value": { "type": "string" }, "data": { "type": "string" } }, "required": [ "to", "value", "data" ] } } }, "required": [ "from", "chainId", "referenceId", "methodUsed", "calls" ] }, { "title": "Generated schema for EIP-7702", "type": "object", "properties": { "from": { "type": "string" }, "chainId": { "type": "string" }, "referenceId": { "type": "string" }, "methodUsed": { "type": "string" }, "to": { "type": "string" }, "data": { "type": "string" }, "value": { "type": "string" }, "batcherContract": { "type": "string" } }, "required": [ "from", "chainId", "referenceId", "methodUsed", "to", "data", "value", "batcherContract" ] } ] } }, "example": { "status": 200, "msg": "success", "data": { "chainId": "1", "from": "0x63056E00436Da25BcF48A40dfBbDcc7089351006", "to": "0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2", "value": "0", "estimationCheck": true, "gas": "408298", "data": "0x573ade81000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec700000000000000000000000000000000000000000000000000000000000186a0000000000000000000000000000000000000000000000000000000000000000100000000000000000000000063056e00436da25bcf48a40dfbbdcc7089351006", "referenceId": "206365ea298a46c790b0ae51add101c3" } } } } } } }, "x-bd-cu": "255", "x-bd-cu-type": "fixed", "x-internal": false } } }, "x-readme": { "explorer-enabled": true, "proxy-enabled": true } } ```