> ## Documentation Index > Fetch the complete documentation index at: https://docs.rhinestone.dev/llms.txt > Use this file to discover all available pages before exploring further. # Prepare an Aave position unwind > Returns an **unsigned** `Pool.withdraw` transaction that exits an Aave position straight to the project's deposit address, so the existing deposit pipeline ingests the proceeds. Nothing is executed: the holding EOA owns the aTokens, so only it can authorise the withdraw, and the service holds no key on this path. The amount is capped server-side against Aave's full withdraw validation and is refused outright if the proceeds would fall foul of the project's deposit policy — that check happens here because this is the last point before an irreversible signature. ## OpenAPI ````yaml https://raw.githubusercontent.com/rhinestonewtf/openapi/refs/heads/main/deposit-service.json post /positions/{address}/unwind openapi: 3.1.0 info: title: Deposit Service API version: 1.0.0 description: >- Cross-chain deposit processing service with automatic token bridging and gas sponsorship servers: - url: https://v1.orchestrator.rhinestone.dev/deposit-processor security: [] paths: /positions/{address}/unwind: post: tags: - Utilities summary: Prepare an Aave position unwind description: >- Returns an **unsigned** `Pool.withdraw` transaction that exits an Aave position straight to the project's deposit address, so the existing deposit pipeline ingests the proceeds. Nothing is executed: the holding EOA owns the aTokens, so only it can authorise the withdraw, and the service holds no key on this path. The amount is capped server-side against Aave's full withdraw validation and is refused outright if the proceeds would fall foul of the project's deposit policy — that check happens here because this is the last point before an irreversible signature. parameters: - schema: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: >- The EOA holding the position. It signs and sends the returned transaction. example: '0x742d35Cc6634C0532925a3b844Bc9e7595f5bE91' required: true description: >- The EOA holding the position. It signs and sends the returned transaction. name: address in: path - schema: type: string description: API key for authentication example: your-api-key required: true description: API key for authentication name: x-api-key in: header - schema: type: string pattern: ^\d{4}-\d{2}\.[a-z0-9]+$ description: >- API version identifier (e.g. "2026-04.amazon"). Optional today, will become required in a future release. example: 2026-04.amazon required: false description: >- API version identifier (e.g. "2026-04.amazon"). Optional today, will become required in a future release. name: x-api-version in: header requestBody: content: application/json: schema: $ref: '#/components/schemas/PrepareUnwindRequestBody' responses: '200': description: Unsigned withdraw transaction content: application/json: schema: $ref: '#/components/schemas/PrepareUnwindResponse' '400': description: >- Invalid request, unauthorized, no such position, an amount above the withdrawable maximum, or proceeds the deposit policy would reject content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: >- API key lacks the required deposits scope, or the account belongs to another project content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: PrepareUnwindRequestBody: type: object properties: account: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: >- The registered deposit account the proceeds go to. The recipient is resolved from this server-side; it is never taken from the request directly. market: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: >- The Aave market's Pool address, as returned in a position's `market.address`. Required rather than inferred, because a chain can host several markets. chainId: type: integer exclusiveMinimum: 0 example: 8453 asset: type: string pattern: ^0x[a-fA-F0-9]{40}$ description: The supplied underlying token to withdraw amount: type: string pattern: ^\d+$ description: >- Base units to withdraw. Omit for the largest amount currently permitted. An amount above that maximum is rejected rather than silently reduced. example: '1000000000000000000' required: - account - market - chainId - asset PrepareUnwindResponse: type: object properties: transaction: type: object properties: to: type: string data: type: string value: type: string chainId: type: number required: - to - data - value - chainId description: >- Unsigned transaction for the holding EOA to sign and send. The backend never executes it — the EOA holds the aTokens, so only it can authorise the withdraw. amount: type: string description: Base units the transaction will withdraw isFullExit: type: boolean description: >- True when the whole position is being withdrawn, in which case the calldata uses the max-uint sentinel so interest accrued before the transaction lands is swept too. recipient: type: string description: >- The deposit address the proceeds are sent to, resolved from the registered account. Echoed so it is auditable. constraints: type: array items: type: string description: >- Why the amount is below the supplied balance, if it is. Empty for an unconstrained full exit. required: - transaction - amount - isFullExit - recipient - constraints ErrorResponse: type: object properties: error: type: string details: type: array items: type: object properties: message: type: string path: type: array items: anyOf: - type: string - type: number code: type: string required: - message required: - error ````