> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polymarket.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create withdrawal addresses



## OpenAPI

````yaml /api-spec/bridge-openapi.yaml post /withdraw
openapi: 3.0.3
info:
  title: Polymarket Bridge API
  version: 1.0.0
  description: HTTP API for Polymarket bridge and swap operations.
servers:
  - url: https://bridge.polymarket.com
    description: Polymarket Bridge API
security: []
tags:
  - name: Bridge
    description: Bridge and swap operations for Polymarket
paths:
  /withdraw:
    post:
      tags:
        - Bridge
      summary: Create withdrawal addresses
      parameters:
        - $ref: '#/components/parameters/BuilderCodeHeader'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/WithdrawalRequest'
            example:
              address: '0x9156dd10bea4c8d7e2d591b633d1694b1d764756'
              toChainId: '1'
              toTokenAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48'
              recipientAddr: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'
      responses:
        '201':
          description: Withdrawal addresses created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DepositResponse'
              example:
                address:
                  evm: '0x23566f8b2E82aDfCf01846E54899d110e97AC053'
                  svm: CrvTBvzryYxBHbWu2TiQpcqD5M7Le7iBKzVmEj3f36Jb
                  btc: bc1q8eau83qffxcj8ht4hsjdza3lha9r3egfqysj3g
                note: >-
                  Send funds to these addresses to bridge to your destination
                  chain and token.
        '400':
          description: Bad Request - Invalid/missing parameters or malformed X-Builder-Code
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  parameters:
    BuilderCodeHeader:
      name: X-Builder-Code
      in: header
      required: false
      description: >
        Optional builder code (bytes32 hex) attributing this request to your
        integration so transfer issues can be traced to your app. Omitting it
        still succeeds but returns a `missing_builder_code` warning; a malformed
        code returns 400. Get your code at
        https://polymarket.com/settings?tab=builder
      schema:
        type: string
        pattern: ^0x[a-fA-F0-9]{64}$
        example: '0x00000000000000000000000000000000000000000000000000000000abcd1234'
  schemas:
    WithdrawalRequest:
      type: object
      required:
        - address
        - toChainId
        - toTokenAddress
        - recipientAddr
      properties:
        address:
          $ref: '#/components/schemas/Address'
          description: Source Polymarket wallet address on Polygon
        toChainId:
          type: string
          description: >-
            Destination chain ID (e.g., "1" for Ethereum, "8453" for Base,
            "1151111081099710" for Solana)
          example: '1'
        toTokenAddress:
          type: string
          description: Destination token contract address
          example: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48'
        recipientAddr:
          type: string
          description: Destination wallet address where funds will be sent
          example: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045'
    DepositResponse:
      type: object
      properties:
        address:
          type: object
          description: Bridge addresses for different blockchain networks
          properties:
            evm:
              type: string
              description: >-
                EVM-compatible bridge address (Ethereum, Polygon, Arbitrum,
                Base, etc.)
              example: '0x23566f8b2E82aDfCf01846E54899d110e97AC053'
            svm:
              type: string
              description: Solana Virtual Machine bridge address
              example: CrvTBvzryYxBHbWu2TiQpcqD5M7Le7iBKzVmEj3f36Jb
            btc:
              type: string
              description: Bitcoin bridge address
              example: bc1q8eau83qffxcj8ht4hsjdza3lha9r3egfqysj3g
        note:
          type: string
          description: Additional information about the bridge addresses
          example: >-
            Only certain chains and tokens are supported. See /supported-assets
            for details.
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
      required:
        - error
    Address:
      type: string
      description: Ethereum address (0x-prefixed, 40 hex chars)
      pattern: ^0x[a-fA-F0-9]{40}$
      example: '0x56687bf447db6ffa42ffe2204a05edaa20f55839'

````