> ## Documentation Index
> Fetch the complete documentation index at: https://docs.b3.fun/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Coinbase onramp URL

> Creates a Coinbase Onramp buy URL and optionally returns a session token for reuse.



## OpenAPI

````yaml https://mainnet.anyspend.com/openapi.json post /onramp/coinbase/onramp-url
openapi: 3.1.0
info:
  title: AnySpend API
  version: 1.0.0
  description: >-
    API for AnySpend - handles get quote, create order, check order status, and
    more.
servers:
  - url: https://mainnet.anyspend.com
    description: Production server
security: []
tags: []
paths:
  /onramp/coinbase/onramp-url:
    post:
      tags:
        - Onramp
      summary: Create Coinbase onramp URL
      description: >-
        Creates a Coinbase Onramp buy URL and optionally returns a session token
        for reuse.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CoinbaseOnrampUrlRequest'
      responses:
        '200':
          description: Onramp URL created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CoinbaseOnrampUrlResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: false
                  message:
                    type: string
                    example: Bad request
                  statusCode:
                    type: number
                    example: 400
                required:
                  - success
                  - message
                  - statusCode
components:
  schemas:
    CoinbaseOnrampUrlRequest:
      type: object
      description: Request body to create a Coinbase onramp URL
      properties:
        presetFiatAmount:
          type: string
          description: Preset fiat amount for purchase
          example: '100'
        fiatCurrency:
          type: string
          description: Fiat currency code
          example: USD
        defaultAsset:
          type: string
          description: Default asset to purchase
          example: USDC
        defaultPaymentMethod:
          type: string
          description: Default payment method identifier
          example: CARD
        destinationAddress:
          type: string
          description: Destination wallet address
          example: '0x58241893EF1f86C9fBd8109Cd44Ea961fDb474e1'
        blockchains:
          type: array
          description: Supported blockchains for the session
          items:
            type: string
          example:
            - base
        country:
          type: string
          description: ISO country code of the end user
          example: US
        orderId:
          type: string
          description: Associated AnySpend order ID
          example: 5392f7a7-d472-4d6b-9848-bd07117fb82d
        redirectUrl:
          type: string
          description: Redirect URL after completing the purchase
          example: https://www.anyspend.com/orders
        useSessionToken:
          type: boolean
          description: Whether to create and embed a session token automatically
          default: false
      required:
        - presetFiatAmount
        - fiatCurrency
        - defaultAsset
        - defaultPaymentMethod
        - destinationAddress
        - blockchains
        - country
        - orderId
        - redirectUrl
    CoinbaseOnrampUrlResponse:
      type: object
      properties:
        success:
          type: boolean
          example: true
        message:
          type: string
          example: Onramp URL created successfully
        data:
          $ref: '#/components/schemas/CoinbaseOnrampUrlResponseData'
        statusCode:
          type: number
          example: 200
      required:
        - success
        - message
        - data
        - statusCode
    CoinbaseOnrampUrlResponseData:
      type: object
      description: Coinbase onramp URL result
      properties:
        url:
          type: string
          description: Coinbase-hosted onramp URL
          example: 'https://pay.coinbase.com/buy/select-asset?... '
        sessionToken:
          type: string
          description: Optional session token created alongside the URL
          example: token_123
      required:
        - url

````