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

# Create a ramp widget session for checkout



## OpenAPI

````yaml /openapi/openapi.json post /ramp/session
openapi: 3.0.2
info:
  title: AGG API
  version: 1.0.0
  description: >-
    Prediction market aggregator REST API — authentication, users, venue events,
    venue markets, orderbooks, charts, and execution workflows.
servers:
  - url: https://api.agg.market
    description: Production
  - url: https://api.staging.agg.market
    description: Staging
security: []
paths:
  /ramp/session:
    post:
      tags:
        - Ramp
      summary: Create a ramp widget session for checkout
      operationId: createRampSession
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - sourceAmount
                - sourceCurrencyCode
                - destinationCurrencyCode
                - serviceProvider
                - walletAddress
              properties:
                sourceAmount:
                  type: string
                sourceCurrencyCode:
                  type: string
                destinationCurrencyCode:
                  type: string
                serviceProvider:
                  type: string
                walletAddress:
                  type: string
                redirectUrl:
                  type: string
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                required:
                  - id
                  - token
                  - widgetUrl
                  - serviceProviderWidgetUrl
                properties:
                  id:
                    type: string
                  token:
                    type: string
                  widgetUrl:
                    type: string
                  serviceProviderWidgetUrl:
                    type: string
        '401':
          description: '401'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
        '502':
          description: '502'
          content:
            application/json:
              schema:
                type: object
                required:
                  - message
                properties:
                  message:
                    type: string
      security:
        - appId: []
components:
  securitySchemes:
    appId:
      type: apiKey
      in: header
      name: x-app-id
      description: Your application ID. Required for all app-tier and user-tier routes.

````