Polar checkouts API

openapi: 3.0.1
info:
  title: Polar benefits checkouts API
  description: Polar is an open-source Merchant of Record (MoR) and monetization platform for developers. This document models the core organization-facing REST surface of the Polar API - products and prices, checkouts, customers, subscriptions, orders, benefits and license keys, usage meters and events, and webhooks. All requests are authenticated with a Bearer Organization Access Token. The canonical, machine-generated specification is published by Polar at https://api.polar.sh/openapi.json; this is a curated subset for the API Evangelist catalog.
  termsOfService: https://polar.sh/legal/terms
  contact:
    name: Polar Support
    email: support@polar.sh
    url: https://polar.sh/docs
  license:
    name: Apache-2.0
    url: https://github.com/polarsource/polar/blob/main/LICENSE
  version: 2026-04
servers:
- url: https://api.polar.sh/v1
  description: Production environment
- url: https://sandbox-api.polar.sh/v1
  description: Sandbox environment
security:
- oat: []
tags:
- name: checkouts
  description: Hosted checkout sessions and reusable checkout links.
paths:
  /checkouts/:
    get:
      operationId: checkouts:list
      tags:
      - checkouts
      summary: List Checkout Sessions
      responses:
        '200':
          description: A paginated list of checkout sessions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListResourceCheckout'
    post:
      operationId: checkouts:create
      tags:
      - checkouts
      summary: Create Checkout Session
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CheckoutCreate'
      responses:
        '201':
          description: The created checkout session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Checkout'
  /checkouts/{id}:
    get:
      operationId: checkouts:get
      tags:
      - checkouts
      summary: Get Checkout Session
      parameters:
      - $ref: '#/components/parameters/IdPath'
      responses:
        '200':
          description: The requested checkout session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Checkout'
  /checkout-links/:
    get:
      operationId: checkoutLinks:list
      tags:
      - checkouts
      summary: List Checkout Links
      responses:
        '200':
          description: A paginated list of checkout links.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListResourceCheckout'
    post:
      operationId: checkoutLinks:create
      tags:
      - checkouts
      summary: Create Checkout Link
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - products
              properties:
                products:
                  type: array
                  items:
                    type: string
                    format: uuid
                success_url:
                  type: string
                  nullable: true
      responses:
        '201':
          description: The created checkout link.
          content:
            application/json:
              schema:
                type: object
                additionalProperties: true
components:
  schemas:
    CheckoutCreate:
      type: object
      required:
      - products
      properties:
        products:
          type: array
          description: One or more product IDs offered in the checkout.
          items:
            type: string
            format: uuid
        customer_email:
          type: string
          nullable: true
        customer_external_id:
          type: string
          nullable: true
        success_url:
          type: string
          nullable: true
        discount_id:
          type: string
          format: uuid
          nullable: true
        metadata:
          type: object
          additionalProperties: true
    Pagination:
      type: object
      properties:
        total_count:
          type: integer
        max_page:
          type: integer
    Checkout:
      type: object
      properties:
        id:
          type: string
          format: uuid
        status:
          type: string
          enum:
          - open
          - expired
          - confirmed
          - succeeded
          - failed
        client_secret:
          type: string
        url:
          type: string
        expires_at:
          type: string
          format: date-time
        product_id:
          type: string
          format: uuid
          nullable: true
        amount:
          type: integer
          nullable: true
        currency:
          type: string
          nullable: true
        customer_email:
          type: string
          nullable: true
        success_url:
          type: string
          nullable: true
    ListResourceCheckout:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Checkout'
        pagination:
          $ref: '#/components/schemas/Pagination'
  parameters:
    IdPath:
      name: id
      in: path
      required: true
      schema:
        type: string
        format: uuid
  securitySchemes:
    oat:
      type: http
      scheme: bearer
      description: Organization Access Token used for backend, organization-scoped operations.
    pat:
      type: http
      scheme: bearer
      description: Personal Access Token scoped to a user.
    customer_session:
      type: http
      scheme: bearer
      description: Customer Session token used for customer portal endpoints.