openapi: 3.1.0
info:
  title: FastSpring Accounts Subscriptions API
  description: REST API for FastSpring's ecommerce / merchant-of-record platform. Covers orders, subscriptions, products, coupons, accounts (customers), sessions (checkout), invoices, quotes, returns, events (webhook history), data jobs (reports), and webhook key rotation. Authenticated via HTTP Basic credentials issued from the FastSpring App Dashboard under Integrations > API Credentials. Rate limited to 250 calls per minute per IP. Requires TLS 1.2+, UTF-8 encoding, a User-Agent header, and Content-Type application/json on writes.
  version: 1.0.0
  contact:
    name: FastSpring Developer Hub
    url: https://developer.fastspring.com
servers:
- url: https://api.fastspring.com
  description: FastSpring production API
security:
- BasicAuth: []
tags:
- name: Subscriptions
paths:
  /subscriptions:
    get:
      tags:
      - Subscriptions
      summary: List subscription identifiers
      responses:
        '200':
          description: Subscriptions
  /subscriptions/{subscription_id}:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    get:
      tags:
      - Subscriptions
      summary: Retrieve a subscription
      responses:
        '200':
          description: Subscription
    patch:
      tags:
      - Subscriptions
      summary: Update a subscription
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Updated subscription
  /subscriptions/{subscription_id}/entries:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    get:
      tags:
      - Subscriptions
      summary: List subscription transactions
      responses:
        '200':
          description: Entries
  /subscriptions/{subscription_id}/pause:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    post:
      tags:
      - Subscriptions
      summary: Pause a subscription
      responses:
        '200':
          description: Paused
  /subscriptions/{subscription_id}/resume:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    post:
      tags:
      - Subscriptions
      summary: Resume a paused subscription
      responses:
        '200':
          description: Resumed
  /subscriptions/{subscription_id}/cancel:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    post:
      tags:
      - Subscriptions
      summary: Cancel a subscription
      responses:
        '200':
          description: Canceled
  /subscriptions/{subscription_id}/convert:
    parameters:
    - $ref: '#/components/parameters/SubscriptionId'
    post:
      tags:
      - Subscriptions
      summary: Convert trial to paid
      responses:
        '200':
          description: Converted
components:
  parameters:
    SubscriptionId:
      in: path
      name: subscription_id
      required: true
      schema:
        type: string
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic
      description: HTTP Basic with credentials from FastSpring App Dashboard