Make Your Billing Agent-Ready

openapi: 3.1.0
info:
  title: ProjectFlow Agent Billing API
  version: 1.0.0
  description: >
    Agent-friendly billing endpoints
    for ProjectFlow subscriptions.

paths:
  /plans:
    get:
      operationId: listPlans
      summary: List all available plans
      responses:
        200:
          description: Array of plans
          content:
            application/json:
              schema:
                type: object
                properties:
                  plans:
                    type: array
                    items:
                      $ref: '#/components/schemas/Plan'

  /subscribe:
    post:
      operationId: createSubscription
      summary: Subscribe to a plan
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [plan_id, customer_email]
              properties:
                plan_id:
                  type: string
                customer_email:
                  type: string

{
  "name": "projectflow_billing",
  "description": "Manage ProjectFlow subscriptions",
  "input_schema": {
    "type": "object",
    "properties": {
      "action": {
        "type": "string",
        "enum": [
          "list_plans",
          "subscribe",
          "upgrade",
          "downgrade",
          "cancel",
          "get_status"
        ]
      },
      "plan_id": {
        "type": "string",
        "description": "Target plan ID"
      },
      "customer_email": {
        "type": "string",
        "description": "Customer email"
      },
      "subscription_id": {
        "type": "string",
        "description": "Existing subscription ID"
      }
    },
    "required": ["action"]
  }
}