openapi: 3.2.0
info:
  title: MolTrust Billing API
  version: '2.5'
tags:
- name: Billing
paths:
  /billing/plans:
    get:
      tags:
      - Billing
      summary: List Plans
      description: 'Public: return all available plans, free tier included.


        The free tier is described here but kept out of TIERS: everything in that

        dict resolves to a Stripe lookup_key, and a checkout for "free" has nothing

        to resolve. Listing it only on the pricing page while /plans showed three

        paid tiers left every machine reader believing there was no free tier.'
      operationId: list_plans_billing_plans_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
  /billing/checkout:
    post:
      tags:
      - Billing
      summary: Create Checkout
      description: 'Create a Stripe Checkout Session.

        Returns {checkout_url} — redirect customer there.'
      operationId: create_checkout_billing_checkout_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CheckoutRequest'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /billing/portal:
    post:
      tags:
      - Billing
      summary: Customer Portal
      description: Create a Stripe Customer Portal session for self-service management.
      operationId: customer_portal_billing_portal_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PortalRequest'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /billing/subscription/{customer_id}:
    get:
      tags:
      - Billing
      summary: Get Subscription
      description: Get current subscription status for a customer.
      operationId: get_subscription_billing_subscription__customer_id__get
      parameters:
      - name: customer_id
        in: path
        required: true
        schema:
          type: string
          title: Customer Id
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /billing/webhook:
    post:
      tags:
      - Billing
      summary: Stripe Webhook
      description: 'Stripe sends signed events here.

        Verifies signature → updates billing tables via asyncpg pool.'
      operationId: stripe_webhook_billing_webhook_post
      parameters:
      - name: stripe-signature
        in: header
        required: false
        schema:
          type: string
          title: Stripe-Signature
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    PortalRequest:
      properties:
        customer_id:
          type: string
          title: Customer Id
        return_url:
          type: string
          title: Return Url
          default: https://moltrust.ch/dashboard
      type: object
      required:
      - customer_id
      title: PortalRequest
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    CheckoutRequest:
      properties:
        tier:
          type: string
          title: Tier
        currency:
          type: string
          title: Currency
          default: usd
        email:
          anyOf:
          - type: string
            format: email
          - type: 'null'
          title: Email
        agent_did:
          anyOf:
          - type: string
          - type: 'null'
          title: Agent Did
        payer_ref:
          anyOf:
          - type: string
          - type: 'null'
          title: Payer Ref
        ref:
          anyOf:
          - type: string
          - type: 'null'
          title: Ref
          description: Optional referral source tag (e.g. 'dsncon'). Stored on the subscription for attribution.
        success_url:
          type: string
          title: Success Url
          default: https://moltrust.ch/billing/success
        cancel_url:
          type: string
          title: Cancel Url
          default: https://moltrust.ch/billing/cancel
      type: object
      required:
      - tier
      title: CheckoutRequest