generated: '2026-07-19'
method: derived
source: openapi/hitchpin-django-api-openapi.json
notes: >-
  Entity-relationship graph derived from OpenAPI component schema $ref links in the
  HitchPin Django (marketplace / instant-invoicing) API. Relationships reflect schema
  composition in the published spec.
entities:
- name: InstantInvoice
  description: A shareable, payable invoice issued by a seller on the HitchPin marketplace.
  relationships:
  - type: has_many
    target: Attachment
    via: attachments
- name: Attachment
  description: A file attached to an instant invoice.
  relationships: []
- name: ShareableInstantInvoice
  description: The public, share-safe projection of an instant invoice.
  relationships:
  - type: has_one
    target: Nested
    via: nested
- name: InstantInvoiceShare
  description: A share link record exposing a ShareableInstantInvoice to a payer.
  relationships:
  - type: has_one
    target: ShareableInstantInvoice
    via: invoice
- name: InstantInvoiceReceipt
  description: The receipt generated after an instant invoice is paid.
  relationships:
  - type: has_one
    target: ShareableInstantInvoice
    via: invoice
- name: Nested
  description: Nested detail object embedded in a shareable invoice.
  relationships: []