openapi: 3.1.0
info:
  title: Tabs Platform BillingTerms CustomFields API
  description: 'REST API for the Tabs revenue automation platform: customers, contracts, items, revenue categories, obligations, billing terms, invoices, payments, credit memos, usage events, and reports. Source: https://docs.tabsplatform.com/llms.txt'
  version: '3'
  contact:
    name: Tabs
    url: https://docs.tabsplatform.com/
servers:
- url: https://api.tabsplatform.com
  description: Production (assumed; consult Tabs docs for exact base URL)
security:
- ApiKeyAuth: []
tags:
- name: CustomFields
paths:
  /custom-fields:
    get:
      tags:
      - CustomFields
      summary: List custom fields
      operationId: listCustomFields
      responses:
        '200':
          description: OK
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: Server-side API key issued from the Tabs dashboard for backend integrations.