openapi: 3.0.3
info:
  title: Tabs Platform Catalog API
  description: 'The Tabs Platform API is the public REST API for Tabs (tabs.inc), an AI-native revenue automation platform for B2B companies that unifies billing, collections, ASC 606 revenue recognition, and reporting on top of a contract-driven data model. The API exposes the core Tabs data model - customers, contracts, items, revenue categories, obligations, invoices, payments, usage events, and performance obligations - so contract, billing, and revenue data can flow into the rest of the finance stack (ERP, CRM, payment, and tax systems). You can push customers, contracts, obligations, and usage into Tabs, and pull invoices, payments, recognized revenue, ARR, and cash-forecast reporting back out.

    NOTE ON ENDPOINT SHAPES: Tabs publishes public developer documentation at docs.tabsplatform.com describing the data model, authentication, and the documented resource groups and operations (list/create/get/update/delete per resource, invoice actions and PDF download, obligation and performance- obligation management, recognized-revenue upsert, ARR and cash-forecast reports, usage events). The base URL (https://api.tabsplatform.com) and Authorization-header API-key auth are confirmed from those docs. The exact request/response path strings below are MODELED on standard REST conventions consistent with the documented operations, because Tabs does not publish a downloadable OpenAPI file or literal path strings in its public docs as of the review date. Verify concrete paths and schemas against the live console reference before use.'
  version: '1.0'
  contact:
    name: Tabs
    url: https://tabs.inc
  x-endpointsModeled: true
servers:
- url: https://api.tabsplatform.com
  description: Tabs Platform production API
security:
- apiKeyAuth: []
tags:
- name: Catalog
  description: Items (GL-mapped products/services) and revenue categories.
paths:
  /items:
    get:
      operationId: listItems
      tags:
      - Catalog
      summary: List items
      description: List items - products/services mapped to GL accounting codes.
      responses:
        '200':
          description: A list of items.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Item'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /categories:
    get:
      operationId: listCategories
      tags:
      - Catalog
      summary: List revenue categories
      responses:
        '200':
          description: A list of revenue categories.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Category'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Category:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
    Item:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        glCode:
          type: string
        categoryId:
          type: string
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
  responses:
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'API key passed directly in the Authorization header (Authorization: YOUR_API_KEY). Keys are created in the Developers section of the Tabs app and require administrator privileges.'