openapi: 3.1.0
info:
  title: Increase Account Numbers Events API
  description: Increase is a bank-grade payments and financial infrastructure platform that exposes a single REST API for moving and holding money in the United States. This document models the primary resources of the Increase API - Accounts, Account Numbers, Cards, Card Payments, ACH / Wire / Real-Time Payments / Check transfers, Transactions, Entities, Events and webhooks, Bookkeeping, Card Profiles and Digital Wallets, Lockboxes, and Simulations. It is grounded in Increase's public OpenAPI 3.1 spec (https://api.increase.com/openapi.json) and the Stainless-generated SDKs. Authentication is a Bearer API key. All endpoints are HTTPS REST; state changes are delivered as Events over HTTP webhooks (no WebSocket surface). Requests support idempotency via the `Idempotency-Key` header. This is a representative, not exhaustive, subset of the full API.
  version: 0.0.1
  contact:
    name: Increase
    url: https://increase.com
  license:
    name: Increase Documentation
    url: https://increase.com/documentation
servers:
- url: https://api.increase.com
  description: Production
- url: https://sandbox.increase.com
  description: Sandbox
security:
- bearerAuth: []
tags:
- name: Events
  description: Events and webhook Event Subscriptions.
paths:
  /events:
    get:
      operationId: listEvents
      tags:
      - Events
      summary: List Events
      description: Poll or backfill the Events emitted by state changes across every resource. Retains up to 30 days of history.
      parameters:
      - name: category
        in: query
        schema:
          type: string
      - $ref: '#/components/parameters/Cursor'
      - $ref: '#/components/parameters/Limit'
      responses:
        '200':
          description: A list of Events.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Event'
  /events/{event_id}:
    parameters:
    - name: event_id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: retrieveEvent
      tags:
      - Events
      summary: Retrieve an Event
      responses:
        '200':
          description: The Event.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Event'
  /event_subscriptions:
    get:
      operationId: listEventSubscriptions
      tags:
      - Events
      summary: List Event Subscriptions
      responses:
        '200':
          description: A list of Event Subscriptions.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/EventSubscription'
    post:
      operationId: createEventSubscription
      tags:
      - Events
      summary: Create an Event Subscription
      description: Register an HTTPS endpoint to receive signed webhooks for Events, optionally filtered to a category.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - url
              properties:
                url:
                  type: string
                  format: uri
                shared_secret:
                  type: string
                selected_event_category:
                  type: string
      responses:
        '200':
          description: The created Event Subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventSubscription'
  /event_subscriptions/{event_subscription_id}:
    parameters:
    - name: event_subscription_id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: retrieveEventSubscription
      tags:
      - Events
      summary: Retrieve an Event Subscription
      responses:
        '200':
          description: The Event Subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventSubscription'
    patch:
      operationId: updateEventSubscription
      tags:
      - Events
      summary: Update an Event Subscription
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                status:
                  type: string
                  enum:
                  - active
                  - disabled
                  - deleted
      responses:
        '200':
          description: The updated Event Subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventSubscription'
components:
  schemas:
    EventSubscription:
      type: object
      properties:
        id:
          type: string
        url:
          type: string
          format: uri
        status:
          type: string
          enum:
          - active
          - disabled
          - deleted
          - requires_attention
        selected_event_category:
          type: string
          nullable: true
        type:
          type: string
          example: event_subscription
    Event:
      type: object
      properties:
        id:
          type: string
        category:
          type: string
          description: e.g. transaction.created
          ach_transfer.updated: null
          account.created: null
        associated_object_id:
          type: string
        associated_object_type:
          type: string
        created_at:
          type: string
          format: date-time
        type:
          type: string
          example: event
  parameters:
    Cursor:
      name: cursor
      in: query
      required: false
      description: Return the page of results starting after this cursor.
      schema:
        type: string
    Limit:
      name: limit
      in: query
      required: false
      description: Number of results to return per page (1-100, default 100).
      schema:
        type: integer
        default: 100
        minimum: 1
        maximum: 100
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Increase API key passed as `Authorization: Bearer YOUR_API_KEY`. Keys are environment-scoped (production vs sandbox). OAuth is also supported for platform / Increase-for-platforms integrations.'