openapi: 3.0.3
info:
  title: QStash Dead Letter Queue URL Groups API
  description: QStash is a serverless message queue and task scheduling REST API from Upstash that delivers HTTP messages to endpoints reliably without requiring any long-lived connections or infrastructure management. Built entirely on stateless HTTP requests, it is designed for serverless and edge runtimes where traditional message brokers are impractical. QStash supports automatic retries, CRON-based scheduling up to one year in advance, URL group broadcasting for fan-out delivery, FIFO queuing, dead-letter queues, and message deduplication.
  version: '2.0'
  contact:
    name: Upstash Support
    url: https://upstash.com/docs/qstash/overall/getstarted
  license:
    name: Upstash Terms of Service
    url: https://upstash.com/trust/terms.pdf
servers:
- url: https://qstash.upstash.io/v2
  description: QStash production API
security:
- BearerAuth: []
tags:
- name: URL Groups
  description: Manage URL groups for fan-out delivery
paths:
  /topics/{urlGroupName}/endpoints:
    post:
      operationId: upsertUrlGroupEndpoints
      summary: Create or update URL group endpoints
      description: Create a URL Group or add/update its endpoints. URL groups allow fan-out message delivery to multiple destinations simultaneously.
      tags:
      - URL Groups
      parameters:
      - name: urlGroupName
        in: path
        required: true
        description: Name of the URL Group (alphanumeric, underscore, hyphen, and dot characters only)
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UrlGroupUpsert'
            example:
              endpoints:
              - name: endpoint-one
                url: https://example.com/handler1
              - name: endpoint-two
                url: https://example.com/handler2
      responses:
        '200':
          description: URL Group endpoints created or updated
        '401':
          $ref: '#/components/responses/Unauthorized'
  /topics/{urlGroupName}:
    get:
      operationId: getUrlGroup
      summary: Get a URL group
      description: Retrieve configuration and endpoints of a URL Group.
      tags:
      - URL Groups
      parameters:
      - name: urlGroupName
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: URL Group details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UrlGroup'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteUrlGroup
      summary: Delete a URL group
      description: Delete a URL Group and all its endpoint configurations.
      tags:
      - URL Groups
      parameters:
      - name: urlGroupName
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: URL Group deleted
        '404':
          $ref: '#/components/responses/NotFound'
  /topics/{urlGroupName}/endpoints/{endpointName}:
    delete:
      operationId: deleteUrlGroupEndpoint
      summary: Remove an endpoint from a URL group
      description: Remove a specific endpoint from a URL Group.
      tags:
      - URL Groups
      parameters:
      - name: urlGroupName
        in: path
        required: true
        schema:
          type: string
      - name: endpointName
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Endpoint removed
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Unauthorized:
      description: Missing or invalid authentication token
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    UrlGroupEndpoint:
      type: object
      required:
      - url
      properties:
        name:
          type: string
          description: Identifier for this endpoint within the URL Group
        url:
          type: string
          format: uri
          description: Target URL for this endpoint
    UrlGroup:
      type: object
      properties:
        name:
          type: string
          description: URL Group name
        endpoints:
          type: array
          items:
            $ref: '#/components/schemas/UrlGroupEndpoint'
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
          description: Human-readable error message
    UrlGroupUpsert:
      type: object
      required:
      - endpoints
      properties:
        endpoints:
          type: array
          items:
            $ref: '#/components/schemas/UrlGroupEndpoint'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Bearer token obtained from the Upstash console at https://console.upstash.com/qstash. Alternatively, pass as query parameter `qstash_token`.
externalDocs:
  description: QStash Documentation
  url: https://upstash.com/docs/qstash/overall/getstarted