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OpenAPI Specification

openapi: 3.2.0
info:
  title: Camunda 8 REST Cluster Process Instances API
  description: The Camunda 8 REST API provides endpoints for managing process instances, jobs, decisions, deployments, messages, signals, and other resources in the Camunda 8 process orchestration platform.
  version: 8.6.0
  contact:
    name: Camunda
    url: https://camunda.com/
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: '{baseUrl}/v2'
  description: Camunda 8 Self-Managed or SaaS
  variables:
    baseUrl:
      default: http://localhost:8080
security:
- BearerAuth: []
tags:
- name: Process Instances
paths:
  /process-instances:
    post:
      operationId: createProcessInstance
      summary: Create a process instance
      description: Creates and starts a new process instance.
      tags:
      - Process Instances
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateProcessInstanceRequest'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProcessInstance'
  /process-instances/search:
    post:
      operationId: searchProcessInstances
      summary: Search process instances
      description: Search for process instances based on provided criteria.
      tags:
      - Process Instances
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchRequest'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProcessInstanceSearchResponse'
  /process-instances/{processInstanceKey}:
    get:
      operationId: getProcessInstance
      summary: Get process instance
      description: Returns a specific process instance by key.
      tags:
      - Process Instances
      parameters:
      - name: processInstanceKey
        in: path
        required: true
        schema:
          type: integer
          format: int64
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProcessInstance'
    delete:
      operationId: cancelProcessInstance
      summary: Cancel a process instance
      description: Cancels a running process instance.
      tags:
      - Process Instances
      parameters:
      - name: processInstanceKey
        in: path
        required: true
        schema:
          type: integer
          format: int64
      responses:
        '204':
          description: Process instance cancelled
components:
  schemas:
    CreateProcessInstanceRequest:
      type: object
      properties:
        processDefinitionKey:
          type: integer
          format: int64
        bpmnProcessId:
          type: string
        version:
          type: integer
        variables:
          type: object
        tenantId:
          type: string
    ProcessInstanceSearchResponse:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/ProcessInstance'
        page:
          type: object
    ProcessInstance:
      type: object
      properties:
        processInstanceKey:
          type: integer
          format: int64
        processDefinitionKey:
          type: integer
          format: int64
        bpmnProcessId:
          type: string
        version:
          type: integer
        tenantId:
          type: string
    SearchRequest:
      type: object
      properties:
        filter:
          type: object
        sort:
          type: array
          items:
            type: object
            properties:
              field:
                type: string
              order:
                type: string
                enum:
                - ASC
                - DESC
        page:
          type: object
          properties:
            from:
              type: integer
            limit:
              type: integer
            searchAfter:
              type: array
              items: {}
            searchBefore:
              type: array
              items: {}
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer