Flowable ProcessInstances API

openapi: 3.1.0
info:
  title: Flowable REST CMMN ProcessInstances API
  version: 1.0.0
  description: Minimal OpenAPI description of the Flowable REST API, which exposes the Flowable Process Engine over HTTP for managing BPMN deployments, process definitions, process instances, tasks, and CMMN cases.
  x-generated-from: https://www.flowable.com/open-source/docs/bpmn/ch14-REST
  x-generated-by: claude-crawl-2026-05-08
servers:
- url: https://flowable.example.com/flowable-rest/service
  description: Default Flowable REST service base
tags:
- name: ProcessInstances
paths:
  /runtime/process-instances:
    get:
      tags:
      - ProcessInstances
      summary: List process instances
      operationId: listProcessInstances
      responses:
        '200':
          description: Process instances
          content:
            application/json:
              schema:
                type: object
    post:
      tags:
      - ProcessInstances
      summary: Start a process instance
      operationId: startProcessInstance
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '201':
          description: Started
          content:
            application/json:
              schema:
                type: object