Kanban Tool

Kanban Tool Subtasks.json API

The Subtasks.json API from Kanban Tool — 1 operation(s) for subtasks.json.

GitHub OpenAPI

Documentation

📖
Documentation
https://kanbantool.com/developer/api-v3
📖
Authentication
https://kanbantool.com/developer/api-v3

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/kanban/refs/heads/main/openapi/kanban-subtasks-json-api-openapi.yml

OpenAPI Specification

kanban-subtasks-json-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Kanban Tool API v3 Attachments Subtasks.json API
  description: Minimal OpenAPI 3.1 description of the Kanban Tool REST API v3 covering users, boards, tasks, subtasks, comments, attachments, and time trackers.
  version: 3.0.0
servers:
- url: https://YOUR_DOMAIN.kanbantool.com/api/v3
  description: Kanban Tool account API base
tags:
- name: Subtasks.json
paths:
  /subtasks.json:
    post:
      summary: Create subtask
      operationId: createSubtask
      requestBody:
        content:
          application/json:
            schema:
              type: object
      responses:
        '201':
          description: Created
      tags:
      - Subtasks.json
x-generated-from: https://kanbantool.com/developer/api-v3
x-generated-by: claude-crawl-2026-05-08