openapi: 3.1.0
info:
  title: Microsoft To Do API (Microsoft Graph)
  description: >-
    Minimal OpenAPI definition for the Microsoft To Do API exposed via
    Microsoft Graph for managing task lists, tasks, checklist items, and
    linked resources.
  version: v1.0
  x-generated-from: https://learn.microsoft.com/en-us/graph/api/resources/todo-overview
  x-generated-by: claude-crawl-2026-05-08
servers:
  - url: https://graph.microsoft.com/v1.0
    description: Microsoft Graph v1.0
security:
  - bearerAuth: []
tags:
  - name: TaskLists
  - name: Tasks
  - name: ChecklistItems
  - name: LinkedResources
paths:
  /me/todo/lists:
    get:
      tags: [TaskLists]
      summary: List todoTaskLists
      operationId: listTodoTaskLists
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericList'
    post:
      tags: [TaskLists]
      summary: Create todoTaskList
      operationId: createTodoTaskList
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '201':
          description: Created
  /me/todo/lists/{todoTaskListId}:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
    get:
      tags: [TaskLists]
      summary: Get todoTaskList
      operationId: getTodoTaskList
      responses:
        '200':
          description: OK
    patch:
      tags: [TaskLists]
      summary: Update todoTaskList
      operationId: updateTodoTaskList
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '200':
          description: OK
    delete:
      tags: [TaskLists]
      summary: Delete todoTaskList
      operationId: deleteTodoTaskList
      responses:
        '204':
          description: No Content
  /me/todo/lists/{todoTaskListId}/tasks:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
    get:
      tags: [Tasks]
      summary: List todoTasks in list
      operationId: listTodoTasks
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericList'
    post:
      tags: [Tasks]
      summary: Create todoTask
      operationId: createTodoTask
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '201':
          description: Created
  /me/todo/lists/{todoTaskListId}/tasks/{todoTaskId}:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
      - $ref: '#/components/parameters/TaskId'
    get:
      tags: [Tasks]
      summary: Get todoTask
      operationId: getTodoTask
      responses:
        '200':
          description: OK
    patch:
      tags: [Tasks]
      summary: Update todoTask
      operationId: updateTodoTask
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '200':
          description: OK
    delete:
      tags: [Tasks]
      summary: Delete todoTask
      operationId: deleteTodoTask
      responses:
        '204':
          description: No Content
  /me/todo/lists/{todoTaskListId}/tasks/{todoTaskId}/checklistItems:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
      - $ref: '#/components/parameters/TaskId'
    get:
      tags: [ChecklistItems]
      summary: List checklist items
      operationId: listChecklistItems
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericList'
    post:
      tags: [ChecklistItems]
      summary: Create checklist item
      operationId: createChecklistItem
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '201':
          description: Created
  /me/todo/lists/{todoTaskListId}/tasks/{todoTaskId}/checklistItems/{checklistItemId}:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
      - $ref: '#/components/parameters/TaskId'
      - in: path
        name: checklistItemId
        required: true
        schema: { type: string }
    get:
      tags: [ChecklistItems]
      summary: Get checklist item
      operationId: getChecklistItem
      responses:
        '200':
          description: OK
    patch:
      tags: [ChecklistItems]
      summary: Update checklist item
      operationId: updateChecklistItem
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '200':
          description: OK
    delete:
      tags: [ChecklistItems]
      summary: Delete checklist item
      operationId: deleteChecklistItem
      responses:
        '204':
          description: No Content
  /me/todo/lists/{todoTaskListId}/tasks/{todoTaskId}/linkedResources:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
      - $ref: '#/components/parameters/TaskId'
    get:
      tags: [LinkedResources]
      summary: List linked resources
      operationId: listLinkedResources
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericList'
    post:
      tags: [LinkedResources]
      summary: Create linked resource
      operationId: createLinkedResource
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GenericObject'
      responses:
        '201':
          description: Created
  /me/todo/lists/{todoTaskListId}/tasks/delta:
    parameters:
      - $ref: '#/components/parameters/TaskListId'
    get:
      tags: [Tasks]
      summary: Delta query of todoTasks in list
      operationId: deltaTodoTasks
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericList'
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
  parameters:
    TaskListId:
      in: path
      name: todoTaskListId
      required: true
      schema: { type: string }
    TaskId:
      in: path
      name: todoTaskId
      required: true
      schema: { type: string }
  schemas:
    GenericObject:
      type: object
      additionalProperties: true
    GenericList:
      type: object
      properties:
        value:
          type: array
          items:
            $ref: '#/components/schemas/GenericObject'
      additionalProperties: true