Google Tasks: Create, Update, Retrieve, and Delete Tasks

This workflow automates Google Tasks management using the Google Tasks API, supporting task creation, updates, retrieval, and deletion. Key nodes include Webhook Trigger (initiates via POST), Input Validation (ensures valid action/taskList), Action Router (directs to create_task/update_task/get_task/get_tasks/delete_task), Create Task Validation (checks title), Task ID Validation (verifies taskId), Sanitize Task Data (sets defaults), Create/Update/Get/Delete Google Task (performs operations), Success Response nodes (return results), and error nodes (General/Create/Task ID/Google Tasks API Error) for handling failures.\n\nSetup Requirements and Configuration: Install n8n from n8n.io for self-hosting or sign up at cloud.n8n.io for cloud setup. Follow prompts or create a cloud account. Obtain Google Tasks OAuth2 credentials from console.developers.google.com: create a project, enable Tasks API, set up OAuth consent screen, create OAuth2 credentials, and download client ID/secret. In n8n, import the JSON workflow. Configure all Google Tasks nodes (Create/Update/Get/Delete) with OAuth2 credentials under ‘Credentials’ > ‘Google Tasks OAuth2 API.’ Set Webhook Trigger path to ‘tasks-automation,’ configure for POST requests, and add header authentication with a secure key (e.g., ‘Authorization: Bearer your-key’). Ensure server resources support API calls.\n\nTesting and Deployment Steps: Test with Postman using a POST request to the Webhook URL. Example JSON: {'action': 'create_task', 'taskList': 'default', 'title': 'Test Task', 'notes': 'Test note', 'due': '2025-08-01T12:00:00Z'} or {'action': 'get_tasks', 'taskList': 'default', 'limit': 10} with authentication header. Success responses return 200 with task data (id/title/status) or task list/count. Error nodes return 400 for invalid inputs (e.g., missing title/taskId) or 500 for API failures. Check logs for errors like ‘Invalid credentials’ or ‘Task not found,’ and verify OAuth scopes or inputs. Activate workflow in n8n. Validate output: ensure task ID matches for create/get/update/delete or task count for get_tasks. Debug persistent errors using n8n logs for token issues or network problems.