HTTP Methods Explained: Think Library for GET, Form for POST

Описание: HTTP request methods in n8n determine data flow direction: GET retrieves information from servers, POST sends information to servers for processing or storage.

GET request use cases in n8n workflows: fetching customer data from CRMs, retrieving weather API information, reading database records, pulling order status, accessing public endpoints without authentication requirements.

POST request use cases: creating tasks in project management tools, uploading files to cloud storage, submitting form data to databases, triggering webhook actions, sending data to third-party services.

Common n8n HTTP node mistake: using GET when endpoint requires POST causes 405 Method Not Allowed errors—always check API documentation for specified HTTP method requirements.

Additional HTTP methods exist: PUT for replacing resources, PATCH for partial updates, DELETE for removing data—but GET and POST handle majority of automation workflow scenarios.

API documentation specifies required HTTP method per endpoint—reference official docs before configuring n8n HTTP Request nodes to avoid authentication failures and request errors.

Understanding REST API conventions helps debug n8n workflow issues faster and build reliable integrations with external services.

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