Subindo documentação do n8n limpa

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---
#https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4
title: Programmatic-style execute() method
description: A reference document for the programmatic-style execute() method of the node base file.
contentType: reference
---
# Programmatic-style execute() method

The main difference between the declarative and programmatic styles is how they handle incoming data and build API requests. The programmatic style requires an `execute()` method, which reads incoming data and parameters, then builds a request. The declarative style handles requests using the `routing` key in the `operations` object.

The `execute()` method creates and returns an instance of `INodeExecutionData`.

/// warning | Paired items
You must include input and output item pairing information in the data you return. For more information, refer to [Paired items](/integrations/creating-nodes/build/reference/paired-items.md).
///

	---
	#https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4
	title: Programmatic-style execute() method
	description: A reference document for the programmatic-style execute() method of the node base file.
	contentType: reference
	---

	# Programmatic-style execute() method

	The main difference between the declarative and programmatic styles is how they handle incoming data and build API requests. The programmatic style requires an `execute()` method, which reads incoming data and parameters, then builds a request. The declarative style handles requests using the `routing` key in the `operations` object.

	The `execute()` method creates and returns an instance of `INodeExecutionData`.

	/// warning \| Paired items
	You must include input and output item pairing information in the data you return. For more information, refer to [Paired items](/integrations/creating-nodes/build/reference/paired-items.md).
	///