Call LLM with tools

Overview

The Call LLM with Tools node extends the Call LLM node by enabling Language Models to autonomously invoke external tools and functions during generation. This super-node maintains all the capabilities of the standard Call LLM node while adding sophisticated tool-calling features that enable agentic workflows, API integrations, and dynamic function execution.

Node Specification

Core Properties

Property	Value
Node Type	Generation/Agent
Category	Tools
Version	2.0

Note: This node inherits all features from the Call LLM node and supports the same range of LLM services. Selected services may add additional parameters beyond those listed here.

Parameters

All parameters from the Call LLM node are available, plus:

Parameter	Type	Options	Default	Required	Description
Enable tool calling	Boolean	true/false	true	No	Activates the LLM's ability to invoke provided tools
Re-call LLM with tool output	Boolean	true/false	true	No	Automatically feeds tool results back to the LLM for final response generation

All other parameters (Role, Generation options, Prompt template, LLM service) function identically to the Call LLM node.

Input Ports

Inherits all input ports from Call LLM, plus:

Port	Type	Accepts	Required	Description
Tools	Tools	Tool definitions	No	Tool definitions from Define Tool nodes or programmatically created tools
Tool Outputs	Tool Output	Tool execution results	No	Hidden port for automatic tool result feedback loop

Output Ports

Inherits all output ports from Call LLM, plus:

Port	Type	Description
Tool output as text	Text	Raw text output from tool executions
Tool output as knowledge	Knowledge	Structured tool results formatted as knowledge segments

Process Flow Exits

Exit	Condition	Description
Main exit	Default completion	Taken after final response generation (with or without tools)
Tool-called exit	Tools invoked without recall	Taken when tools are called but Re-call LLM is disabled