Node Types

Complete reference for all available workflow nodes.

Flow Control AI Models Data Integrations Code

Flow Control

▶️

Start

start

Entry point for the workflow. Defines input variables.

Outputs

• input
• variables

Configuration

• Variable definitions
• Input schema

📤

Output

output

Terminal node that returns the workflow result.

Inputs

• data

Configuration

• Output mapping

🔀

Condition

condition

Branch execution based on a condition.

Inputs

• data

Outputs

• true
• false

Configuration

• Condition expression (JavaScript)

🔄

Loop

loop

Iterate over an array, processing each item.

Inputs

• array

Outputs

• item
• index
• done

Configuration

• Concurrency limit
• Break condition

⚡

Parallel

parallel

Execute multiple branches simultaneously.

Inputs

• trigger

Outputs

• branch1
• branch2
• ...

Configuration

• Number of branches

🔗

Merge

merge

Wait for multiple branches and combine results.

Inputs

• input1
• input2
• ...

Outputs

• merged

Configuration

• Merge strategy (all/any)

AI Models

🤖

LLM

llm

Call a language model (GPT-4, Claude, etc.).

Inputs

• prompt
• context

Outputs

• response
• usage

Configuration

• Model
• Temperature
• Max tokens
• System prompt

🎨

Image Generation

image-gen

Generate images from text prompts.

Inputs

• prompt

Outputs

• image_url
• revised_prompt

Configuration

• Model (DALL-E 3, Flux, SD3)
• Size
• Quality

🔢

Embeddings

embeddings

Convert text to vector embeddings.

Inputs

• text

Outputs

• embedding

Configuration

• Model
• Dimensions

👁️

Vision

vision

Analyze images with vision models.

Inputs

• image
• prompt

Outputs

• analysis

Configuration

• Model
• Detail level

Data

📝

Prompt Template

prompt-template

Build prompts with variable substitution.

Inputs

• variables

Outputs

• prompt

Configuration

• Template string
• Variable mapping

🔍

RAG Query

rag-query

Search your RAG knowledge base.

Inputs

• query

Outputs

• results
• context

Configuration

• RAG instance
• Top K
• Threshold

🔧

JSON Transform

json-transform

Transform data with JSONata or JMESPath.

Inputs

• data

Outputs

• transformed

Configuration

• Expression
• Language (JSONata/JMESPath)

📦

Variable

variable

Store and retrieve values during execution.

Inputs

• value

Outputs

• stored

Configuration

• Variable name
• Scope (local/global)

Integrations

🌐

HTTP Request

http-request

Make HTTP requests to external APIs.

Inputs

• body
• headers

Outputs

• response
• status

Configuration

• URL
• Method
• Auth type
• Timeout

🪝

Webhook

webhook-trigger

Trigger workflow from external webhook.

Outputs

• payload
• headers

Configuration

• Path
• Method
• Auth

🗄️

Database Query

database

Query databases (PostgreSQL, MySQL, etc.).

Inputs

• query
• params

Outputs

• rows

Configuration

• Connection
• Query template

Code

📜

JavaScript

javascript

Run JavaScript code in a sandboxed environment.

Inputs

• data

Outputs

• result

Configuration

• Code
• Timeout

🐍

Python

python

Run Python code in a sandboxed environment.

Inputs

• data

Outputs

• result

Configuration

• Code
• Packages
• Timeout

LLM Node Configuration

The LLM node is the most commonly used node. Here's a detailed look at its configuration:

json

{
  "type": "llm",
  "config": {
    "model": "gpt-4o",
    "system_prompt": "You are a helpful assistant...",
    "temperature": 0.7,
    "max_tokens": 1000,
    "response_format": { "type": "json_object" },
    "tools": [
      {
        "type": "function",
        "function": {
          "name": "search_database",
          "description": "Search the product database",
          "parameters": { ... }
        }
      }
    ]
  },
  "inputs": {
    "prompt": "{{input.message}}",
    "context": "{{rag_node.results}}"
  }
}

Condition Expressions

Condition nodes use JavaScript expressions that return a boolean:

JavaScript

// Simple comparison
data.sentiment === "positive"

// Numeric comparison
data.score > 0.8

// Multiple conditions
data.category === "support" && data.priority === "high"

// Array operations
data.tags.includes("urgent")

// Regex matching
/^error/i.test(data.message)

// Object checking
data.user?.isPremium === true

Variable References

Reference data from other nodes using Mustache-style syntax:

# Input from start node
{{input.user_message}}

# Output from a named node
{{llm_node.response}}

# Nested property
{{api_call.data.results[0].title}}

# Global variable
{{globals.api_key}}

Next Steps

← Workflows Overview

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Webhooks, schedules, and API execution.