Node Types Overview

KeeperHub workflows are built from three types of nodes: Triggers, Actions, and Conditions. Each node type serves a specific purpose in your automation.

Trigger Nodes

Triggers determine when your workflow executes. Every workflow must start with a trigger node.

Scheduled Trigger

Run your workflow at regular intervals.

Configuration:

• Interval selection (every 5 minutes, hourly, daily, weekly, custom cron)
• Timezone settings

Use Cases: Regular balance checks, periodic report generation, scheduled maintenance tasks

Webhook Trigger

Run your workflow when an external service sends an HTTP request.

Configuration:

• Unique webhook URL (auto-generated)
• Optional authentication headers

Use Cases: Integration with external systems, CI/CD pipelines, third-party alerts

Event Trigger

Run your workflow when a specific blockchain event is detected.

Configuration:

• Contract address
• Event signature
• Network selection

Use Cases: React to token transfers, smart contract state changes, on-chain activity

Manual Trigger

Run your workflow only when you click the Run button.

Configuration:

• No additional setup required

Use Cases: Testing, one-time operations, on-demand executions

Action Nodes

Actions perform operations in your workflow. Connect multiple actions to create complex automations.

Web3 Actions

Check Balance

Monitor wallet or token balances on any supported network.

Configuration:

• Network (Ethereum Mainnet, Sepolia, etc.)
• Wallet address to monitor
• Token contract (optional, for ERC-20 tokens)

Output: Current balance value for use in conditions

Read Contract

Call read-only functions on smart contracts.

Configuration:

• Network and contract address
• Function to call (auto-populated from ABI)
• Function parameters

Output: Function return values

Write Contract

Execute state-changing functions on smart contracts.

Configuration:

• Network and contract address
• Function to call
• Function parameters
• Gas settings

Requirements: Funded Para wallet for gas fees

Transfer Funds

Send ETH or tokens to another address.

Configuration:

• Network
• Recipient address
• Amount
• Token contract (optional)

Requirements: Funded Para wallet

Notification Actions

Send Email

Send email notifications when workflow conditions are met.

Configuration:

• Connection (email provider)
• Recipient address(es)
• Subject and message content
• Dynamic variables from workflow

Send Discord Message

Post messages to Discord channels.

Configuration:

• Connection (Discord webhook)
• Message content
• Dynamic variables from workflow

Send Slack Message

Post messages to Slack channels.

Configuration:

• Connection (Slack workspace)
• Channel selection
• Message content

Send Telegram Message

Send messages to Telegram chats and channels.

Configuration:

• Connection (Telegram bot token)
• Chat ID (numeric ID or @username)
• Message content
• Parse mode (plain text or MarkdownV2)

Output: Success status, message ID

Integration Actions

Send Webhook

Send HTTP requests to external services.

Configuration:

• URL (HTTPS required)
• HTTP method (GET, POST, etc.)
• Headers
• JSON payload with dynamic variables

Condition Nodes

Conditions evaluate data from previous nodes and determine which path the workflow takes.

Low Balance Condition

Check if a balance is below a specified threshold.

Configuration:

• Threshold value
• Comparison operator

Outputs: Two paths - condition met (true) or not met (false)

Value Comparison

Compare any value against a target.

Configuration:

• Input value (from previous node)
• Operator (equals, not equals, greater than, less than, contains)
• Comparison value

Custom Condition

Combine multiple conditions with logical operators.

Configuration:

• Multiple condition rules
• AND/OR logic between rules

Choosing the Right Nodes