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Domain availability checker chatbot with Google Gemini and WHMCS

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Domain availability checker chatbot with Google Gemini and WHMCS preview
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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This n8n template implements a Chatbot with Google Gemini to Check Domain Name Availability using the WHMCS API Who's it for This template is designed for domain registrars, web hosting companies, ...

Best for

  • AI Chatbot automation workflows
  • Multimodal AI automation workflows
  • intermediate n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatgooglegemini, @n8n/n8n-nodes-langchain.memorybufferwindow, n8n-nodes-base.httprequesttool, n8n-nodes-base.respondtowebhook, n8n-nodes-base.webhook, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Omer Fayyaz.

Original n8n.io source

1.1 Workflow description

Title
Domain availability checker chatbot with Google Gemini and WHMCS
Workflow name
Domain availability checker chatbot with Google Gemini and WHMCS

This n8n template implements a Chatbot with Google Gemini to Check Domain Name Availability using the WHMCS API

Who's it for

This template is designed for domain registrars, web hosting companies, and IT service providers who use WHMCS (Web Host Manager Complete Solution) and want to offer automated domain availability checking to their customers. It's perfect for businesses looking to enhance their customer support with AI-powered domain search assistance.

How it works / What it does

This workflow creates an AI-powered customer support chatbot that automatically checks domain name availability using WHMCS API integration. When customers ask about domain availability, the AI agent:

  1. Receives customer queries through a webhook endpoint
  2. Processes natural language requests using Google Gemini AI
  3. Automatically checks domain availability via WHMCS DomainWhois API
  4. Provides verified, accurate responses with available alternatives
  5. Maintains conversation context throughout the session

The system ensures 100% accuracy by only suggesting domains that have been verified as available, eliminating guesswork and improving customer trust.

How to set up

1. Configure WHMCS API Credentials

  • Replace Your_WHMCS_Identifier with your actual WHMCS API identifier
  • Replace Your_WHMCS_Secret with your actual WHMCS API secret
  • Update https://your_whmcs_url.com/includes/api.php with your WHMCS domain

2. Set up Google Gemini API

  • Configure your Google Gemini API credentials in the Google Gemini Chat Model node
  • Ensure you have sufficient API quota for your expected usage

3. Deploy the Webhook

  • The workflow creates a unique webhook endpoint for receiving customer queries
  • Use this endpoint URL in your customer-facing application or chat interface

4. Test the Integration

  • Send a test query to verify domain checking functionality
  • Ensure proper error handling and response formatting

Requirements

  • WHMCS installation with API access enabled
  • Google Gemini API account with appropriate credentials
  • n8n instance (self-hosted or cloud)
  • Domain registrar business or similar service offering

How to customize the workflow

Modify AI Agent Behavior

  • Edit the system message in the AI Agent node to change the bot's personality and response style
  • Adjust response length and tone to match your brand voice

Add Additional Tools

  • Integrate with other WHMCS APIs for pricing, registration, or management
  • Add notification systems (email, Slack, SMS) for high-value domain inquiries
  • Implement rate limiting or usage tracking

Enhance Customer Experience

  • Add domain suggestion algorithms based on customer input
  • Integrate with your existing customer database for personalized recommendations
  • Add multi-language support for international customers

Security Enhancements

  • Implement API key rotation and monitoring
  • Add request validation and sanitization
  • Set up usage analytics and abuse prevention

Key Features

  • Real-time domain availability checking via WHMCS API
  • AI-powered natural language processing for customer queries
  • Session-based memory for contextual conversations
  • Automatic alternative domain suggestions when requested domains are unavailable
  • Professional, customer-focused responses that maintain brand standards
  • Scalable webhook architecture for high-volume usage

Use Cases

  • Customer support automation for domain registrars
  • Sales team assistance with real-time domain availability
  • Customer self-service portals with intelligent domain search
  • Lead generation through proactive domain suggestions
  • Customer retention via improved support experience

This template transforms your domain business by providing instant, accurate domain availability information while maintaining the personal touch that customers expect from professional service providers.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - AI Agent

Type / Role
@n8n/n8n-nodes-langchain.agent - agent
Config choices
Version 2.1

Block 2 - Google Gemini Chat Model

Type / Role
@n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices
Version 1

Block 3 - Simple Memory

Type / Role
@n8n/n8n-nodes-langchain.memoryBufferWindow - memoryBufferWindow
Config choices
Version 1.3

Block 4 - Domain_Availability_Checker

Type / Role
n8n-nodes-base.httpRequestTool - httpRequestTool
Config choices
Version 4.2

Block 5 - Respond to Webhook1

Type / Role
n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices
Version 1

Block 6 - Webhook

Type / Role
n8n-nodes-base.webhook - webhook
Config choices
Version 2

Block 7 - Sticky Note

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

Block 8 - Sticky Note1

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

3. Summary Table

Workflow Domain availability checker chatbot with Google Gemini and WHMCS
Complexity intermediate
Nodes 8
Categories AI Chatbot, Multimodal AI
Author Omer Fayyaz
Published 17 Aug 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/7527/7527.json as the source template for this automation.

  2. 2. Import the template into n8n

    Open n8n, import the downloaded JSON, and review each node before activating the workflow.

  3. 3. Configure credentials and variables

    Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.

  4. 4. Test with sample data

    Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.

  5. 5. Activate and monitor

    Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Frequently asked questions

What does Domain availability checker chatbot with Google Gemini and WHMCS do?

This n8n template implements a Chatbot with Google Gemini to Check Domain Name Availability using the WHMCS API Who's it for This template is designed for domain registrars, web hosting companies, ...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your AI Chatbot, Multimodal AI use case.