[eBay] negotiation API MCP server
Complete MCP server exposing 2 Negotiation API operations to AI agents.
⚡ Quick Setup
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- Import this workflow into your n8n instance
- Credentials Add Negotiation API credentials
- Activate the workflow to start your MCP server
- Copy the webhook URL from the MCP trigger node
- Connect AI agents using the MCP URL
🔧 How it Works
This workflow converts the Negotiation API into an MCP-compatible interface for AI agents.
• MCP Trigger: Serves as your server endpoint for AI agent requests
• HTTP Request Nodes: Handle API calls to https://api.ebay.com{basePath}
• AI Expressions: Automatically populate parameters via $fromAI() placeholders
• Native Integration: Returns responses directly to the AI agent
📋 Available Operations (2 total)
🔧 Find_Eligible_Items (1 endpoints)
• GET /find_eligible_items: Find Eligible Listings
🔧 Send_Offer_To_Interested_Buyers (1 endpoints)
• POST /send_offer_to_interested_buyers: Send Discount Offer
🤖 AI Integration
Parameter Handling: AI agents automatically provide values for: • Path parameters and identifiers • Query parameters and filters • Request body data • Headers and authentication
Response Format: Native Negotiation API responses with full data structure
Error Handling: Built-in n8n HTTP request error management
💡 Usage Examples
Connect this MCP server to any AI agent or workflow:
• Claude Desktop: Add MCP server URL to configuration • Cursor: Add MCP server SSE URL to configuration • Custom AI Apps: Use MCP URL as tool endpoint • API Integration: Direct HTTP calls to MCP endpoints
✨ Benefits
• Zero Setup: No parameter mapping or configuration needed
• AI-Ready: Built-in $fromAI() expressions for all parameters
• Production Ready: Native n8n HTTP request handling and logging
• Extensible: Easily modify or add custom logic
> 🆓 Free for community use! Ready to deploy in under 2 minutes.
n8n Workflow: MCP Server Trigger Example
This n8n workflow demonstrates the basic setup and usage of the Model Context Protocol (MCP) Server Trigger. It serves as a foundational example for building workflows that can interact with and respond to MCP requests.
What it does
This workflow is a minimal example designed to illustrate the functionality of the MCP Server Trigger.
- Listens for MCP Requests: The "MCP Server Trigger" node acts as an endpoint, waiting to receive incoming requests conforming to the Model Context Protocol.
- No further processing: In this specific configuration, the workflow simply triggers and does not perform any subsequent actions or processing of the incoming MCP request. It's a "hello world" for MCP.
Prerequisites/Requirements
- n8n Instance: An active n8n instance where this workflow can be imported and run.
- Understanding of Model Context Protocol (MCP): Familiarity with the Model Context Protocol is beneficial to understand the types of requests this trigger is designed to receive.
Setup/Usage
- Import the workflow:
- Copy the provided JSON content.
- In your n8n instance, go to "Workflows" and click "New".
- Click on the "Import from JSON" button (usually a cloud icon with an arrow pointing down) and paste the JSON.
- Activate the workflow:
- After importing, ensure the workflow is activated by toggling the "Active" switch in the top right corner of the workflow editor.
- Test (Optional):
- You can manually test the trigger by sending an MCP-compliant request to the exposed webhook URL of the "MCP Server Trigger" node. The URL will be visible in the node's settings once the workflow is active.
- Since there are no subsequent nodes, you will only observe the trigger firing in the workflow's execution history.
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