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Working with Item and AuctionItem interfaces in zAuctionHouse

zAuctionHouse uses a clean abstraction layer for items. Understanding the Item and AuctionItem interfaces is essential for API integration.

Sale Architecture

All sales within zAuctionHouse are managed through the Item interface. This interface serves as the foundation for every type of transaction in the plugin.

Each sale type extends the Item interface to add its specific behavior and data. Currently, the plugin implements AuctionItem for standard fixed-price listings. Future updates will introduce additional sale types that follow the same pattern:

  • AuctionItem - Fixed-price instant purchase listings (currently available)
  • BidItem - Auction-style listings with bidding system (planned)
  • RentItem - Rental listings with time-based access (planned)

This inheritance model ensures consistent behavior across all sale types while allowing each implementation to define its own specific logic and properties.

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GroupeZ MCP

Documentation in your AI

MCP lets your AI search GroupeZ documentation and read current examples to help you configure your plugins.

Read-only · No documentation API key needed

1. Copy the server URL

Transport: HTTP (Streamable HTTP). Authentication: none. Your tool uses its own model and subscription limits.

  1. Open Plugins in ChatGPT on the web, then + → Add custom MCP server.
  2. Name it ‘GroupeZ Documentation’, paste the URL above and choose ‘No authentication’. Create and install the plugin.
  3. In a conversation, type @ and select the plugin before asking. If needed, enable search, get_page and list_pages in its settings.
Official setup guide

3. Ask a question

Use GroupeZ MCP to help me create a zMenu inventory. Search relevant pages, read the examples and cite your sources.
Other clients and troubleshooting

For clients using mcpServers, adapt this example to their format:

{
  "mcpServers": {
    "groupez-docs": {
      "url": ""
    }
  }
}

Available tools are search, get_page and list_pages. Refresh the connector’s tools after updates. If your AI cannot access them, check that the connector is enabled in the conversation and your account allows custom MCP servers. Opening the URL in a browser is not an MCP test.