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channel3-shopping-mcp-app.md

Channel3 Shopping MCP App

MCP App · UI in chat
from"channel3-ai"
2

Channel3 maintains this hosted shopping server for searching products and comparing retailer offers. search_products and get_products attach ui://storefront/app.html, which supported MCP Apps hosts render as an interactive storefront rather than a plain tool response.

Not for: Running a local shopping server or guaranteed unlimited anonymous use. The repository documents a hosted endpoint, free-tier limits and an optional API key for higher limits and affiliate attribution.

Source and setup verified on 2026-11-05

Productivity
shoppingproduct searchpricesstorefront
View on GitHubVisit Website

Quick facts

Maintainer
Channel3 (official)
Endpoint
https://mcp.trychannel3.com/
Transport
Stateless Streamable HTTP
Authentication
None for free tier; optional X-API-Key
UI evidence
ui://storefront/app.html via ext-apps

What you can do

  • Search products across retailers
  • Retrieve current product details and offers
  • Use gift, price-check and dupe-finding prompts
  • Browse result cards in an interactive storefront
  • Add an API key for higher limits and affiliate attribution

Requirements

  • A client that can connect to a remote Streamable HTTP MCP endpoint
  • No account for anonymous free-tier use
  • An MCP Apps-compatible host for the storefront UI
  • Optional Channel3 API key for higher limits
setup.md
# 1. Add the remote endpoint

Register https://mcp.trychannel3.com/ as a Streamable HTTP server. There is no SSE endpoint.

# 2. Optional: add an API key

Create a key in the Channel3 dashboard and send it as X-API-Key to lift the anonymous free-tier limit.

# 3. Search products

Call search_products or get_products; supported hosts open the associated storefront app.

# Cursor or another JSON-configured HTTP client → MCP client config
{
  "mcpServers": {
    "Channel3": {
      "url": "https://mcp.trychannel3.com/"
    }
  }
}

Claude connectors, ChatGPT developer mode and Codex also accept the same hosted endpoint through their remote-MCP setup flows.

Always confirm the latest setup instructions with the maintainer before installing.

>Questions

Does Channel3 require an account or API key?

No for the documented anonymous free tier. An optional key raises limits and can attribute affiliate clicks.

Is the storefront a real embedded MCP App?

Yes. The source registers ui://storefront/app.html and attaches it to the product search and retrieval tools with ui.resourceUri.

Can I run this repository locally?

The public README documents the hosted endpoint rather than a supported local install. Connect to the hosted Streamable HTTP URL.

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