Verifies a merchant storefront is legitimate before an AI agent commits payment.
To add storefront-guard to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 3 environment variables, listed below.
Install
npx -y storefront-guard-mcp-server@0.3.2Environment variables
GOOGLE_SAFE_BROWSING_API_KEYSet in your MCP configSAM_GOV_API_KEYSet in your MCP configURLHAUS_AUTH_KEYSet in your MCP configInstall with your client
claude mcp add storefront-guard --env GOOGLE_SAFE_BROWSING_API_KEY=<YOUR_GOOGLE_SAFE_BROWSING_API_KEY> --env SAM_GOV_API_KEY=<YOUR_SAM_GOV_API_KEY> --env URLHAUS_AUTH_KEY=<YOUR_URLHAUS_AUTH_KEY> -- npx -y storefront-guard-mcp-server@0.3.2
Run this in a terminal to add the server to Claude Code.
What this does
storefront-guard exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
GOOGLE_SAFE_BROWSING_API_KEY SAM_GOV_API_KEY URLHAUS_AUTH_KEY
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install storefront-guard?
Run the Claude Code command in the install section to add storefront-guard to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with storefront-guard?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to storefront-guard as well.
Does storefront-guard need an API key?
Yes. Before it can run, set these environment variables: GOOGLE_SAFE_BROWSING_API_KEY, SAM_GOV_API_KEY, URLHAUS_AUTH_KEY. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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