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mcp/harbor
Grok

Test Card Hub for Grok

io.github.eyrockscript/test-card-hub

Sandbox test cards, Playwright tests, real-card scanner and decline codes for LATAM gateways.

client:Grok transport:stdio runtime:npm

Install Test Card Hub in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "test-card-hub": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "test-card-hub-mcp"
      ],
      "env": {
        "TEST_CARD_HUB_BACKUP": "<TEST_CARD_HUB_BACKUP>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Test Card Hub in other clients

Test Card Hub MCP server