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Grok

FiscalHub MCP by usefulapi for Grok

io.usefulapi/fiscalhub

Read NF-e XML and NCM tax data, simulate totals, issue and cancel NF-e and NFC-e in FiscalHub.

client:Grok transport:streamable-http tools:9

Install FiscalHub MCP by usefulapi in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "fiscalhub": {
      "type": "http",
      "url": "https://fiscalhub.usefulapi.io/mcp"
    }
  }
}

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

What Grok can do once it is connected

FiscalHub MCP by usefulapi in other clients