Human Mailbox for Grok
com.humanmailbox/mailbox
A physical postal address in Germany for AI agents. A human opens, scans and forwards your mail.
client:Grok
transport:streamable-http
tools:32
Install Human Mailbox in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"mailbox": {
"type": "http",
"url": "https://humanmailbox.com/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
- register_mailbox
- start_demo
- express_interest
- get_prices
- get_account
- get_address
- buy_bundle
- pay_item
- announce_shipment
- list_shipments
- list_items
- get_item
- request_action
- list_requests
- get_request
- accept_quote
- cancel_request
- list_codes
- reveal_codes
- request_invoice
- list_invoices
- contact_human
- check_inquiry
- get_balance