Lob MCP by usefulapi for Grok
io.usefulapi/lob
Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.
client:Grok
transport:streamable-http
tools:18
Install Lob MCP by usefulapi in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"lob": {
"type": "http",
"url": "https://lob.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
- lob_verify_us_address
- lob_verify_intl_address
- lob_us_zip_lookup
- lob_us_autocomplete
- lob_list_postcards
- lob_get_postcard
- lob_list_letters
- lob_get_letter
- lob_list_checks
- lob_get_check
- lob_list_self_mailers
- lob_list_addresses
- lob_get_address
- lob_list_templates
- lob_create_address
- lob_create_postcard
- lob_create_letter
- lob_cancel_postcard