Postedly for Grok
com.postedly/send
Prepare physical mail and fax quotes, review before payment, and track orders with OAuth.
client:Grok
transport:streamable-http
Install Postedly in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"send": {
"type": "http",
"url": "https://postedly.com/mcp/send"
}
}
}
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