Sigistry Plugin Catalog (formerly Claude Registry) for Grok
com.clauderegistry/plugin-catalog
Renamed: prefer com.sigistry/plugin-catalog. This legacy endpoint keeps working.
client:Grok
transport:streamable-http
tools:8
Install Sigistry Plugin Catalog (formerly Claude Registry) in Grok
.mcp.json (in your project root)
{
"mcpServers": {
"plugin-catalog": {
"type": "http",
"url": "https://clauderegistry.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