From research
Connects Claude to the remote Ref.tools MCP server at https://api.ref.tools/mcp${REF_SCOPE:-}. Provides tools, data sources, or prompts from Ref.tools service. REF_SCOPE optional.
npx claudepluginhub melodic-software/claude-code-plugins --plugin researchAdd to your .mcp.json:
{
"mcpServers": {
"ref": {
"url": "https://api.ref.tools/mcp${REF_SCOPE:-}"
}
}
}This server connects to external services. Review the URLs it accesses before enabling.
https://api.ref.tools/mcp${REF_SCOPE:-}