Best UI reference MCP servers: Refcat, Mobbin and Refero compared
Three UI reference libraries publish an MCP server your AI coding agent can search while it builds. Here is how they compare on sign-in, free access, what the tools return and usage limits, from each company's own documentation.No credit card requiredMCP
MCP servers side by side
| Features | Refcat MCP | Mobbin MCP | Refero MCP |
|---|---|---|---|
| Server URL | https://mcp.refcat.app/mcp | https://api.mobbin.com/mcp | https://api.refero.design/mcp |
| Sign-in | API key in a Bearer header | OAuth sign-in in the browser | OAuth or Bearer token |
| Tools | 23 tools | 8 tools | 10 tools |
| Usage limits | 30–300 requests/min and 2,000–60,000 catalog items/day, by plan | No limits during the beta; limits will apply later | 8,000 tool calls per month per user |
| Included in the free plan | Yes | No | No |
| Screen search | Yes | Yes | Yes |
| Flow search | Yes | Yes | Yes |
| Screen images returned to the agent | Yes | Yes | Yes |
| Product emails | Yes | Not listed | Not listed |
| Search by screenshot | Yes | Not listed | Not listed |
| Similar screens | Yes | Not listed | Yes |
| Save references from the agent | Yes | Yes | Not listed |
Page Flows: we found no public MCP server on pageflows.com or its pricing page, checked on October 29, 2026.
Stop designing from a blank canvas. Brief your agent.
Give your project references from real productsFree · No credit card required
Each server's details come from its own documentation, checked on October 29, 2026. "Not listed" means we could not find it there. Sources: mobbin.com/mcp, docs.mobbin.com/mcp/features, github.com/mobbin/mobbin-mcp-server, mobbin.com/pricing, doc.refero.design/mcp/getting-started, doc.refero.design/mcp/tools, doc.refero.design/help/plans, pageflows.com/pricing
Mobbin, Refero and Page Flows are trademarks of their respective owners. Refcat is not affiliated with them.