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Mockupper MCP Server

answering

Mockupper is answering right now. Last checked 5 min ago.

Turn raw screenshots into professional device mockups & app store visuals in seconds with AI.

Uptime history 91 days of history · worst day 95%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
182 ms
Response time
average over 24h
authentication required
Access
sse

Mockupper does not always answer

Over the last week it answered 99.4% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

run in your terminal
claude mcp add mockupper --transport sse https://mockupper.damdafa.com/mcp/server/sse
Settings → Connectors → Add custom connector, then paste this address
https://mockupper.damdafa.com/mcp/server/sse
~/.codex/config.toml
[mcp_servers.mockupper]
url = "https://mockupper.damdafa.com/mcp/server/sse"
.cursor/mcp.json
{
  "mcpServers": {
    "mockupper": {
      "url": "https://mockupper.damdafa.com/mcp/server/sse"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mockupper": {
      "type": "sse",
      "url": "https://mockupper.damdafa.com/mcp/server/sse"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://mockupper.damdafa.com/mcp/server/sse sse needs auth 253 ms 5 min ago

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Mockupper — questions

Answers built from our own checks of this server.

Why is there no tool list for Mockupper?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.
Is Mockupper working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 182 ms. The bar chart above shows every period we have measured.
How do I connect Mockupper?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does Mockupper need an API key?
Yes. Every time we knock, Mockupper answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Mockupper?
It answers our handshake in 182 ms on average, which is faster than 76% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.