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Stunt Double MCP Server

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answering

Stunt Double is answering right now. Last checked 11 min ago. Last commit 16 Aug 2026.

Deploy AI user personas to validate user journeys at scale. Find UX friction before real users do.

Uptime history 47 days of history · worst day 22%
47 days agonow
23.1%
Uptime 24h
21 of 91 checks
—
Tools
hidden behind auth
851 ms
Response time
average over 24h
1
Stars
last commit 16 Aug 2026

Stunt Double does not always answer

Over the last week it answered 69.0% 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 11 min ago.

run in your terminal
claude mcp add mcp-server --transport http https://app.stuntdouble.io/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp-server": {
      "url": "https://app.stuntdouble.io/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp-server]
url = "https://app.stuntdouble.io/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mcp-server": {
      "url": "https://app.stuntdouble.io/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mcp-server": {
      "url": "https://app.stuntdouble.io/api/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URLTransportStateLatencyChecked
https://app.stuntdouble.io/api/mcp streamable-http sign-in 437 ms 11 min ago

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Stunt Double — questions

Answers built from our own checks of this server.

Why is there no tool list for Stunt Double?
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: 23.1% of checks in the last 24 hours got a reply.
Is Stunt Double working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 21 of 91 checks got a reply (23.1%), average response time 851 ms. The bar chart above shows every period we have measured.
How do I connect Stunt Double?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.
How do you sign in to Stunt Double?
No API key is involved. Stunt Double answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.
How fast is Stunt Double?
It answers our handshake in 851 ms on average, which is faster than 12% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Stunt Double open source?
Yes — it is published under the MIT licence, written in JavaScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.