Prism — Crossdeck MCP Server

What the code does

We read the source, 1 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

    return fs.readFileSync(path.join(UI_DIR, name), "utf8");

    body.innerHTML = sentence + cards +

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

claude mcp add prism --transport http https://api.cross-deck.com/mcp

{
  "mcpServers": {
    "prism": {
      "url": "https://api.cross-deck.com/mcp"
    }
  }
}

[mcp_servers.prism]
url = "https://api.cross-deck.com/mcp"

{
  "mcpServers": {
    "prism": {
      "url": "https://api.cross-deck.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "prism": {
      "url": "https://api.cross-deck.com/mcp"
    }
  }
}

This one needs environment variables set before it will start: CROSSDECK_SECRET_KEY (Your Crossdeck secret key (cd_sk_…) from the dashboard → API keys. Server-side only; never a publishable key.), CROSSDECK_API_BASE (Override the API base URL (e.g. for sandbox). Optional.). The author declared them in the registry entry; get the values from the project itself.

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