Attic

MCP server · by atticcapital

Other Tools npmStreamable HTTP v0.1.1

Weekly Attic Capital reports for coins, cards, cars, and art.

Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 0.1.1

npm
npx -y attic-mcp

npm
npx -y attic-mcp@0.1.1

Streamable HTTP
https://mcp.atticcapital.com/mcp

Setup by client

Pick your client — the config below is generated for this server (both local and hosted-endpoint forms). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp@0.1.1"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

Remote (hosted) endpoint

https://mcp.atticcapital.com/mcp

Claude Desktop: Settings → Connectors → Add custom connector, paste this URL, and provide: X-Attic-Key.

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env ATTIC_API_KEY=<YOUR_ATTIC_API_KEY> attic -- npx -y attic-mcp

claude mcp add --env ATTIC_API_KEY=<YOUR_ATTIC_API_KEY> attic -- npx -y attic-mcp@0.1.1

terminal

claude mcp add --transport http attic https://mcp.atticcapital.com/mcp --header "X-Attic-Key: Bearer <YOUR_X_ATTIC_KEY>"

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp@0.1.1"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

.cursor/mcp.json (hosted endpoint)

{
  "mcpServers": {
    "attic": {
      "url": "https://mcp.atticcapital.com/mcp",
      "headers": {
        "X-Attic-Key": "<YOUR_X_ATTIC_KEY>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp@0.1.1"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json (hosted endpoint)

{
  "servers": {
    "attic": {
      "type": "http",
      "url": "https://mcp.atticcapital.com/mcp",
      "headers": {
        "X-Attic-Key": "<YOUR_X_ATTIC_KEY>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

{
  "mcpServers": {
    "attic": {
      "command": "npx",
      "args": [
        "-y",
        "attic-mcp@0.1.1"
      ],
      "env": {
        "ATTIC_API_KEY": "<YOUR_ATTIC_API_KEY>"
      }
    }
  }
}

mcp_config.json (hosted endpoint)

{
  "mcpServers": {
    "attic": {
      "serverUrl": "https://mcp.atticcapital.com/mcp",
      "headers": {
        "X-Attic-Key": "<YOUR_X_ATTIC_KEY>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

ATTIC_API_KEY secret — Optional Attic Beyond API key. Sent as X-Attic-Key. Public Headlines work without it.
X-Attic-Key secret header — Optional Attic Beyond API key. Omit for public Headlines, articles, episodes, and gatherings.

About this server

Distributed as npm, Streamable HTTP, listed under Other Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

How do I install Attic?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Attic free to use?

The MCP server itself is free to install. Any third-party service it calls may require its own API key and account.

Which clients support Attic?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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Publish this server? Link back with a badge on your README or site — copy either snippet.

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