coldHat MCP

An MCP server that allows AI assistants to fetch and adhere to specific behavioral rules (hats) defined by GitHub users. It enables agents to read public hat.md files, verify rule integrity via seals, and stack multiple rule sets for complex task execution.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by F-Keys Creative LLC

MCP endpoint (Streamable HTTP)

https://coldhat.f-keys.com/mcp

Vendor documentation

What you can do with it

Fetch and apply AI behavioral rules from a GitHub username
Verify rule integrity and detect if instructions were cut off
Stack multiple rule sets to combine different AI personas
Grade system prompts for contradictions or redundancy

Tools advertised by the last live check:

wear_hat
wear_stack
verify_hat

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http coldhat-mcp https://coldhat.f-keys.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add coldhat-mcp --url https://coldhat.f-keys.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable coldhat-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "coldhat-mcp": {
      "url": "https://coldhat.f-keys.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "coldhat-mcp": {
      "type": "streamableHttp",
      "url": "https://coldhat.f-keys.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start coldhat-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "coldhat-mcp": {
      "type": "http",
      "url": "https://coldhat.f-keys.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http coldhat-mcp https://coldhat.f-keys.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "coldhat-mcp": {
      "url": "https://coldhat.f-keys.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "coldhat-mcp": {
      "serverUrl": "https://coldhat.f-keys.com/mcp"
    }
  }
}

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