coldHat
Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~234Tokens (tool definitions)
~1.3 KBTypical response size
Minimal attention impact (0.18% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"coldhat": {
"url": "https://coldhat.f-keys.com/mcp"
}
}
}Remote endpoints
https://coldhat.f-keys.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢wear_hat(user, hat)
Fetch a person's coldHat: their working rules, voice and dated facts. Call it when the user asks to put on a hat or says "open sesame" with a name or a coldhat.f-keys.com/u/ address, then follow the hat for the rest of the conversation, starting with the first reply it describes.
Input Schema
{
"type": "object",
"properties": {
"user": {
"type": "string",
"pattern": "^[a-z\\d](?:[a-z\\d]|-(?=[a-z\\d])){0,38}$",
"description": "GitHub user name of the hat's owner, for example vince-gonzalez"
},
"hat": {
"description": "A named hat from the owner's hats/ folder; omit for their main hat",
"type": "string",
"pattern": "^[a-z\\d](?:[a-z\\d]|-(?=[a-z\\d])){0,63}$"
}
},
"required": [
"user"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}Community
Evidence
Recent observations
verifiedversion not recorded1 tools