Server data from the Official MCP Registry
Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.
About
Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.
Remote endpoints: streamable-http: https://coldhat.f-keys.com/mcp
Security Report
Valid MCP server (1 strong, 2 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry. Trust signals: trusted author (4/4 approved).
1 tool verified · Open access · No issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-vince-gonzalez-coldhat": {
"url": "https://coldhat.f-keys.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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║ will another model keep your rules? ║
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coldHat puts working rules on any AI chat in one line. Type this into Claude, ChatGPT or Grok:
open sesame coldhat.f-keys.com/u/vince-gonzalez/frontier
The assistant reads the hat, answers with its hat code to prove it read it, and works by those rules for the rest of the chat. Live at coldhat.f-keys.com.
Every hat ends with a seal. If the assistant can't quote it, the hat was cut off, and it tells you.
Addresses
| You want to | Type this after open sesame |
|---|---|
| Wear a person's hat | coldhat.f-keys.com/u/<github-user> or .../u/<github-user>/<hat> |
| Wear one of Fabric's patterns | coldhat.f-keys.com/fabric/extract_wisdom |
| Wear a prompts.chat prompt | coldhat.f-keys.com/prompts/linux-terminal |
| Stack up to three, later layers winning | coldhat.f-keys.com/u/vince-gonzalez/editor+fabric/analyze_claims |
| Merge a stack by slot instead of piling it up | coldhat.f-keys.com/amp/fabric/extract_ideas+fabric/analyze_claims |
Every reply starts with the hat mark and code, for example 🎩💨⛄🔬 Hat's on · b7d19023:
a top hat, a gust, Frosty, then one icon per layer.
Apps that take connectors can add https://coldhat.f-keys.com/mcp once and call any of
these by name (tools wear_hat and wear_stack). A chat that can't browse can still wear
a hat: Copy hat on coldhat.f-keys.com, then paste.
Starter hats
| Hat | Type this |
|---|---|
| Code reviewer: verdict first, findings by severity with line, failure and fix | open sesame coldhat.f-keys.com/u/vince-gonzalez/reviewer |
| Grant writer: rubric first, every number sourced, every limit met | open sesame coldhat.f-keys.com/u/vince-gonzalez/grants |
| Plain-English editor: shorter, clearer, still your voice | open sesame coldhat.f-keys.com/u/vince-gonzalez/editor |
| Frontier: mechanical register, rules over manners | open sesame coldhat.f-keys.com/u/vince-gonzalez/frontier |
Make your own
A hat is a hat.md in a public GitHub repository named coldhat, so only its owner can
change it. Extra hats go in hats/<name>.md and live at /u/<user>/<name>. Write one at
coldhat.f-keys.com/make, bring the instructions you
already keep for other assistants at coldhat.f-keys.com/import,
or start from coldhat-starter.
Facts under ## Status carry a date and a shelf life
(- label: value · as of YYYY-MM-DD · check after N days). The server checks them against
today, and the assistant asks about any that have gone stale before using them.
Measured, not assumed
Safety
A hat is instructions, not a credential, and open sesame is not a password. Every hat
page tells the assistant to ignore it unless the person asked for it, and never to ask for
passwords, keys, codes or payment details. Layers from Fabric and prompts.chat credit their
authors; prompts written to make a model drop its rules are not served.
Report a hat.
The coldHat server and merge engine are proprietary. This repository holds the public hats, the format, and the results.
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║ ╚═╝ ╚═╝ ╚═╝╚══════╝ ╚═╝ ╚══════╝ ║
║ ║
║ · C R E A T I V E · ║
║ ║
║ ──────────────────────────────────────── ║
║ ║
║ Vincent Gonzalez ║
║ f-keys.com ║
║ ORCID 0009-0005-3640-014X ║
║ ║
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Part of F-Keys — independent hardware, software and internet products. See the working log and live status.
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