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coldHat

R0· no sign-in

Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.

v0.1.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality85good
Trust97of 100
Uptime, 30 days100%
Latency p50326 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "coldhat": {
      "type": "http",
      "url": "https://coldhat.f-keys.com/mcp"
    }
  }
}
claude mcp add --transport http coldhat https://coldhat.f-keys.com/mcp
[mcp_servers.coldhat]
url = "https://coldhat.f-keys.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "coldhat": {
      "type": "remote",
      "url": "https://coldhat.f-keys.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "coldhat": {
      "type": "http",
      "url": "https://coldhat.f-keys.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=coldhat&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY29sZGhhdC5mLWtleXMuY29tL21jcCJ9"
}
{
  "servers": {
    "coldhat": {
      "type": "http",
      "url": "https://coldhat.f-keys.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "coldhat": {
      "httpUrl": "https://coldhat.f-keys.com/mcp"
    }
  }
}
extensions:
  "coldhat":
    enabled: true
    name: "coldhat"
    type: streamable_http
    uri: "https://coldhat.f-keys.com/mcp"
    timeout: 300

Quality 85 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations3 of 3 tools declare readOnlyHint or destructiveHint
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: wear_stack (destructiveHint, idempotentHint); verify_hat (destructiveHint, idempotentHint); wear_hat (destructiveHint, idempotentHint)
  • pass
    tools.token_costabout 526 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changes2 tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 526 tokens to load them all · tool set d5b0fe270e49 · tools last changed 2026-10-15 · checked 2026-10-19 10:20 UTC

Tool changes

  • verify_hatadded

    Check whether a reply wore the current version of a hat: compares the hat code and seal the reply quotes with the hat as served now. Answers verified, stale (an older or cached version), cut-off, seal-missing, seal-wrong, pasted or not-worn.

  • wear_stackadded

    Fetch any coldHat address: a person's hat, one of Fabric's patterns, a prompts.chat prompt, or up to three of them stacked with "+". Call it when the user says "open sesame" with a coldhat.f-keys.com address containing fabric/, prompts/ or +, then follow the result for the rest of the conversation.

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance90
liveness100
freshness100
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-8d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://coldhat.f-keys.com/mcp streamable-httpnoneyes100%326 ms2025-11-252026-10-19

Tools (3)

verify_hatread-onlyCheck whether a reply wore the current version of a hat: compares the hat code and seal the reply quotes with the hat as served now. Answers verified, stale (an older or cached version), cut-off, seal-missing, seal-wrong, pasted or not-worn.
wear_hatread-onlyFetch 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.
wear_stackread-onlyFetch any coldHat address: a person's hat, one of Fabric's patterns, a prompts.chat prompt, or up to three of them stacked with "+". Call it when the user says "open sesame" with a coldhat.f-keys.com address containing fabric/, prompts/ or +, then follow the result for the rest of the conversation.

Schemas: list_tools.

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Official server.json
{
  "name": "io.github.vince-gonzalez/coldhat",
  "title": "coldHat",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://coldhat.f-keys.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/vince-gonzalez/coldhat",
    "source": "github"
  },
  "websiteUrl": "https://coldhat.f-keys.com",
  "description": "Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code."
}