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Instruments for what a model cannot know on its own: time, randomness, DNS, hashes, receipts.
Coolant is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 93/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding Coolant to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add run.coolant/coolant https://coolant.run/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-09-16T13:42:36.303214Z",
"publishedAt": "2026-09-16T13:42:36.303214Z",
"statusChangedAt": "2026-09-16T13:42:36.303214Z"
}
},
"server": {
"name": "run.coolant/coolant",
"title": "Coolant",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://coolant.run/mcp",
"type": "streamable-http",
"headers": [
{
"name": "Authorization",
"isSecret": true,
"description": "Optional. Bearer <key> for the eleven key-tier instruments (regex, robots, room, notary, attest, mailbox, lease, hashurl, dns, cert, ping). Take a key at https://coolant.run/t/key — $0.01 for a day, settled over x402 on Base, no account. The other sixteen instruments need nothing."
}
]
}
],
"version": "1.2.0",
"websiteUrl": "https://coolant.run",
"description": "Instruments for what a model cannot know on its own: time, randomness, DNS, hashes, receipts."
}
}