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Perfect Clock MCP Server

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not responding

Perfect Clock is listed as active in the registry but did not answer our last check. It exposes 2 tools.

Find meeting times across time zones and compare working hours.

Uptime history 14 days of history · worst day 0%
14 days agonow
14.3%
Uptime 24h
13 of 91 checks
2
Tools
read from the server
349 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 2

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 6 November 2026. No other catalogue keeps this.

6 Nov 2 tool descriptions were rewritten find_meeting_windows, plan_meeting_schedule

Perfect Clock does not always answer

Over the last week it answered 6.4% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

run in your terminal
claude mcp add perfect-clock --transport http https://perfectclock.cc/mcp
Settings → Connectors → Add custom connector, then paste this address
https://perfectclock.cc/mcp
~/.codex/config.toml
[mcp_servers.perfect-clock]
url = "https://perfectclock.cc/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "perfect-clock": {
      "url": "https://perfectclock.cc/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "perfect-clock": {
      "type": "http",
      "url": "https://perfectclock.cc/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

meeting
find_meeting_windows
Finds when people in other time zones can meet, when the time is not decided yet: the windows on each day when all participants are within their working hours, accounting for weekends, public holidays and daylight-saving changes, and one suggested start time that fits the most days. Saves that suggested time on those days for 30 days and returns a private perfectclock.cc/s/... link that opens it in Perfect Clock; each call saves a new schedule with its own link.
plan
plan_meeting_schedule
Plans a one-off or recurring meeting with people in other time zones when its time is known (e.g. "every other Tuesday at 10:00 Berlin time with Anna in Tbilisi"). Expands it into concrete dates and shows each one in every participant's local time, with working-hours checks, public holidays and daylight-saving shifts. Saves the schedule for 30 days and returns a private perfectclock.cc/s/... link that opens it in Perfect Clock; each call saves a new schedule with its own link.

Endpoints

URLTransportStateLatencyChecked
https://perfectclock.cc/mcp streamable-http answering 111 ms 15 min ago

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Perfect Clock — questions

Answers built from our own checks of this server.

What can Perfect Clock do?
It exposes 2 tools, read directly from the server on our last check. Among them: find_meeting_windows, plan_meeting_schedule. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Perfect Clock working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 13 of 91 checks got a reply (14.3%), average response time 349 ms. The bar chart above shows every period we have measured.
The registry lists Perfect Clock as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Perfect Clock?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Perfect Clock need an API key?
No. Perfect Clock completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Perfect Clock?
It answers our handshake in 349 ms on average, which is faster than 39% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.