io.github.mrfentmen/uptime-mcp

uptime-mcp

Is the io.github.mrfentmen/uptime-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

Check website availability, latency, and TLS certificate expiry locally. No key required.

alive probed 2026-11-14 · unchanged since 2026-10-31

2tools

241tokens in Claude Opus 5.5

0.1 %of Claude's 200k window

0.1×the median server

328 msto initialize

9 msto list tools

Run it: npx -y uptime-mcp@1.0.0 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: uptime-mcp 1.0.0
Capabilities: tools
Instructions: none
Of a 1M window: <0.1 % of a 1M context window
Count: 241 tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 265. The o200k_base estimate is 129. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/uptime-mcp
Registry: active, updated 2026-09-21 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.87×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
check	123	66	51 %
cert	118	63	49 %

Other registry entries on npmjs.com, the ones next to this name; all of them.

Servers that mention uptime.

A.U.G.U.R Synapse · Web & Research art.maddegen.agent/synapse-web · alive
co.vantaj/mcp-server · alive
com.clauxel.mcpuptimeledger/mcpuptimeledger-mcp · no DNS
Is This Site Down? com.downforjustmeoreveryone/is-it-down · alive
Uptimely com.getuptimely/uptimely · needs auth
Hitsteps Analytics and Operations com.hitsteps/analytics-operations · needs auth
com.hyperping/hyperping · alive
Kyma API com.kymaapi/kyma · needs auth

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.