io.github.CloudCorpRecords/wattindex

wattindex

Is the io.github.CloudCorpRecords/wattindex MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-03.

GPU energy per million output tokens by model and GPU, with grid carbon intensity.

alive probed 2026-11-14 · unchanged since 2026-11-03

8tools

1.3ktokens in Claude Opus 5.5

0.7 %of Claude's 200k window

0.5×the median server

241 msto initialize

4 msto list tools

Run it: npx -y @reneturcios/wattindex@0.1.0 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: wattindex 0.1.0
Capabilities: tools
Instructions: none
Of a 1M window: 0.1 % of a 1M context window
Count: 1.3k tokens in Claude Opus 5.5, exact, measured 2026-11-03. With the Claude Code prefix mcp__…__ on each tool name: 1.4k. The o200k_base estimate is 731. Counted again when the tool definitions change. Method.
Repository: https://github.com/CloudCorpRecords/wattindex
Registry: active, updated 2026-11-02 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.79×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
estimate	468	262	36 %
energy_per_million_tokens	211	118	16 %
compare_gpus	143	80	11 %
grid_intensity	136	76	10 %
concurrency_curve	123	69	9 %

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

Servers that mention intensity or million.

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.