io.github.any1tan/wattscalc-mcp
Watts Calculator
Is the Watts Calculator MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.
Watts, volts, amps, kWh and electricity cost calculator tools for AI assistants.
alive probed 2026-11-15 · unchanged since 2026-11-01
- Bundle
- https://github.com/any1tan/wattscalc-mcp/releases/download/v1.0.0/wattscalc-mcp.mcpb (MCPB, for a client that installs bundles; probed in a container with the network off)
- Host
- github.com
- Reports itself as
- wattscalc 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 558 tokens in Claude Opus 5.5, exact, measured 2026-11-01. With the Claude Code prefix mcp__…__ on each tool name: 600. The o200k_base estimate is 312. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/any1tan/wattscalc-mcp
- Website
- https://wattscalc.com
- Registry
- active, updated 2026-10-13 · 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 |
|---|---|---|---|
| watts_to_amps | 199 | 111 | 36 % |
| energy_cost | 195 | 109 | 35 % |
| electrical_power | 165 | 92 | 29 % |
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Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.