io.github.itmarkerz/calcbloc-mcp
CalcBloc tax and salary calculator
Is the CalcBloc tax and salary calculator MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.
Take-home pay, employer cost and official tax tables for 41 countries, with sources.
alive probed 2026-11-15 · unchanged since 2026-11-14
- Run it
- npx -y calcbloc-mcp@0.1.3 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- calcbloc-mcp 0.1.3
- Capabilities
- tools
- Instructions
- 631 characters
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 2.5k tokens in Claude Opus 5.5, exact, measured 2026-11-13. With the Claude Code prefix mcp__…__ on each tool name: 2.6k. The o200k_base estimate is 1.5k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/itmarkerz/calcbloc-mcp
- Website
- https://calcbloc.com/developers
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.68×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| calculate_take_home_pay | 689 | 411 | 27 % |
| calculate_employer_cost | 635 | 379 | 25 % |
| compare_countries | 563 | 336 | 22 % |
| get_tax_tables | 484 | 289 | 19 % |
| list_countries | 163 | 97 | 6 % |
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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.