io.github.SmartMobileHouse/vat-whitelist-mcp

VAT White List (Poland)

Is the VAT White List (Poland) MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-12.

Look up Polish VAT taxpayers by NIP, REGON or bank account and verify account associations.

alive probed 2026-11-15 · unchanged since 2026-11-12

5tools

970tokens in Claude Opus 5.5

0.5 %of Claude's 200k window

0.4×the median server

1.4 sto initialize

4 msto list tools

Run it: uvx vat-whitelist-mcp@0.1.1 (stdio, probed in a container with the network off)
Host: pypi.org
Reports itself as: vat-whitelist
Capabilities: prompts, resources, tools
Instructions: none
Of a 1M window: <0.1 % of a 1M context window
Count: 970 tokens in Claude Opus 5.5, exact, measured 2026-10-29. With the Claude Code prefix mcp__…__ on each tool name: 1.1k. The o200k_base estimate is 512. Counted again when the tool definitions change. Method.
Repository: https://github.com/SmartMobileHouse/vat-whitelist-mcp
Registry: active, updated 2026-11-04 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.89×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
search_bulk	277	146	29 %
check_bank_account	263	139	27 %
search_by_bank_account	150	79	15 %
search_by_regon	144	76	15 %
search_by_nip	136	72	14 %

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

Servers that mention whitelist.

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.