io.github.mrfentmen/brreg-mcp

brreg-mcp

Is the io.github.mrfentmen/brreg-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-09.

Norwegian company registry: search entities, read details and see registered roles - keyless.

alive probed 2026-11-14 · unchanged since 2026-11-09

3tools

474tokens in Claude Opus 5.5

0.2 %of Claude's 200k window

0.2×the median server

189 msto initialize

4 msto list tools

Run it: npx -y @mrfentmen/brreg-mcp@1.0.1 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: brreg-mcp 1.0.0
Capabilities: tools
Instructions: none
Of a 1M window: <0.1 % of a 1M context window
Count: 474 tokens in Claude Opus 5.5, exact, measured 2026-11-01. With the Claude Code prefix mcp__…__ on each tool name: 510. The o200k_base estimate is 253. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/awesome-servers
Registry: active, updated 2026-11-08 · 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
search_companies	193	103	41 %
company_roles	142	76	30 %
company_detail	139	74	29 %

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

Servers that mention brreg.

registry-mcp — national company registries io.github.foretak/registry-mcp · alive
Brreg No io.github.pipeworx-io/brreg-no · not MCP
Brreg pro.publifye/brreg · needs auth
io.github.hellosverre/brreg · alive
EU & Nordic Official Open-Data MCP Suite io.github.itulo/eu-nordic-open-data-mcp · alive

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.