mcpcost

io.github.hsm-kit/hsmkit

HSM Kit

Is the HSM Kit MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-27.

Local-first Base64, Luhn, key-component XOR, and synthetic ISO-0 PIN block tools.

alive probed 2026-11-14 · unchanged since 2026-10-27

6tools
902tokens in Claude Opus 5.5
0.5 %of Claude's 200k window
0.4×the median server
229 msto initialize
8 msto list tools
Run it
npx -y @hsmkit/mcp-server@0.1.0 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
hsmkit 0.1.0
Capabilities
tools
Instructions
none
Of a 1M window
<0.1 % of a 1M context window
Count
902 tokens in Claude Opus 5.5, exact, measured 2026-10-27. With the Claude Code prefix mcp__…__ on each tool name: 962. The o200k_base estimate is 480. Counted again when the tool definitions change. Method.
Repository
https://github.com/hsm-kit/hsmkit
Website
https://hsmkit.com/
Registry
active, updated 2026-09-23 · registry entry
Changes
2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.88×.

Tool≈ Claude tokenso200k estimateShare of this server
iso0_pin_block23312426 %
luhn_calculate_check_digit1548217 %
luhn_validate1508017 %
xor_key_components1508017 %
base64_decode1095812 %

Compare this server with others.

More servers

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

Servers that mention component or synthetic.

History

We add a row when the result changes. A server with no change keeps its last row.

ProbedResultInitToolsClaudeo200k
2026-10-27 06:54alive244 ms6902480
2026-10-20 06:42alive229 ms6480

Badge for the README

mcpcost: 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.

Atom feed

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