mcpcost

io.github.aurelio-nakamura/cmdxray

cmdxray

Is the cmdxray MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

Offline MCP server: explains shell commands token-by-token and flags destructive ones for AI agents.

alive probed 2026-11-14 · unchanged since 2026-10-30

3tools
734tokens in Claude Opus 5.5
0.4 %of Claude's 200k window
0.3×the median server
74 msto initialize
5 msto list tools
Run it
npx -y cmdxray@0.26.1 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
cmdxray 0.26.1
Capabilities
tools
Instructions
none
Of a 1M window
<0.1 % of a 1M context window
Count
734 tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 764. The o200k_base estimate is 443. Counted again when the tool definitions change. Method.
Repository
https://github.com/aurelio-nakamura/cmdxray
Website
https://aurelio-nakamura.github.io/cmdxray/
Registry
active, updated 2026-09-19 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.66×.

Tool≈ Claude tokenso200k estimateShare of this server
lint_script28817439 %
check_command_safety24514833 %
explain_command20012127 %

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Servers that mention destructive or commands.

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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.

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Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

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