io.github.levnikolaevich/hex-ssh-mcp

Hex SSH

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

Token-efficient SSH MCP with hash-verified files and persistent tmux sessions. 14 tools.

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

14tools

9.2ktokens in Claude Opus 5.5

4.6 %of Claude's 200k window

3.7×the median server

438 msto initialize

61 msto list tools

Run it: npx -y @levnikolaevich/hex-ssh-mcp@1.9.2 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: hex-ssh-mcp 1.9.2
Capabilities: tools
Instructions: none
Of a 1M window: 0.9 % of a 1M context window
Count: 9.2k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 9.4k. The o200k_base estimate is 5.1k. Counted again when the tool definitions change. Method.
Repository: https://github.com/levnikolaevich/claude-code-skills
Registry: active, updated 2026-05-19 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.82×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
ssh-edit-block	840	462	9 %
ssh-upload	758	417	8 %
ssh-search-code	751	413	8 %
ssh-session-read	729	401	8 %
ssh-read-lines	722	397	8 %

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

Servers that mention persistent or efficient.

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.