mcpcost

io.github.SamuelDharshi/proofmark-demo-server

filesystem-demo

Is the io.github.SamuelDharshi/proofmark-demo-server MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-07.

A small filesystem MCP server used to demonstrate Proofmark attestation.

alive probed 2026-11-14 · unchanged since 2026-11-07

2tools
156tokens in Claude Opus 5.5
<0.1 %of Claude's 200k window
0.1×the median server
285 msto initialize
4 msto list tools
Run it
npx -y proofmark-demo-server@1.0.0 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
filesystem-demo 1.0.0
Capabilities
tools
Instructions
none
Of a 1M window
<0.1 % of a 1M context window
Count
156 tokens in Claude Opus 5.5, exact, measured 2026-11-07. With the Claude Code prefix mcp__…__ on each tool name: 184. The o200k_base estimate is 79. Counted again when the tool definitions change. Method.
Repository
https://github.com/SamuelDharshi/Proofmark
Registry
active, updated 2026-11-06 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.97×.

Tool≈ Claude tokenso200k estimateShare of this server
read_file794051 %
list_dir773949 %

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Servers that mention proofmark or attestation or demonstrate.

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