io.github.microtoll/pqc-scan

pqc-scan

Is the pqc-scan MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

The cryptography a JavaScript or TypeScript codebase uses, and which a quantum computer would break.

alive probed 2026-11-15 · unchanged since 2026-10-31

1tools

679tokens in Claude Opus 5.5

0.3 %of Claude's 200k window

0.3×the median server

82 msto initialize

2 msto list tools

Run it: npx -y @microtoll/pqc-scan@0.3.3 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: pqc-scan 0.3.3
Capabilities: tools
Instructions: 397 characters
Of a 1M window: <0.1 % of a 1M context window
Count: 679 tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 690. The o200k_base estimate is 433. Counted again when the tool definitions change. Method.
Repository: https://github.com/microtoll/pqc-scan
Website: https://github.com/microtoll/pqc-scan#readme
Registry: active, updated 2026-10-06 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.57×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
pqc_scan	679	433	100 %

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

Servers that mention scan.

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.