io.github.ryudi84/jwt

jwt-forge

Is the io.github.ryudi84/jwt MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

MCP server for JWT decoding and inspection

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

2tools

250tokens in Claude Opus 5.5

0.1 %of Claude's 200k window

0.1×the median server

193 msto initialize

5 msto list tools

Run it: npx -y jwt-forge-mcp@1.0.3 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: jwt-forge 1.0.0
Capabilities: tools
Instructions: 62 characters
Of a 1M window: <0.1 % of a 1M context window
Count: 250 tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 266. The o200k_base estimate is 138. Counted again when the tool definitions change. Method.
Repository: https://github.com/ryudi84/sovereign-mcp-servers
Registry: active, updated 2026-02-25 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.81×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
validate_jwt_format	138	76	55 %
decode_jwt	112	62	45 %

These registry entries have the same tool names and the same schema sizes.

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

Servers that mention ryudi84.

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.