io.github.sylvesterworks/nostalgiaui

nostalgiaui

Is the io.github.sylvesterworks/nostalgiaui MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-27.

Design tokens, component source and WCAG checks for rendering any UI in a past design era.

alive probed 2026-11-14 · unchanged since 2026-10-27

6tools

1.5ktokens in Claude Opus 5.5

0.7 %of Claude's 200k window

0.6×the median server

492 msto initialize

11 msto list tools

Run it: npx -y @nostalgiaui/mcp@0.1.3 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: nostalgiaui 0.0.0
Capabilities: tools
Instructions: none
Of a 1M window: 0.1 % of a 1M context window
Count: 1.5k tokens in Claude Opus 5.5, exact, measured 2026-10-26. With the Claude Code prefix mcp__…__ on each tool name: 1.6k. The o200k_base estimate is 856. Counted again when the tool definitions change. Method.
Repository: https://github.com/sylvesterworks/nostalgia-ui
Website: https://nostalgiaui.sylvester.works
Registry: active, updated 2026-10-26 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.75×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
get_tokens	359	205	24 %
get_component	347	198	23 %
check_contrast	315	180	21 %
import_vscode_theme	224	128	15 %
list_eras	130	74	9 %

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

Servers that mention component or rendering.

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.