io.github.ogSINGH/contrast-checker-mcp
contrast-checker
Is the io.github.ogSINGH/contrast-checker-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
MCP - WCAG 2.1 color contrast checker - contrast ratios, compliance and accessible color suggestions
alive probed 2026-11-15 · unchanged since 2026-10-30
- Run it
- npx -y contrast-checker-mcp@1.0.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- contrast-checker 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 741 tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 786. The o200k_base estimate is 414. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/ogSINGH/contrast-checker-mcp
- 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, 1.79×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| suggest_accessible_color | 277 | 155 | 37 % |
| check_contrast | 260 | 145 | 35 % |
| parse_color | 204 | 114 | 28 % |
Compare this server with others.
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- OGE UI io.github.oge-ui/mcp · alive
- io.github.oguzc/playwright-wizard-mcp · alive
- io.github.ohad6k/viberaven · alive
- StoQuant — Quantitative Stock Research io.github.ohadf2015/stoquant-mcp · needs env
Servers that mention contrast.
- ContrastAPI com.contrastcyber/api · alive
- CSS Crème com.csscreme/design-systems · alive
- FindSaunaPlunge — US cold plunge & sauna studios com.findsaunaplunge/findsaunaplunge · alive
- Craftery Developer Tools dev.craftery/tools · alive
- Northcap Signals io.github.MohamedAbdisamed/northcap-signals · no DNS
- Chart Color System io.github.socraticstatic/chart-color-system · alive
- Contrast ratio for two hex colors io.github.sadri-dridi/contrast-ok · alive
- Contrast ratio vs 4.5 for one hex on white io.github.sadri-dridi/hex-contrast-aa · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.