com.a11ychk/mcp
A11y Check
Is the A11y Check MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Web accessibility scanning (WCAG 2.2 AA + KWCAG 2.2) with Korean remediation guides
alive probed 2026-11-15 · unchanged since 2026-10-30
6tools
2.1ktokens in Claude Opus 5.5
1.1 %of Claude's 200k window
0.8×the median server
1.9 sto initialize
14 msto list tools
- Run it
- npx -y @a11ychk/mcp@0.2.5 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- a11ychk 0.2.5
- Capabilities
- tools
- Instructions
- 438 characters
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 2.1k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 2.2k. The o200k_base estimate is 1.2k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/IsaacEryn/a11ychk
- Website
- https://www.a11ychk.com
- Registry
- active, updated 2026-10-23 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.80×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| kwcag_checkpoint | 446 | 247 | 21 % |
| scan_dir | 399 | 221 | 19 % |
| scan_page | 383 | 212 | 18 % |
| crawl_sample | 314 | 174 | 15 % |
| scan_pages | 298 | 165 | 14 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- Workix co.workix/mcp · alive
- coffee.402/mcp · alive
- 17NAS Network Tools com.17nas/network-tools · no executable
- com.636865636b73756d/mcp-v1 · alive
- com.abutly/abutly-tools · alive
- AccessibilityBrief com.accessibilitybrief/mcp · alive
- AccessLumens com.accesslumens/mcp · alive
- com.accuracite/accuracite-mcp · alive
Servers that mention check or a11y.
- Business Contact Finder agency.ottobot/business-contact-finder · alive
- groTAX by Grovisor ae.grovisor/grotax · alive
- Agentic Fabrication Network (AFN) ai.agenticfabricationnetwork/ufp · alive
- Plumbline - Contractor License Checks ai.agentlookups/plumbline · alive
- ai.agentlookups/overassessed · alive
- Alpic ai.alpic.mcp/alpic-mcp · needs auth
- One-Page Readiness Check — 10 Signals, Arabic or English ai.advisorsai/store-readiness · alive
- ai.aivonic/mcp · 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.