io.github.perceivable/a11yscope
A11yScope
Is the A11yScope MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
WCAG 2.2 AA accessibility checks for pages and HTML, run locally in headless Chrome.
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y a11yscope-mcp@0.3.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- a11yscope 0.3.0
- Capabilities
- tools
- Instructions
- 1 055 characters
- Of a 1M window
- 0.1 % of a 1M context window
- Count
- 1.1k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 1.2k. The o200k_base estimate is 660. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/perceivable/a11yscope
- Website
- https://perceivable.github.io/
- Registry
- active, updated 2026-10-14 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.72×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| scan_page | 513 | 299 | 45 % |
| scan_html | 506 | 295 | 45 % |
| list_rules | 113 | 66 | 10 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- Pellet io.github.pelletfi/mcp · crashed on start
- Roast My Design System io.github.pencilrebel/roast-my-design-system · alive
- pendpost io.github.pendpost/pendpost · crashed on start
- io.github.pepesto-solutions/pepesto-mcp · alive
- Perceptdot Core io.github.perceptdot/core · alive
- Perceptdot GA4 io.github.perceptdot/ga4 · crashed on start
- Perceptdot GitHub io.github.perceptdot/github · alive
- Perceptdot Sentry io.github.perceptdot/sentry · alive
Servers that mention accessibility or headless.
- Crane Ledger ai.craneledger/crane-ledger · needs auth
- ai.uxbert/cms · needs auth
- Sitejar Web Compliance Scanner app.sitejar/mcp · needs auth
- shelf-smoke — url smoke / headless QA co.kymac.shelf/shelf-smoke · no DNS
- com.benriscore/api · needs auth
- Chateaupedia com.chateaupedia/chateaux · alive
- Dataddo Data to AI com.dataddo/mcp-data · needs auth
- Gachi Data API — Japan Station & Accessibility Data com.gachi-tokusuru/japan-data-api · 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.