audit_webpage
Perform an accessibility audit on a webpage
LABSCO SUMMARY
An accessibility check runs in the same loop that is writing the markup.
Two tools, one argument each: a URL goes in and findings come back, with rule tags to narrow which families run and includeHtml when a selector alone is not enough to act on. Auditing is the whole scope — nothing here rewrites markup, and confirming a fix means auditing the changed page again, which is cheap enough that it fits inside an edit loop.
What it is
An accessibility auditing server for a URL: a full audit and a summary of the issues on a page.
What you get
- An accessibility audit of a URL, scoped by rule tags when only part of the ruleset applies
- The offending HTML alongside each finding when includeHtml is set, so a fix does not start with hunting for the element
- A summary of a page's issues, short enough to compare before and after a change
Requirements
A URL the server can reach. No account and no key. MPL-2.0.
Setup effort
One command — npx a11y-mcp
USE CASES
01
Checking a page before it ships
Run the audit against the deployed URL with the HTML included, so each finding arrives with the element behind it rather than a selector to go looking for.
02
Confirming a fix actually landed
Take the summary before and after the change: the counts are short enough to compare directly, and the full audit is there when something moved in the wrong direction.
2 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
get_summary
Get a summary of accessibility issues for a webpage
BEFORE YOU INSTALL
What to know first
Tools you get
2 tools when we connected.
Requires
npx on PATH
CONTEXT COST
Light Standing cost
Rated by the size of the 2 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Add the block to your client, or run the command directly.
Server setup
Configuration file
JSON
{
"mcpServers": {
"a11y-mcp": {
"command": "npx",
"args": [
"a11y-mcp"
]
}
}
}npx
TERMINAL
npx a11y-mcp
