accessibility_scan

Scan the page for accessibility violations using axe-core. Returns WCAG violations with remediation guidance. Optionally generates an HTML report.

Server MCP Playwright Server j0hanz/playwright-mcp
Category Read
Risk class Low
Parameters 00 required

What accessibility_scan does on MCP Playwright Server

AI agents call accessibility_scan to retrieve information from MCP Playwright Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why accessibility_scan needs a policy

This tool reads and analyzes the current page state using axe-core to detect accessibility issues. It only retrieves data (violations and guidance) and optionally generates a report. It does not modify browser state, execute arbitrary code, or cause side effects beyond reading the DOM.

From the tool's definition Scan the page for accessibility violations... Returns WCAG violations with remediation guidance

Questions about accessibility_scan

What does the accessibility_scan tool do? +

Scan the page for accessibility violations using axe-core. Returns WCAG violations with remediation guidance. Optionally generates an HTML report. It is categorised as a Read tool in the MCP Playwright Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on accessibility_scan? +

Register the MCP Playwright Server MCP server in PolicyLayer and add a rule for accessibility_scan: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP Playwright Server. Nothing to install.

What risk level is accessibility_scan? +

accessibility_scan is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit accessibility_scan? +

Yes. Add a rate_limit block to the accessibility_scan rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block accessibility_scan completely? +

Set action: deny in the PolicyLayer policy for accessibility_scan. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides accessibility_scan? +

accessibility_scan is provided by the MCP Playwright Server MCP server (j0hanz/playwright-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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