List WCAG 2.2 success criteria, optionally filtered by conformance level (A, AA, AAA) or principle (Perceivable, Operable, Understandable, Robust). Use this to look up specific WCAG requirements without relying on training data.
AI agents call list_wcag_criteria to retrieve information from aria51 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns WCAG conformance standards and principles. It retrieves information without modifying, executing, deleting, or causing external side effects. The optional filtering parameters (conformance level, principle) are used only to narrow the read query, not to alter any state. Misuse by an AI agent would be limited to retrieving incorrect criteria for a given context, which poses minimal risk.
From the tool's definition Tool name is 'list_wcag_criteria' and description states it 'List[s] WCAG 2.2 success criteria' with optional filtering. No side effects mentioned; purely retrieval/lookup of reference data.
Attacks that exploit this kind of access
List WCAG 2.2 success criteria, optionally filtered by conformance level (A, AA, AAA) or principle (Perceivable, Operable, Understandable, Robust). Use this to look up specific WCAG requirements without relying on training data. It is categorised as a Read tool in the aria51 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the aria51 MCP Server MCP server in PolicyLayer and add a rule for list_wcag_criteria: 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 aria51 MCP Server. Nothing to install.
list_wcag_criteria is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_wcag_criteria 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.
Set action: deny in the PolicyLayer policy for list_wcag_criteria. 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.
list_wcag_criteria is provided by the aria51 MCP Server MCP server (justinleeirizarry/aria51). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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