Check if currently authenticated with Willys
AI agents call mcp__willys_check_auth to retrieve information from Willys 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 the current authentication status. It performs no mutations, does not execute code, does not delete data, and does not involve financial transactions. It is purely informational and has minimal security impact—knowing authentication status is a read-only operation. Severity is low because misuse by an AI agent (e.g., checking auth status repeatedly) poses negligible risk.
From the tool's definition Tool name 'check_auth' and description 'Check if currently authenticated with Willys' indicate a status query operation that retrieves authentication state without modifying data or triggering side effects.
Attacks that exploit this kind of access
Check if currently authenticated with Willys. It is categorised as a Read tool in the Willys MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Willys MCP Server MCP server in PolicyLayer and add a rule for mcp__willys_check_auth: 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 Willys MCP Server. Nothing to install.
mcp__willys_check_auth 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 mcp__willys_check_auth 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 mcp__willys_check_auth. 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.
mcp__willys_check_auth is provided by the Willys MCP Server MCP server (jimmystridh/willys-mcp). 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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