detect_pii
AI agents call detect_pii to retrieve information from Mcp Pii Guard Au without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The detect_pii tool retrieves and classifies PII entities within documents or text but does not modify, delete, or execute external operations. This is a Read operation. Severity is medium because misuse could expose sensitive information patterns or be used to map PII locations, though the tool itself only identifies rather than exfiltrates data.
From the tool's definition Tool name 'detect_pii' and server purpose 'PII detection and sanitisation' indicate the tool analyzes and identifies personally identifiable information without modifying or deleting data.
Attacks that exploit this kind of access
detect_pii. It is categorised as a Read tool in the Mcp Pii Guard Au MCP Server, which means it retrieves data without modifying state.
Register the Mcp Pii Guard Au MCP server in PolicyLayer and add a rule for detect_pii: 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 Pii Guard Au. Nothing to install.
detect_pii 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 detect_pii 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 detect_pii. 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.
detect_pii is provided by the Mcp Pii Guard Au MCP server (mattwagstaff/mcp-pii-guard-au). 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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