AI agents call hibp_check_account to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
email | string | Yes | |
api_key | string | — |
Parameters from the server's own tool schema.
This tool queries the HIBP (Have I Been Pwned) service to retrieve historical breach status for an email account. It is a read-only operation with no data modification, deletion, or external execution. The severity is low as misuse primarily poses information disclosure risks rather than system compromise or data destruction. No financial impact or destructive actions are possible.
From the tool's definition Tool name 'hibp_check_account' and description 'Check if an email account has been in a data breach' indicate a query operation that retrieves breach information without modifying data or triggering external side effects.
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
Check if an email account has been in a data breach. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
hibp_check_account accepts 2 parameters: email, api_key. Required: email. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for hibp_check_account: 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 UnClick. Nothing to install.
hibp_check_account 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 hibp_check_account 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 hibp_check_account. 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.
hibp_check_account is provided by the UnClick MCP server (@unclick/mcp-server). 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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