AI agents call poll_email_test to retrieve information from Intodns without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read operation to fetch the latest message from an email-test session. The idempotent nature of the operation and the absence of any language indicating modification, deletion, or execution of external operations confirms this is a data retrieval function with no side effects. Low severity because retrieving test email data poses minimal risk to system integrity or security.
From the tool's definition Tool description states 'Process the latest received message' and 'Idempotent POST', indicating it retrieves/queries the most recent message from an email-test session without modifying, deleting, or executing operations on the underlying system.
Attacks that exploit this kind of access
Process the latest received message in an email-test session. Idempotent POST: if no message has arrived yet, returns. It is categorised as a Read tool in the Intodns MCP Server, which means it retrieves data without modifying state.
Register the Intodns MCP server in PolicyLayer and add a rule for poll_email_test: 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 Intodns. Nothing to install.
poll_email_test 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 poll_email_test 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 poll_email_test. 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.
poll_email_test is provided by the Intodns MCP server (rosconl/intodns-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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