Placeholder tool for future POP3-based Mailplug ingestion.
AI agents call mailplug_list_recent to retrieve information from Mailplug Jandi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool is classified as Read because it is designed to list/retrieve recent emails from a mailbox without modifying, deleting, or executing code. POP3 ingestion is fundamentally a data retrieval operation. The severity is low because merely listing emails poses minimal risk; the blast radius is limited to information disclosure.
From the tool's definition Tool name 'mailplug_list_recent' combined with description indicating it is a 'Placeholder tool for future POP3-based Mailplug ingestion' suggests retrieval of recent email data. POP3 is a mail protocol for reading/receiving messages.
Attacks that exploit this kind of access
Placeholder tool for future POP3-based Mailplug ingestion. It is categorised as a Read tool in the Mailplug Jandi MCP Server, which means it retrieves data without modifying state.
Register the Mailplug Jandi MCP server in PolicyLayer and add a rule for mailplug_list_recent: 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 Mailplug Jandi. Nothing to install.
mailplug_list_recent 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 mailplug_list_recent 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 mailplug_list_recent. 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.
mailplug_list_recent is provided by the Mailplug Jandi MCP server (nimbuswsj/mailplug-jandi-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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