AI agents call get_mail to retrieve information from PTT MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name 'get_mail' clearly indicates data retrieval from a mailbox with no modification or side effects. The presence of 'del_mail' as a distinct sibling tool confirms that mail deletion is handled separately, so 'get_mail' performs only query/retrieval operations typical of the Read category.
From the tool's definition Tool name 'get_mail' indicates retrieval of mailbox contents; sibling context shows 'del_mail' as a separate destructive operation, implying 'get_mail' is read-only. Description is empty, limiting confidence.
Documented attack patterns abuse exactly the kind of access get_mail gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PTT MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_mail:
{
"version": "1",
"default": "deny",
"tools": {
"get_mail": {}
}
}get_mail is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_mail. It is categorised as a Read tool in the PTT MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PTT MCP Server MCP server in PolicyLayer and add a rule for get_mail: 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 PTT MCP Server. Nothing to install.
get_mail 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 get_mail 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 get_mail. 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.
get_mail is provided by the PTT MCP Server MCP server (pyptt/ptt_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 PTT MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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26 PTT MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.