get_mail_rule

Get a single mail filter by ID.

SERVERTrekMail MCP Server SOURCEtrekmail/mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/trekmail-mcp-server/get-mail-rule.md

WHAT IT DOES

What get_mail_rule does on TrekMail MCP Server

AI agents call get_mail_rule to retrieve information from TrekMail MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_mail_rule is rated Low

This tool retrieves or queries a single mail filter rule by its identifier. It performs a read-only operation with no capability to modify, delete, or execute actions. The 'get' verb and retrieve-focused description are consistent with the Read category. Severity is low because retrieving mail filter configuration data poses minimal risk even if misused by an agent.

From the tool's definition Tool name is 'get_mail_rule' and description states 'Get a single mail filter by ID' — both indicate a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_mail_rule safely

PolicyLayer is an MCP gateway: it sits between your AI agents and TrekMail MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_mail_rule, this is the rule to start with:

get_mail_rule Allowed

get_mail_rule is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_mail_rule": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect TrekMail MCP Server, apply this rule, and every get_mail_rule call is checked against it from then on.

FAQ

Questions about get_mail_rule

What does the get_mail_rule tool do? +

Get a single mail filter by ID. It is categorised as a Read tool in the TrekMail MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_mail_rule? +

Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for get_mail_rule: 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 TrekMail MCP Server. Nothing to install.

What risk level is get_mail_rule? +

get_mail_rule is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_mail_rule? +

Yes. Add a rate_limit block to the get_mail_rule 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.

How do I block get_mail_rule completely? +

Set action: deny in the PolicyLayer policy for get_mail_rule. 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.

What MCP server provides get_mail_rule? +

get_mail_rule is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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