list_contact_group_members
List the contacts that belong to a contact group, with pagination.
This record as markdown: /tools/trekmail-mcp-server/list-contact-group-members.md
What list_contact_group_members does on TrekMail MCP Server
AI agents call list_contact_group_members 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.
Why list_contact_group_members is rated Low
This tool retrieves and queries contact group membership data without creating, modifying, deleting, or executing any operations. It has minimal blast radius if misused by an AI agent—at worst, it could enumerate contacts within groups, which is a low-severity information disclosure rather than operational impact.
From the tool's definition Tool name is 'list_contact_group_members' and description states 'List the contacts that belong to a contact group, with pagination.' The verb 'list' and the retrieval-oriented description indicate a read-only operation with no side effects.
Attacks that exploit this kind of access
The rule that runs list_contact_group_members 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 list_contact_group_members, this is the rule to start with:
list_contact_group_members is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect TrekMail MCP Server, apply this rule, and every list_contact_group_members call is checked against it from then on.
Questions about list_contact_group_members
List the contacts that belong to a contact group, with pagination. It is categorised as a Read tool in the TrekMail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for list_contact_group_members: 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.
list_contact_group_members 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 list_contact_group_members 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 list_contact_group_members. 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.
list_contact_group_members 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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