crm_list_segments
List saved contact segments. A segment is a named CRM filter — used as the audience for outreach campaigns and other targeting workflows. Returns each segment with its filter definition.
This record as markdown: /tools/com-getmunin-munin/crm-list-segments.md
What crm_list_segments does on Munin
AI agents call crm_list_segments to retrieve information from Munin without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why crm_list_segments is rated Low
This tool retrieves segment definitions and metadata from the CRM system for viewing/querying purposes. It has no side effects: it does not create, modify, delete, or execute actions. The blast radius is minimal—an AI agent misuse would at worst expose segment definitions that the user already has access to. No data is modified, destroyed, or financial obligations incurred.
From the tool's definition Tool name includes 'list' and description states 'List saved contact segments' with 'Returns each segment' — classic read/query pattern with no modification or deletion.
Attacks that exploit this kind of access
The rule that runs crm_list_segments safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Munin, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crm_list_segments, this is the rule to start with:
crm_list_segments 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 Munin, apply this rule, and every crm_list_segments call is checked against it from then on.
Questions about crm_list_segments
List saved contact segments. A segment is a named CRM filter — used as the audience for outreach campaigns and other targeting workflows. Returns each segment with its filter definition. It is categorised as a Read tool in the Munin MCP Server, which means it retrieves data without modifying state.
Register the Munin MCP server in PolicyLayer and add a rule for crm_list_segments: 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 Munin. Nothing to install.
crm_list_segments 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 crm_list_segments 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 crm_list_segments. 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.
crm_list_segments is provided by the Munin MCP server (https://mcp.getmunin.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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