This record as markdown: /tools/heznpc-airmcp/list-groups.md
What list_groups does on AirMCP
AI agents call list_groups to retrieve information from AirMCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_groups is rated Low
This tool performs a read-only operation to retrieve and display contact groups from the user's address book. It has no capacity to modify, delete, or execute actions—only to list existing data. The blast radius is minimal since querying contact groups poses no risk of data loss, financial impact, or unauthorized execution.
From the tool's definition Tool name 'list_groups' and description 'List all contact groups' indicate a query operation that retrieves contact group information without modification or side effects.
Attacks that exploit this kind of access
The rule that runs list_groups safely
PolicyLayer is an MCP gateway: it sits between your AI agents and AirMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_groups, this is the rule to start with:
list_groups 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 AirMCP, apply this rule, and every list_groups call is checked against it from then on.
Questions about list_groups
List all contact groups. It is categorised as a Read tool in the AirMCP MCP Server, which means it retrieves data without modifying state.
Register the Air MCP server in PolicyLayer and add a rule for list_groups: 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 AirMCP. Nothing to install.
list_groups 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_groups 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_groups. 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_groups is provided by the Air MCP server (airmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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