list_tool_groups
List the tool groups that can be loaded on demand, with how many are parked.
This record as markdown: /tools/sveritg-metis-ph/list-tool-groups.md
What list_tool_groups does on Metis Public Health
AI agents call list_tool_groups to retrieve information from Metis Public Health without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_tool_groups is rated Low
This tool retrieves and displays information about available tool groups and their status. It performs no modifications, deletions, or external operations—it simply queries and returns state information. This is a classic Read operation. Severity is low because the information disclosed is only metadata about the Metis system itself, not sensitive user data or external resources.
From the tool's definition list_tool_groups: List the tool groups that can be loaded on demand, with how many are parked. The verb 'List' and the passive retrieval of metadata about tool groups (counts, names) indicates a pure query operation with no side effects.
Attacks that exploit this kind of access
The rule that runs list_tool_groups safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Metis Public Health, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_tool_groups, this is the rule to start with:
list_tool_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 Metis Public Health, apply this rule, and every list_tool_groups call is checked against it from then on.
Questions about list_tool_groups
List the tool groups that can be loaded on demand, with how many are parked. It is categorised as a Read tool in the Metis Public Health MCP Server, which means it retrieves data without modifying state.
Register the Metis Public Health MCP server in PolicyLayer and add a rule for list_tool_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 Metis Public Health. Nothing to install.
list_tool_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_tool_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_tool_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_tool_groups is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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