list_groups_tool
AI agents call list_groups_tool to retrieve information from MCP Gitlab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
List operations retrieve data without modification or side effects. Even though the description is empty, the tool name and context (MCP GitLab server with other action-oriented tools) strongly indicate this reads group information. The blast radius of misuse is minimal—an agent could learn about groups but cannot alter, delete, or execute operations through this tool alone.
From the tool's definition Tool name 'list_groups_tool' indicates a listing/retrieval operation. The lack of description and naming pattern consistent with sibling tools (create_*, cancel_*) that perform actions suggests this performs a query-only operation on GitLab groups.
Attacks that exploit this kind of access
list_groups_tool. It is categorised as a Read tool in the MCP Gitlab MCP Server, which means it retrieves data without modifying state.
Register the MCP Gitlab MCP server in PolicyLayer and add a rule for list_groups_tool: 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 MCP Gitlab. Nothing to install.
list_groups_tool 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_tool 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_tool. 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_tool is provided by the MCP Gitlab MCP server (mcp-gitlab-crunchtools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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