AI agents call get_users to retrieve information from Mcp Sling without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a list of users and their information without creating, modifying, deleting, executing code, or moving money. It is a straightforward read operation typical of workforce management platforms. Severity is low because user roster information is generally non-sensitive in the context of an employee's own organization, and retrieval alone poses minimal risk.
From the tool's definition Tool name is'get_users' and description states 'Get list of users in the organization. Returns user information based on your access level' — purely retrieves/queries user data with no modification or side effects.
Attacks that exploit this kind of access
Get list of users in the organization. Returns user information based on your access level. It is categorised as a Read tool in the Mcp Sling MCP Server, which means it retrieves data without modifying state.
Register the Mcp Sling MCP server in PolicyLayer and add a rule for get_users: 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 Sling. Nothing to install.
get_users 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 get_users 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 get_users. 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.
get_users is provided by the Mcp Sling MCP server (poncheck/mcp-sling). 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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