List all users (administrator only)
AI agents call list_users to retrieve information from Tonle OpenProject MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves user data without modifying, deleting, or executing any operations. It is a straightforward read operation that returns information. While the data returned (user list) could be sensitive, the action itself is non-destructive and has no side effects. The restriction to administrator-only access mitigates some risk but does not change the category.
From the tool's definition Tool name is 'list_users' and description states 'List all users (administrator only)'. The verb 'list' is a retrieval operation with no side effects.
Risk signalsBulk/mass operation — affects multiple targets · Admin/system-level operation
Attacks that exploit this kind of access
List all users (administrator only). It is categorised as a Read tool in the Tonle OpenProject MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tonle OpenProject MCP Server MCP server in PolicyLayer and add a rule for list_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 Tonle OpenProject MCP Server. Nothing to install.
list_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 list_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 list_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.
list_users is provided by the Tonle OpenProject MCP Server MCP server (liratanak/openproject-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_users is one line of Tonle OpenProject MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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