List all WorkBoard users (requires Data-Admin role).
AI agents call workboard_list_users_tool to retrieve information from MCP Workboard without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves user information without creating, modifying, or deleting data. It is a read operation. Severity is medium rather than low because listing all users could expose personally identifiable information or organizational structure to an unauthorized agent if role-based access controls are bypassed, which could enable social engineering or targeted attacks.
From the tool's definition Tool name contains 'list_users' and description states 'List all WorkBoard users' — both indicate data retrieval with no modification. The requirement for 'Data-Admin role' suggests access control but does not change the read-only nature of the operation.
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
List all WorkBoard users (requires Data-Admin role). It is categorised as a Read tool in the MCP Workboard MCP Server, which means it retrieves data without modifying state.
Register the MCP Workboard MCP server in PolicyLayer and add a rule for workboard_list_users_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 Workboard. Nothing to install.
workboard_list_users_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 workboard_list_users_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 workboard_list_users_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.
workboard_list_users_tool is provided by the MCP Workboard MCP server (mcp-workboard-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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