Find 42 users by a case-insensitive login substring (max 5 results)
AI agents call searchUsers to retrieve information from 42 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves user data based on a search parameter but does not create, modify, delete, or execute any actions. It is a straightforward read operation similar to a directory search.
From the tool's definition Tool name 'searchUsers' and description 'Find 42 users by a case-insensitive login substring' indicate a query/search operation that retrieves user information without modifying or deleting data.
Attacks that exploit this kind of access
Find 42 users by a case-insensitive login substring (max 5 results). It is categorised as a Read tool in the 42 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the 42 MCP Server MCP server in PolicyLayer and add a rule for searchUsers: 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 42 MCP Server. Nothing to install.
searchUsers 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 searchUsers 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 searchUsers. 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.
searchUsers is provided by the 42 MCP Server MCP server (smizuoch/42-mcp-server). 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.
Teams ship this data inside their own products. See what a licence covers →