get_user_id
A read tool on the Agent Jail MCP server.
This record as markdown: /tools/agent-jail-mcp/get-user-id.md
What get_user_id does on Agent Jail
AI agents call get_user_id to retrieve information from Agent Jail without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why get_user_id is rated Low
Based on the tool name alone, this appears to be a Read operation that retrieves a user identifier. The absence of destructive language (delete, drop, remove) and the 'get_' prefix indicate a non-destructive data retrieval. Confidence is moderate (0.7) due to lack of a description; if the tool performs authentication checks or has side effects, severity could shift.
From the tool's definition Tool name 'get_user_id' suggests a retrieval operation that fetches an identifier. No description provided, but the naming convention is consistent with query/fetch operations that retrieve data without side effects.
Attacks that exploit this kind of access
The rule that runs get_user_id safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Agent Jail, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_user_id, this is the rule to start with:
get_user_id is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Agent Jail, apply this rule, and every get_user_id call is checked against it from then on.
Questions about get_user_id
get_user_id is a read tool on the Agent Jail MCP server. It is categorised as a Read tool in the Agent Jail MCP Server, which means it retrieves data without modifying state.
Register the Agent Jail MCP server in PolicyLayer and add a rule for get_user_id: 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 Agent Jail. Nothing to install.
get_user_id 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_user_id 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_user_id. 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_user_id is provided by the Agent Jail MCP server (idiscoord13-sketch/agent-jail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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