Get all users from the mock database
AI agents call get_users to retrieve information from MCP Test 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 side effects. It matches the 'Read' category definition (retrieves or queries data; no side effects). Severity is low because bulk user retrieval has minimal blast radius unless the database contains highly sensitive PII, but the 'mock database' label suggests test/non-production data.
From the tool's definition Tool name is 'get_users' and description states 'Get all users from the mock database' — a retrieval operation with no modification or deletion.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Get all users from the mock database. It is categorised as a Read tool in the MCP Test Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Test Server 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 Test Server. 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 Test Server MCP server (yvanfreitas/mcp-test). 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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