AI agents call get_db_stats to retrieve information from Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries database statistics (size, connection count, cache hit ratio) with no side effects. It performs a read-only operation that does not create, modify, delete, or execute anything. The severity is low because exposure of this metadata presents minimal risk—it reveals operational information but cannot directly harm data or systems.
From the tool's definition Tool name 'get_db_stats' and description 'Get overall database statistics: size, connection count, cache hit ratio' indicate retrieval of metadata about database state without modification or execution.
Attacks that exploit this kind of access
Get overall database statistics: size, connection count, cache hit ratio,. It is categorised as a Read tool in the Server MCP Server, which means it retrieves data without modifying state.
Register the Server MCP server in PolicyLayer and add a rule for get_db_stats: 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 Server. Nothing to install.
get_db_stats 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_db_stats 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_db_stats. 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_db_stats is provided by the Server MCP server (@nest-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.
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