AI agents call mysql_connection_info to retrieve information from Mysql without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves static connection information about the MySQL session—no data queries, no modifications, no operations beyond inspection. It is a pure read operation with minimal blast radius. Even if misused, an AI agent obtaining this information poses negligible security risk compared to actual data retrieval or execution.
From the tool's definition Tool returns connection metadata ('current database, user, effective user, and server version') without retrieving application data or executing queries. The server is explicitly 'read-only' with 'SQL safety validation.'
Attacks that exploit this kind of access
Return current database, user, effective user, and server version. It is categorised as a Read tool in the Mysql MCP Server, which means it retrieves data without modifying state.
Register the Mysql MCP server in PolicyLayer and add a rule for mysql_connection_info: 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 Mysql. Nothing to install.
mysql_connection_info 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 mysql_connection_info 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 mysql_connection_info. 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.
mysql_connection_info is provided by the Mysql MCP server (xujcbiz/mysql-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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