Check database connection health and get server status
AI agents call health_check to retrieve information from MCP Server MySQL without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and reports the health/status of a database connection and server. It has no side effects—it neither modifies data (Write), executes arbitrary code (Execute), deletes anything (Destructive), nor affects finances (Financial). The blast radius of misuse is minimal: an agent could retrieve operational status information, which poses negligible risk.
From the tool's definition Tool name 'health_check' and description 'Check database connection health and get server status' indicate a read-only diagnostic operation that retrieves status information without modifying, executing arbitrary operations, or deleting data.
Attacks that exploit this kind of access
Check database connection health and get server status. It is categorised as a Read tool in the MCP Server MySQL MCP Server, which means it retrieves data without modifying state.
Register the MCP Server MySQL MCP server in PolicyLayer and add a rule for health_check: 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 Server MySQL. Nothing to install.
health_check 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 health_check 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 health_check. 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.
health_check is provided by the MCP Server MySQL MCP server (nilsir/mcp-server-mysql). 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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