获取指定表的结构信息
AI agents call get_schema to retrieve information from MySQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Schema inspection is a non-destructive query operation with no side effects. It only retrieves structural metadata about database tables, making it a Read category tool. The low severity reflects minimal blast radius—an AI agent misusing this tool would at worst gain unnecessary visibility into database structure, which poses minimal risk compared to write, execute, or destructive operations.
From the tool's definition Tool name is 'get_schema' and description translates to 'Get the structure information of a specified table.' This is a read-only operation that retrieves metadata about table schemas without modifying, executing code, deleting, or affecting financial data.
Attacks that exploit this kind of access
获取指定表的结构信息. It is categorised as a Read tool in the MySQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MySQL MCP Server MCP server in PolicyLayer and add a rule for get_schema: 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 MCP Server. Nothing to install.
get_schema 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_schema 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_schema. 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_schema is provided by the MySQL MCP Server MCP server (qipantanyi/mysql-mcp). 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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