获取表结构：列定义、主键、索引。db 省略时自动推断。
AI agents call get_table_schema to retrieve information from Yooztech Mcp Mysql without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries metadata about database tables but does not retrieve data rows, modify data, execute code, or trigger side effects. It is a simple introspective read operation that returns schema information. Severity is low because schema information is typically non-sensitive and the blast radius of misuse is minimal—at worst it exposes table structure which is usually known to authorized database users.
From the tool's definition Tool name 'get_table_schema' retrieves table structure information (columns, primary keys, indexes). Description states '获取表结构' (get table schema/structure). No data modification, deletion, or code execution occurs.
Attacks that exploit this kind of access
获取表结构：列定义、主键、索引。db 省略时自动推断。. It is categorised as a Read tool in the Yooztech Mcp Mysql MCP Server, which means it retrieves data without modifying state.
Register the Yooztech Mcp Mysql MCP server in PolicyLayer and add a rule for get_table_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 Yooztech Mcp Mysql. Nothing to install.
get_table_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_table_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_table_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_table_schema is provided by the Yooztech Mcp Mysql MCP server (yooztech/mcp_mysql). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_table_schema is one line of Yooztech Mcp Mysql's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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