获取表的详细结构信息，包括列定义、索引、建表语句
AI agents call describe_table 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.
This tool performs a read-only query operation that retrieves schema metadata about a table. It has no side effects—it only inspects and returns information about table structure, columns, indexes, and creation statements. It cannot modify, delete, or execute code, making it a classic 'Read' category tool with minimal security risk.
From the tool's definition Tool name 'describe_table' and description indicate it retrieves structural metadata: '获取表的详细结构信息，包括列定义、索引、建表语句' (Get detailed structural information of a table, including column definitions, indexes, and CREATE TABLE statements).
Attacks that exploit this kind of access
获取表的详细结构信息，包括列定义、索引、建表语句. 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 describe_table: 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.
describe_table 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 describe_table 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 describe_table. 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.
describe_table is provided by the MySQL MCP Server MCP server (lm203688/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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