列出数据库中的所有表
AI agents call list_tables 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 retrieves metadata about database tables with no side effects. It is a read-only operation that queries schema information only, placing it squarely in the Read category. The low severity reflects minimal risk: even if misused by an agent, it only exposes table names and structure, not sensitive data rows (unless the table names themselves are highly sensitive).
From the tool's definition Tool name 'list_tables' and server description stating 'read-only access to query data and examine database metadata' and 'database schema exploration'. The tool lists tables without modifying data.
Attacks that exploit this kind of access
列出数据库中的所有表. 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 list_tables: 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.
list_tables 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 list_tables 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 list_tables. 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.
list_tables is provided by the MySQL MCP Server MCP server (jeweis/jewei-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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