列出数据库中所有表名
AI agents call list_tables to retrieve information from MCP DB 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 (table names) from the database schema without executing code, modifying data, or triggering external operations. It is a pure read operation with minimal blast radius—the worst outcome is information disclosure of table structure, which is typically low-severity in a controlled environment where the AI has legitimate database access.
From the tool's definition Tool name 'list_tables' and description '列出数据库中所有表名' (list all table names in database) indicate a retrieval operation with no data modification or execution capability.
Attacks that exploit this kind of access
列出数据库中所有表名. It is categorised as a Read tool in the MCP DB Server MCP Server, which means it retrieves data without modifying state.
Register the MCP DB 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 MCP DB 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 MCP DB Server MCP server (sharpdogs/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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