列出所有可用的数据库
AI agents call list_databases 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 operation that enumerates available databases. It has no side effects—it does not create, modify, delete, or execute any databases or operations. It is a passive information retrieval task with minimal blast radius if misused. The sibling tools (describe_table, list_tables, query_database) confirm this is part of a database introspection/query suite.
From the tool's definition Tool name 'list_databases' combined with description '列出所有可用的数据库' (list all available databases) indicates a query operation that retrieves database metadata without modification.
Attacks that exploit this kind of access
列出所有可用的数据库. 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_databases: 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_databases 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_databases 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_databases. 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_databases is provided by the MySQL MCP Server MCP server (shengshengshengbuxi/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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