执行MySQL数据库查询
AI agents call query_database to retrieve information from Database Query MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool is designed for read-only database queries. The server architecture explicitly prevents data modification and destructive operations. While the tool executes queries, it cannot modify, delete, or create data—it only retrieves information. The low severity reflects minimal blast radius: misuse would leak data rather than cause irreversible harm.
From the tool's definition Tool name 'query_database' with description stating 'Execute MySQL database query' combined with server description 'read-only querying' and 'blocks any data modification operations for safety.' The server explicitly restricts to SELECT-like operations.
Attacks that exploit this kind of access
执行MySQL数据库查询. It is categorised as a Read tool in the Database Query MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Database Query MCP Server MCP server in PolicyLayer and add a rule for query_database: 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 Database Query MCP Server. Nothing to install.
query_database 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 query_database 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 query_database. 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.
query_database is provided by the Database Query MCP Server MCP server (xuejike/coding-db-mcp). 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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