获取表的数据样本
AI agents call getSampleData to retrieve information from SQL 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 sample rows from a table for exploration purposes. It performs a SELECT query with implicit LIMIT constraints to prevent excessive data exposure. As a read-only operation with no side effects, it falls squarely into the Read category. Severity is low because sample data retrieval has minimal blast radius—it cannot modify state, execute code, or cause financial harm.
From the tool's definition Tool name 'getSampleData' and description 'retrieve table data samples' indicate data retrieval without modification. Server explicitly documented as 'read-only interaction with SQL databases' and supports 'sample data retrieval'.
Attacks that exploit this kind of access
获取表的数据样本. It is categorised as a Read tool in the SQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SQL MCP Server MCP server in PolicyLayer and add a rule for getSampleData: 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 SQL MCP Server. Nothing to install.
getSampleData 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 getSampleData 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 getSampleData. 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.
getSampleData is provided by the SQL MCP Server MCP server (polarisxb/sql-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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