List up to limit rows from table
AI agents call pg_list_rows to retrieve information from Database 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 query operation on a PostgreSQL table. It retrieves and displays rows without modifying, deleting, or executing arbitrary code. The bounded result set (via `limit` parameter) further reduces risk. Typical misuse would expose existing data but cannot cause irreversible changes or financial impact.
From the tool's definition Tool name 'pg_list_rows' and description 'List up to `limit` rows from table' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List up to limit rows from table. It is categorised as a Read tool in the Database MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Database MCP Server MCP server in PolicyLayer and add a rule for pg_list_rows: 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 MCP Server. Nothing to install.
pg_list_rows 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 pg_list_rows 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 pg_list_rows. 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.
pg_list_rows is provided by the Database MCP Server MCP server (kunwarmahen/db-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
pg_list_rows is one line of Database MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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