Retrieve recent query history with execution metadata
AI agents call get_query_history to retrieve information from PostgreSQL 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 historical records of past queries and their metadata. It performs a lookup/query operation that does not modify, delete, or execute any code. The read-only nature of the server and the retrieval-focused description confirm this is a simple data access pattern. Severity is low because misuse would only expose query logs, not sensitive current data or enable destructive actions.
From the tool's definition Tool name 'get_query_history' and description 'Retrieve recent query history with execution metadata' indicate a retrieval operation with no data modification.
Attacks that exploit this kind of access
Retrieve recent query history with execution metadata. It is categorised as a Read tool in the PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for get_query_history: 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 PostgreSQL MCP Server. Nothing to install.
get_query_history 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 get_query_history 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 get_query_history. 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.
get_query_history is provided by the PostgreSQL MCP Server MCP server (jplwunder/postgres-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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