Execute READ-ONLY SQL query on PostgreSQL database using Java connector (SELECT queries ONLY - strict security enforced)
AI agents call execute_postgresql_query to retrieve information from MCP Document Converter without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool claims to enforce read-only SELECT queries only, placing it in the Read category. However, severity is medium because SQL query execution against a database always carries some risk: even SELECT queries can expose sensitive data, and the actual enforcement of read-only restrictions depends on implementation.
From the tool's definition Execute READ-ONLY SQL query on PostgreSQL database using Java connector (SELECT queries ONLY - strict security enforced)
Attacks that exploit this kind of access
Execute READ-ONLY SQL query on PostgreSQL database using Java connector (SELECT queries ONLY - strict security enforced). It is categorised as a Read tool in the MCP Document Converter MCP Server, which means it retrieves data without modifying state.
Register the MCP Document Converter MCP server in PolicyLayer and add a rule for execute_postgresql_query: 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 MCP Document Converter. Nothing to install.
execute_postgresql_query 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 execute_postgresql_query 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 execute_postgresql_query. 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.
execute_postgresql_query is provided by the MCP Document Converter MCP server (kittolau/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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