List all tables in the PostgreSQL database
AI agents call list_postgresql_tables 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.
This tool performs a read-only operation to enumerate database schema objects. It has no side effects, does not execute queries, and does not modify or delete data. The severity is low because listing tables is informational metadata retrieval with minimal blast radius if misused by an agent—it reveals database structure but does not access sensitive row data or allow further operations without other tools.
From the tool's definition Tool name 'list_postgresql_tables' and description 'List all tables in the PostgreSQL database' indicate a query operation that retrieves metadata about database structure without modifying, executing, or deleting data.
Attacks that exploit this kind of access
List all tables in the PostgreSQL database. 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 list_postgresql_tables: 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.
list_postgresql_tables 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 list_postgresql_tables 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 list_postgresql_tables. 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.
list_postgresql_tables 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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