Returns list of tables in the DB
AI agents call get_all_tables 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 performs a read-only operation on database metadata, returning schema information (table names) without side effects. It does not execute arbitrary queries, modify data, or perform destructive operations. The sibling tools (get_table_columns, get_table_foreign_key, get_table_primary_key) reinforce this as a metadata inspection API.
From the tool's definition Tool name 'get_all_tables' and description 'Returns list of tables in the DB' indicate a query operation that retrieves metadata without modifying data.
Attacks that exploit this kind of access
Returns list of tables in the DB. 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_all_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 PostgreSQL MCP Server. Nothing to install.
get_all_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 get_all_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 get_all_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.
get_all_tables is provided by the PostgreSQL MCP Server MCP server (physci/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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