Get a summary of all accessible tables with optional row counts and modification timestamps. Includes table comments for semantic hints. Use this before querying to discover available tables.
AI agents call listTables to retrieve information from Oracle Database MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Even though listTables only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
Get a summary of all accessible tables with optional row counts and modification timestamps. Includes table comments for semantic hints. Use this before querying to discover available tables. It is categorised as a Read tool in the Oracle Database MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Oracle Database MCP Server MCP server in PolicyLayer and add a rule for listTables: 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 Oracle Database MCP Server. Nothing to install.
listTables 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 listTables 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 listTables. 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.
listTables is provided by the Oracle Database MCP Server MCP server (tannerpace/mcp-oracle-database). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.