List all tables in the database. Optionally filter by schema name.
AI agents call listTables to retrieve information from MCP Oracle Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves database metadata (table names) without creating, modifying, or deleting any data. It is a safe introspection operation typical of database administration. The blast radius is minimal—an AI agent using this tool can at most discover the database structure, which may expose sensitive schema information but causes no data loss or functional harm.
From the tool's definition Tool name 'listTables' and description 'List all tables in the database' clearly indicate a query/retrieval operation with no modification capability. The optional schema filter parameter is also read-only.
Attacks that exploit this kind of access
List all tables in the database. Optionally filter by schema name. It is categorised as a Read tool in the MCP Oracle Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Oracle 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 MCP Oracle 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 MCP Oracle Server MCP server (jaikishpai/mcp-server-nodejs). 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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