Describe the columns, data types and constraints of a table.
AI agents call describe_table to retrieve information from Oracle Sqlplus without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs schema introspection—retrieving table structure information (columns, data types, constraints). It has no side effects and matches the 'Read' category pattern of retrieval operations. The blast radius is minimal since it only exposes schema metadata that is typically non-sensitive or already discoverable through other means.
From the tool's definition Tool name 'describe_table' and description 'Describe the columns, data types and constraints of a table' indicate a query operation that retrieves metadata without modifying data.
Attacks that exploit this kind of access
Describe the columns, data types and constraints of a table. It is categorised as a Read tool in the Oracle Sqlplus MCP Server, which means it retrieves data without modifying state.
Register the Oracle Sqlplus MCP server in PolicyLayer and add a rule for describe_table: 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 Sqlplus. Nothing to install.
describe_table 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 describe_table 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 describe_table. 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.
describe_table is provided by the Oracle Sqlplus MCP server (sagar1012/oracle-sqlplus-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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