Describe la estructura de una tabla
AI agents call describe_table 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 schema metadata about a table without modifying, executing code, or deleting data. It is a passive read operation that queries database metadata. The server's explicit commitment to 'read-only access' confirms this classification. Low severity due to limited blast radius—exposing schema information poses minimal risk compared to data modification or destructive operations.
From the tool's definition Tool name 'describe_table' and description 'Describe la estructura de una tabla' (Describe the structure of a table); server description explicitly states 'secure, read-only access' and lists 'describing table structures' as a core function.
Attacks that exploit this kind of access
Describe la estructura de una tabla. 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 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 MCP Oracle Server. 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 MCP Oracle Server MCP server (yrsonhtm/mcp-oracle-server). 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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