Retrieve and return a dictionary containing the definition of a table, including column names, data types, nullable, autoincrement, primary key, and foreign keys.
AI agents call describe_table to retrieve information from OpenLink MCP Server for ODBC without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs schema inspection only, returning metadata about table structure without modifying, executing, or deleting any data. It is analogous to SQL DESCRIBE or information_schema queries, which are standard Read operations. The low severity reflects minimal blast radius—misuse would only expose schema information, not data values or system compromise.
From the tool's definition Tool description states it retrieves table definition metadata: 'Retrieve and return a dictionary containing the definition of a table, including column names, data types, nullable, autoincrement, primary key, and foreign keys.' The verb 'Retrieve' and the…
Attacks that exploit this kind of access
Retrieve and return a dictionary containing the definition of a table, including column names, data types, nullable, autoincrement, primary key, and foreign keys. It is categorised as a Read tool in the OpenLink MCP Server for ODBC MCP Server, which means it retrieves data without modifying state.
Register the OpenLink MCP Server for ODBC 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 OpenLink MCP Server for ODBC. 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 OpenLink MCP Server for ODBC MCP server (pvsmark/pvs-odbc-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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