Describe a table using compact column metadata designed to reduce LLM context usage.
AI agents call describe_table_compact 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 retrieves and presents schema/metadata information about database tables in a compact format. It performs no data modification, deletion, or execution of arbitrary commands. The operation is purely informational with no side effects. The low severity reflects that misuse would only expose schema information, not compromise data integrity or enable destructive operations.
From the tool's definition Tool name 'describe_table_compact' and description 'Describe a table using compact column metadata' indicates a retrieval operation that returns metadata about database table structure without modifying data.
Attacks that exploit this kind of access
Describe a table using compact column metadata designed to reduce LLM context usage. 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_compact: 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_compact 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_compact 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_compact. 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_compact 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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