Get the schema information for a specific table
AI agents call describe_table to retrieve information from SQLite MCP 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 (column names, types, constraints, etc.) from a database table. It has no side effects, does not modify data, and does not execute arbitrary code. It is a straightforward introspection operation analogous to DESCRIBE or PRAGMA table_info in SQLite, placing it firmly in the Read category with low severity.
From the tool's definition Tool name is 'describe_table' and description states 'Get the schema information for a specific table' — this is a query operation that retrieves metadata about table structure without modifying or executing any data operations.
Attacks that exploit this kind of access
Get the schema information for a specific table. It is categorised as a Read tool in the SQLite MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SQLite MCP 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 SQLite MCP 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 SQLite MCP Server MCP server (u1pns/sqlite-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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