Gets the detailed schema (columns, types, etc.) of a specific table.
AI agents call describe-table to retrieve information from MCP Firebird 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—querying database metadata to return table structure information. It retrieves information without modifying, deleting, or executing operations. The blast radius of misuse is minimal; exposing table schema is a standard read operation. While it could inform an attacker about database structure, the tool itself causes no damage.
From the tool's definition Tool description states 'Gets the detailed schema (columns, types, etc.) of a specific table.' The verb 'Gets' and the focus on schema inspection (read-only metadata retrieval) indicate this is a data retrieval operation with no side effects.
Attacks that exploit this kind of access
Gets the detailed schema (columns, types, etc.) of a specific table. It is categorised as a Read tool in the MCP Firebird MCP Server, which means it retrieves data without modifying state.
Register the MCP Firebird 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 Firebird. 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 Firebird MCP server (luancamara/mcpfirebird). 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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