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.
The tool retrieves table schema information. It performs no modifications, deletions, or execution of commands. While Firebird is a database server, this particular tool is purely informational and returns schema details, consistent with standard database introspection operations like DESCRIBE in SQL. The sibling context confirms a multi-capability server, but this tool itself only reads structural data.
From the tool's definition Tool 'describe-table' explicitly 'Gets the detailed schema (columns, types, etc.) of a specific table' — a read-only operation that retrieves structural metadata without modifying or executing anything.
Documented attack patterns abuse exactly the kind of access describe-table gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Firebird, and nothing reaches the server without passing your rules. This is the rule we recommend for describe-table:
{
"version": "1",
"default": "deny",
"tools": {
"describe-table": {}
}
}describe-table is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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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 (purodelphi/mcpfirebird). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 MCP Firebird tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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22 MCP Firebird tools catalogued and risk-classified — across an index of 42,500+ MCP servers.