Drop a function
AI agents call db_drop_function to permanently remove resources in Database MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool performs an irreversible deletion of a database function object. While not as broad as dropping an entire table, deleting a function removes code that may be relied upon by applications, stored procedures, or triggers. The operation cannot be undone in normal operation (only via transaction rollback or restore). This falls squarely under the Destructive category per the classification rules.
From the tool's definition Tool name is 'db_drop_function' with description 'Drop a function'. The verb 'drop' is a DDL operation that irreversibly deletes database objects. This is a destructive operation that cannot be undone without restoration from backups.
Attacks that exploit this kind of access
Drop a function. It is categorised as a Destructive tool in the Database MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Database MCP Server MCP server in PolicyLayer and add a rule for db_drop_function: 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 Database MCP Server. Nothing to install.
db_drop_function is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the db_drop_function 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 db_drop_function. 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.
db_drop_function is provided by the Database MCP Server MCP server (roilanrodriguez55/database-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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