Drop an index from a collection
AI agents call drop-index to permanently remove resources in Mongodb3 — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The 'drop' verb combined with the action of removing an index from a collection represents a destructive operation that cannot be undone without recreating the index. While not as critical as dropping an entire collection or data, index deletion degrades query performance and represents permanent loss of a database optimization structure.
From the tool's definition Tool name 'drop-index' with description 'Drop an index from a collection' explicitly performs an irreversible deletion operation on database indexes.
Attacks that exploit this kind of access
Drop an index from a collection. It is categorised as a Destructive tool in the Mongodb3 MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mongodb3 MCP server in PolicyLayer and add a rule for drop-index: 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 Mongodb3. Nothing to install.
drop-index 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 drop-index 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 drop-index. 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.
drop-index is provided by the Mongodb3 MCP server (mongodb3-mcp-server). 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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