Drop an index from a MongoDB collection (requires FULL mode)
AI agents call mongodb_drop_index to permanently remove resources in Multi-Database MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool irreversibly deletes a database index, which cannot be automatically restored and will impact query performance until manually recreated. While not as severe as dropping data itself, index deletion is a destructive operation that cannot be undone by the tool and requires administrative intervention to recover. The requirement for FULL mode suggests awareness of its destructive nature.
From the tool's definition Drop an index from a MongoDB collection — the verb 'drop' combined with irreversible removal of a database index structure
Attacks that exploit this kind of access
Drop an index from a MongoDB collection (requires FULL mode). It is categorised as a Destructive tool in the Multi-Database MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Multi-Database MCP Server MCP server in PolicyLayer and add a rule for mongodb_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 Multi-Database MCP Server. Nothing to install.
mongodb_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 mongodb_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 mongodb_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.
mongodb_drop_index is provided by the Multi-Database MCP Server MCP server (nam088/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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