mcp_drop_index

A destructive tool on the Mongo- MCP server.

SERVERMongo-MCP SOURCE441126098/mongo-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/441126098-mongo-mcp/mcp-drop-index.md

WHAT IT DOES

What mcp_drop_index does on Mongo-MCP

AI agents call mcp_drop_index to permanently remove resources in Mongo-MCP, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why mcp_drop_index is rated Critical

Dropping an index is an irreversible operation that cannot be undone without explicit recreation. While less severe than dropping a collection or deleting documents, it permanently removes database optimization metadata and cannot be simply reverted. High confidence despite empty description because the verb 'drop' in database context is unambiguous, and the server explicitly manages indexes.

From the tool's definition Tool name 'mcp_drop_index' combined with server context (MongoDB index management) indicates irreversible deletion of an index. The 'drop' verb is characteristic of destructive operations in database contexts.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mcp_drop_index safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mongo-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mcp_drop_index, this is the rule to start with:

mcp_drop_index Hidden

mcp_drop_index is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "mcp_drop_index"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mongo-MCP, apply this rule, and every mcp_drop_index call is checked against it from then on.

FAQ

Questions about mcp_drop_index

What does the mcp_drop_index tool do? +

mcp_drop_index is a destructive tool on the Mongo MCP server. It is categorised as a Destructive tool in the Mongo-MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on mcp_drop_index? +

Register the Mongo MCP server in PolicyLayer and add a rule for mcp_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 Mongo-MCP. Nothing to install.

What risk level is mcp_drop_index? +

mcp_drop_index is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit mcp_drop_index? +

Yes. Add a rate_limit block to the mcp_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.

How do I block mcp_drop_index completely? +

Set action: deny in the PolicyLayer policy for mcp_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.

What MCP server provides mcp_drop_index? +

mcp_drop_index is provided by the Mongo MCP server (441126098/mongo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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