milvus-create-index

THE RISK

Medium Risk

Why milvus-create-index needs a policy

Creating an index modifies database metadata and structure, which is a reversible write operation. While it affects query performance and storage, the action can be undone by dropping the index. This is less severe than destructive operations (which cannot be undone) but more impactful than simple reads.

From the tool's definition Tool name is 'milvus-create-index' and description states 'Create an index on a vector field' — the verb 'Create' indicates a data structure modification operation.

Documented attack patterns abuse exactly the kind of access milvus-create-index gives an agent:

POLICY

How to control milvus-create-index

PolicyLayer is an MCP gateway — it sits between your AI agents and Milvus MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for milvus-create-index:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "milvus-create-index": {
      "limits": [
        {
          "counter": "milvus-create-index_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

milvus-create-index stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Milvus MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Milvus MCP Server tools

Destructive milvus-delete-entities Delete entities from a collection based on filter expression Execute milvus-load-collection Load a collection into memory for search and query Execute milvus-release-collection Release a collection from memory Write milvus-bulk-insert Insert data in batches for better performance Write milvus-create-collection Create a new collection with specified schema Write milvus-create-dynamic-field Add a dynamic field to an existing collection Write milvus-insert-data Insert data into a collection Write milvus-upsert-data Upsert data into a collection (insert or update if exists)

All 21 Milvus MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about milvus-create-index

What does the milvus-create-index tool do? +

Create an index on a vector field. It is categorised as a Write tool in the Milvus MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on milvus-create-index? +

Register the Milvus MCP Server MCP server in PolicyLayer and add a rule for milvus-create-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 Milvus MCP Server. Nothing to install.

What risk level is milvus-create-index? +

milvus-create-index is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit milvus-create-index? +

Yes. Add a rate_limit block to the milvus-create-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 milvus-create-index completely? +

Set action: deny in the PolicyLayer policy for milvus-create-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 milvus-create-index? +

milvus-create-index is provided by the Milvus MCP Server MCP server (stephen37/mcp-server-milvus). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Milvus MCP Server tool call.

Start from Milvus MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →