atlas_search_create · MongoDB Atlas MCP Server MCP

WHAT IT DOES

What atlas_search_create does on MongoDB Atlas MCP Server

AI agents use atlas_search_create to create or update resources in MongoDB Atlas MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MongoDB Atlas MCP Server environment.

WHY IT NEEDS A POLICY

Why atlas_search_create needs a policy

This tool creates a new Atlas Search index, which is a reversible write operation. It does not delete or overwrite existing data, execute arbitrary code, or involve financial transactions. Indexes can be dropped later, so this is not irreversible. Severity is medium because creating indexes can impact cluster performance and resource usage.

From the tool's definition Create a new Atlas Search index

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

atlas_search_create Rate-limited

atlas_search_create 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "atlas_search_create": {
      "limits": [
        {
          "counter": "atlas_search_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MongoDB Atlas MCP Server, so you can run agents against it safely.

FAQ

Questions about atlas_search_create

What does the atlas_search_create tool do? +

Create a new Atlas Search index. It is categorised as a Write tool in the MongoDB Atlas 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 atlas_search_create? +

Register the MongoDB Atlas MCP Server MCP server in PolicyLayer and add a rule for atlas_search_create: 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 MongoDB Atlas MCP Server. Nothing to install.

What risk level is atlas_search_create? +

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

Can I rate-limit atlas_search_create? +

Yes. Add a rate_limit block to the atlas_search_create 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 atlas_search_create completely? +

Set action: deny in the PolicyLayer policy for atlas_search_create. 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 atlas_search_create? +

atlas_search_create is provided by the MongoDB Atlas MCP Server MCP server (montumodi/mongodb-atlas-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.