stream_group_create · AWS IoT SiteWise MCP Server MCP

WHAT IT DOES

What stream_group_create does on AWS IoT SiteWise MCP Server

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

WHY IT NEEDS A POLICY

Why stream_group_create needs a policy

This tool creates a new consumer group, which is a reversible write operation. The blast radius is medium because creating groups could enable unauthorized access patterns or resource organization, but the action itself is not destructive (the group can be deleted) and does not directly access sensitive data or execute arbitrary operations. No financial implications or code execution involved.

From the tool's definition Tool description states 'Create consumer group' - a creation operation that modifies system state by establishing a new resource grouping in AWS IoT SiteWise.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

stream_group_create Rate-limited

stream_group_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": {
    "stream_group_create": {
      "limits": [
        {
          "counter": "stream_group_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 AWS IoT SiteWise MCP Server, so you can run agents against it safely.

FAQ

Questions about stream_group_create

What does the stream_group_create tool do? +

Create consumer group. It is categorised as a Write tool in the AWS IoT SiteWise 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 stream_group_create? +

Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for stream_group_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 AWS IoT SiteWise MCP Server. Nothing to install.

What risk level is stream_group_create? +

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

Can I rate-limit stream_group_create? +

Yes. Add a rate_limit block to the stream_group_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 stream_group_create completely? +

Set action: deny in the PolicyLayer policy for stream_group_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 stream_group_create? +

stream_group_create is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.