stream_group_set_id

THE RISK

Medium Risk

Why stream_group_set_id needs a policy

This tool modifies consumer group metadata (the last delivered ID offset), which affects message consumption behavior. It is a write operation that can cause a consumer group to skip or replay messages, potentially affecting downstream systems. While reversible (the offset can be reset again), the blast radius is substantial if an AI agent sets an incorrect ID, causing message loss or reprocessing.

From the tool's definition Tool name and description indicate modifying state: 'Set consumer group's last delivered ID' implies writing/updating offset or position data in a message queue or stream system.

Documented attack patterns abuse exactly the kind of access stream_group_set_id gives an agent:

POLICY

How to control stream_group_set_id

PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon Translate MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stream_group_set_id:

policy.json

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

stream_group_set_id 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 Amazon Translate 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

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Go deeper

Govern customer-ops agents → PII redaction, approval on external messages, and no-bulk-delete rules on the records agents change.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about stream_group_set_id

What does the stream_group_set_id tool do? +

Set consumer group's last delivered ID. It is categorised as a Write tool in the Amazon Translate 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_set_id? +

Register the Amazon Translate MCP Server MCP server in PolicyLayer and add a rule for stream_group_set_id: 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 Amazon Translate MCP Server. Nothing to install.

What risk level is stream_group_set_id? +

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

Can I rate-limit stream_group_set_id? +

Yes. Add a rate_limit block to the stream_group_set_id 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_set_id completely? +

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

stream_group_set_id is provided by the Amazon Translate MCP Server MCP server (awslabs.amazon-translate-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon Translate MCP Server tool call.

Start from Amazon Translate 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 →