Low Risk

stream_read_group

stream_read_group

How to control stream_read_group ↓

What stream_read_group does on Amazon Redshift MCP Server

AI agents call stream_read_group to retrieve information from Amazon Redshift MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why stream_read_group needs a policy

The name strongly suggests a read operation on a group resource (consistent with other Read tools like 'ActivateAHOReadSets' on the server). Without a description, confidence is moderate. The lack of destructive keywords ('delete', 'drop', 'remove') and absence of action verbs ('execute', 'run', 'trigger') support Read classification.

From the tool's definition Tool name 'stream_read_group' contains 'read' indicating a retrieval operation; no description provided to suggest write, execute, or destructive capability.

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

How to control stream_read_group

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "stream_read_group": {}
  }
}

stream_read_group is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Amazon Redshift MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about stream_read_group

What does the stream_read_group tool do? +

stream_read_group. It is categorised as a Read tool in the Amazon Redshift MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on stream_read_group? +

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

What risk level is stream_read_group? +

stream_read_group is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit stream_read_group? +

Yes. Add a rate_limit block to the stream_read_group 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_read_group completely? +

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

stream_read_group is provided by the Amazon Redshift MCP Server MCP server (awslabs.redshift-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 Redshift MCP Server tool call.

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

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805 Amazon Redshift MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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