rmq_exchange_create · RedisNexus MCP: Risk & Policy

WHAT IT DOES

What rmq_exchange_create does on RedisNexus

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

WHY IT NEEDS A POLICY

Why rmq_exchange_create needs a policy

This tool creates new message queue exchanges, which is a reversible modification of infrastructure/configuration state. It does not execute arbitrary code, delete data, or move money. The severity is medium because misconfiguration could disrupt message routing in production systems, but the operation itself is reversible (the exchange can be deleted).

From the tool's definition Tool name 'rmq_exchange_create' and description 'Create a new exchange' indicate data creation capability. The description is cut off but clearly describes exchange configuration in a message queue system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rmq_exchange_create Rate-limited

rmq_exchange_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": {
    "rmq_exchange_create": {
      "limits": [
        {
          "counter": "rmq_exchange_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 RedisNexus, so you can run agents against it safely.

FAQ

Questions about rmq_exchange_create

What does the rmq_exchange_create tool do? +

Create a new exchange. Types: direct (exact routing key match), fanout (broadcast),. It is categorised as a Write tool in the RedisNexus MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rmq_exchange_create? +

Register the RedisNexus MCP server in PolicyLayer and add a rule for rmq_exchange_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 RedisNexus. Nothing to install.

What risk level is rmq_exchange_create? +

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

Can I rate-limit rmq_exchange_create? +

Yes. Add a rate_limit block to the rmq_exchange_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 rmq_exchange_create completely? +

Set action: deny in the PolicyLayer policy for rmq_exchange_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 rmq_exchange_create? +

rmq_exchange_create is provided by the RedisNexus MCP server (rajkumar-madhu/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.