redis_rpush · Multi-Database MCP Server MCP: Risk & Policy

WHAT IT DOES

What redis_rpush does on Multi-Database MCP Server

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

WHY IT NEEDS A POLICY

Why redis_rpush needs a policy

RPUSH is a Redis operation that appends values to the tail of a list. This is a write operation that modifies existing data or creates a new list key. It is reversible (values can be removed later), so it falls under Write rather than Destructive. The requirement for FULL mode indicates elevated permissions, but the operation itself is a standard data modification with medium blast radius.

From the tool's definition 'Append one or more values to a list' — creates or modifies data by appending to a Redis list

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

redis_rpush Rate-limited

redis_rpush 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": {
    "redis_rpush": {
      "limits": [
        {
          "counter": "redis_rpush_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 Multi-Database MCP Server, so you can run agents against it safely.

FAQ

Questions about redis_rpush

What does the redis_rpush tool do? +

Append one or more values to a list (requires FULL mode). It is categorised as a Write tool in the Multi-Database 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 redis_rpush? +

Register the Multi-Database MCP Server MCP server in PolicyLayer and add a rule for redis_rpush: 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 Multi-Database MCP Server. Nothing to install.

What risk level is redis_rpush? +

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

Can I rate-limit redis_rpush? +

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

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

redis_rpush is provided by the Multi-Database MCP Server MCP server (nam088/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.