Medium Risk

sorted_set_remove_by_score

Remove members by score range.

How to control sorted_set_remove_by_score ↓

What sorted_set_remove_by_score does on Prometheus MCP Server

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

Medium Risk

Why sorted_set_remove_by_score needs a policy

This tool modifies data by removing members from a sorted set based on score criteria. While it deletes members, the operation is reversible and targeted rather than a permanent destruction of core infrastructure or irreplaceable data.

From the tool's definition Tool name 'sorted_set_remove_by_score' and description 'Remove members by score range' indicate data modification.

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

How to control sorted_set_remove_by_score

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "sorted_set_remove_by_score": {
      "limits": [
        {
          "counter": "sorted_set_remove_by_score_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

sorted_set_remove_by_score 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.

  1. Create a free account and register Prometheus 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

Go deeper

Questions about sorted_set_remove_by_score

What does the sorted_set_remove_by_score tool do? +

Remove members by score range. It is categorised as a Write tool in the Prometheus 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 sorted_set_remove_by_score? +

Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for sorted_set_remove_by_score: 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 Prometheus MCP Server. Nothing to install.

What risk level is sorted_set_remove_by_score? +

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

Can I rate-limit sorted_set_remove_by_score? +

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

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

sorted_set_remove_by_score is provided by the Prometheus MCP Server MCP server (awslabs.prometheus-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 Prometheus MCP Server tool call.

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

Free to start. No card required.

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

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