get_price_list_urls

THE RISK

Low Risk

Why get_price_list_urls needs a policy

The tool appears to retrieve pricing information (URLs) from AWS, which is a read-only operation. No description is provided to suggest write, execute, destructive, or financial operations. While pricing data retrieval could theoretically inform financial decisions, the tool itself merely retrieves informational URLs rather than executing transactions or financial operations.

From the tool's definition Tool name 'get_price_list_urls' indicates retrieval of pricing list URLs with no modification capability. Description is empty, limiting direct confirmation, but the naming pattern and context of a Prometheus/AWS server suggest this queries or retrieves data.

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

POLICY

How to control get_price_list_urls

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 get_price_list_urls:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_price_list_urls": {}
  }
}

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

Create a free account and register Prometheus 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_price_list_urls

What does the get_price_list_urls tool do? +

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

How do I enforce a policy on get_price_list_urls? +

Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for get_price_list_urls: 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 get_price_list_urls? +

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

Can I rate-limit get_price_list_urls? +

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

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

get_price_list_urls 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.

CHECK YOUR STACK →