list-cost-allocation-tag-backfill-history

THE RISK

Low Risk

Why list-cost-allocation-tag-backfill-history needs a policy

The tool appears to query or retrieve historical information about cost allocation tag backfill operations, which is a read-only retrieval operation. Even though the description is empty, the verb 'list' combined with 'history' strongly suggests data retrieval without side effects. Confidence is reduced from 0.8 to 0.7 due to missing description that would confirm the operation is purely informational.

From the tool's definition Tool name 'list-cost-allocation-tag-backfill-history' indicates listing/querying historical data about cost allocation tag backfill operations. The 'list' prefix and 'history' context suggest retrieval of past records with no modification capability.

Risk signalsBulk/mass operation — affects multiple targets

Documented attack patterns abuse exactly the kind of access list-cost-allocation-tag-backfill-history gives an agent:

POLICY

How to control list-cost-allocation-tag-backfill-history

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 list-cost-allocation-tag-backfill-history:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list-cost-allocation-tag-backfill-history": {}
  }
}

list-cost-allocation-tag-backfill-history 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.

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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 list-cost-allocation-tag-backfill-history

What does the list-cost-allocation-tag-backfill-history tool do? +

list-cost-allocation-tag-backfill-history. 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 list-cost-allocation-tag-backfill-history? +

Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for list-cost-allocation-tag-backfill-history: 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 list-cost-allocation-tag-backfill-history? +

list-cost-allocation-tag-backfill-history is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list-cost-allocation-tag-backfill-history? +

Yes. Add a rate_limit block to the list-cost-allocation-tag-backfill-history 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 list-cost-allocation-tag-backfill-history completely? +

Set action: deny in the PolicyLayer policy for list-cost-allocation-tag-backfill-history. 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 list-cost-allocation-tag-backfill-history? +

list-cost-allocation-tag-backfill-history 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.

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