cache_gets

THE RISK

Low Risk

Why cache_gets needs a policy

This tool retrieves data from a cache system. The use of 'Get' and the mention of retrieving 'a value and its CAS token' indicates a read-only operation with no side effects. No data is created, modified, deleted, or executed. The CAS (Compare-And-Swap) token is used for optimistic locking but the tool itself only reads and returns values.

From the tool's definition Tool name 'cache_gets' and description 'Get a value and its CAS token from the cache' indicate retrieval of cached data with no modification.

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

POLICY

How to control cache_gets

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

policy.json

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

cache_gets 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 Amazon EKS 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

Related tools and policies

More Amazon EKS MCP Server tools

Destructive bulk_delete_by_criteria bulk_delete_by_criteria Destructive cache_delete Delete a value from the cache. Destructive cache_delete_many Delete multiple values from the cache. Destructive cache_delete_multi Delete multiple values from the cache (alias for delete_many). Destructive delete delete Destructive delete_access_key delete_access_key Destructive delete_agent_runtime delete_agent_runtime Destructive delete_agent_runtime_endpoint delete_agent_runtime_endpoint

All 805 Amazon EKS MCP Server tools →

Read tools on other servers

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about cache_gets

What does the cache_gets tool do? +

Get a value and its CAS token from the cache. It is categorised as a Read tool in the Amazon EKS MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on cache_gets? +

Register the Amazon EKS MCP Server MCP server in PolicyLayer and add a rule for cache_gets: 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 Amazon EKS MCP Server. Nothing to install.

What risk level is cache_gets? +

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

Can I rate-limit cache_gets? +

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

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

cache_gets is provided by the Amazon EKS MCP Server MCP server (awslabs.eks-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 Amazon EKS MCP Server tool call.

Start from Amazon EKS 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 →