cache_get

Get a value from the cache. Args: key: The key to retrieve Returns: Value or error message

SERVERAWS SOURCE@awslabs/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/aws/cache-get.md

WHAT IT DOES

What cache_get does on AWS

AI agents call cache_get to retrieve information from AWS without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why cache_get is rated Low

This is a straightforward cache retrieval operation that queries data without side effects. It takes a key as input and returns a value or error message, which is a typical Read operation. No data is modified, deleted, or executed. Severity is low because misuse would only expose cached data that the requester may already have access to.

From the tool's definition Tool name is 'cache_get' and description states it retrieves 'a value from the cache' with no modification, deletion, or execution capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cache_get safely

PolicyLayer is an MCP gateway: it sits between your AI agents and AWS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cache_get, this is the rule to start with:

cache_get Allowed

cache_get is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect AWS, apply this rule, and every cache_get call is checked against it from then on.

FAQ

Questions about cache_get

What does the cache_get tool do? +

Get a value from the cache. Args: key: The key to retrieve Returns: Value or error message. It is categorised as a Read tool in the AWS MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on cache_get? +

Register the AWS MCP server in PolicyLayer and add a rule for cache_get: 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 AWS. Nothing to install.

What risk level is cache_get? +

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

Can I rate-limit cache_get? +

Yes. Add a rate_limit block to the cache_get 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_get completely? +

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

cache_get is provided by the AWS MCP server (@awslabs/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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