UpdateAHORunCache · AWS IoT SiteWise MCP Server MCP

WHAT IT DOES

What UpdateAHORunCache does on AWS IoT SiteWise MCP Server

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

WHY IT NEEDS A POLICY

Why UpdateAHORunCache needs a policy

Without a description, classification relies on the tool name alone. 'Update' operations typically modify data reversibly, placing this in the Write category rather than Read, Execute, or Destructive. However, the unfamiliar 'AHORunCache' acronym and empty description reduce confidence.

From the tool's definition Tool name 'UpdateAHORunCache' indicates modification of cache state. 'Update' is a reversible write operation. No destructive deletion or code execution is implied by the name.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

UpdateAHORunCache Rate-limited

UpdateAHORunCache 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "UpdateAHORunCache": {
      "limits": [
        {
          "counter": "updateahoruncache_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches AWS IoT SiteWise MCP Server, so you can run agents against it safely.

FAQ

Questions about UpdateAHORunCache

What does the UpdateAHORunCache tool do? +

UpdateAHORunCache. It is categorised as a Write tool in the AWS IoT SiteWise 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 UpdateAHORunCache? +

Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for UpdateAHORunCache: 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 IoT SiteWise MCP Server. Nothing to install.

What risk level is UpdateAHORunCache? +

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

Can I rate-limit UpdateAHORunCache? +

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

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

UpdateAHORunCache is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.