UpdateAHORunCache | PolicyLayer

WHAT IT DOES

What UpdateAHORunCache does on Amazon Bedrock Knowledge Base Retrieval MCP Server

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

THE RISK

Medium Risk

Why UpdateAHORunCache needs a policy

The 'Update' verb suggests the tool creates or modifies data. Without a description, the severity cannot be determined with high confidence, but cache updates are typically reversible (low-to-medium impact). Given the context of an AWS Bedrock Knowledge Base Retrieval server and the name pattern suggesting cache management, this is classified as Write rather than Execute or Destructive.

From the tool's definition Tool name 'UpdateAHORunCache' indicates modification of a cache object ('Update'). The description is empty, providing no clarification of side effects or reversibility.

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

POLICY

How to control UpdateAHORunCache

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

policy.json

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

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.

Create a free account and register Amazon Bedrock Knowledge Base Retrieval 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.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Amazon Bedrock Knowledge Base Retrieval MCP Server tools

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Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
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PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about UpdateAHORunCache

What does the UpdateAHORunCache tool do? +

UpdateAHORunCache. It is categorised as a Write tool in the Amazon Bedrock Knowledge Base Retrieval 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 Amazon Bedrock Knowledge Base Retrieval 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 Amazon Bedrock Knowledge Base Retrieval 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 Amazon Bedrock Knowledge Base Retrieval MCP Server MCP server (awslabs.bedrock-kb-retrieval-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 Bedrock Knowledge Base Retrieval MCP Server tool call.

Start from Amazon Bedrock Knowledge Base Retrieval 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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805 Amazon Bedrock Knowledge Base Retrieval MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.