update_patient_study_metadata · Awslabs Valkey MCP

WHAT IT DOES

What update_patient_study_metadata does on Awslabs Valkey

AI agents use update_patient_study_metadata to create or update resources in Awslabs Valkey — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Awslabs Valkey environment.

WHY IT NEEDS A POLICY

Why update_patient_study_metadata needs a policy

The tool modifies patient study metadata, which is reversible (characteristic of Write category). The empty description prevents complete confidence assessment, but the verb 'update' combined with sensitive healthcare data context suggests medium severity due to potential impact on patient records.

From the tool's definition Tool name 'update_patient_study_metadata' contains 'update', indicating modification of existing data. No destructive language (delete, drop, purge) is present, and no financial operations are implied.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_patient_study_metadata Rate-limited

update_patient_study_metadata 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": {
    "update_patient_study_metadata": {
      "limits": [
        {
          "counter": "update_patient_study_metadata_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 Awslabs Valkey, so you can run agents against it safely.

FAQ

Questions about update_patient_study_metadata

What does the update_patient_study_metadata tool do? +

update_patient_study_metadata. It is categorised as a Write tool in the Awslabs Valkey MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_patient_study_metadata? +

Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for update_patient_study_metadata: 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 Awslabs Valkey. Nothing to install.

What risk level is update_patient_study_metadata? +

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

Can I rate-limit update_patient_study_metadata? +

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

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

update_patient_study_metadata is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.