save_review · Metis Public Health MCP: Risk & Policy

WHAT IT DOES

What save_review does on Metis Public Health

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

WHY IT NEEDS A POLICY

Why save_review needs a policy

The tool creates or modifies a review record in the user's local knowledge base. This is reversible (reviews can be edited or deleted), so it qualifies as Write rather than Destructive. Severity is medium because an AI agent could write misleading or sensitive reviews into the user's research library, but the impact is limited to the local system and the data remains editable.

From the tool's definition Tool name 'save_review' indicates persistent storage of review data. The sibling tools include 'add_glossary_term', 'add_journal_entry', 'add_memory_entry', 'add_tracked_file', establishing a pattern of Write operations on this server that create or modify…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_review Rate-limited

save_review 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": {
    "save_review": {
      "limits": [
        {
          "counter": "save_review_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 Metis Public Health, so you can run agents against it safely.

FAQ

Questions about save_review

What does the save_review tool do? +

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

How do I enforce a policy on save_review? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for save_review: 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 Metis Public Health. Nothing to install.

What risk level is save_review? +

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

Can I rate-limit save_review? +

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

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

save_review is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.