sync_zotero_library · Metis Public Health MCP: Risk & Policy

WHAT IT DOES

What sync_zotero_library does on Metis Public Health

AI agents use sync_zotero_library 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 sync_zotero_library needs a policy

Based on the name alone, syncing a Zotero library typically involves reading from Zotero and writing/updating local index data (adding or modifying bibliographic records). This is a Write-level operation as it creates or updates local library entries. Confidence is low due to the empty description; it could also involve deletions or just reading, but 'sync' most commonly implies bidirectional or inbound data writes.

From the tool's definition Tool name 'sync_zotero_library' — description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sync_zotero_library Rate-limited

sync_zotero_library 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": {
    "sync_zotero_library": {
      "limits": [
        {
          "counter": "sync_zotero_library_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 sync_zotero_library

What does the sync_zotero_library tool do? +

sync_zotero_library. 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 sync_zotero_library? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for sync_zotero_library: 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 sync_zotero_library? +

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

Can I rate-limit sync_zotero_library? +

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

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

sync_zotero_library 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.