AI agents call get_item_fields to retrieve information from Zotero without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema/metadata information about available fields for Zotero item types. It is a read-only query operation with no side effects, no data modification, no code execution, and no destructive capability. The blast radius of misuse is minimal—at worst, an agent learns the structure of item types, which is not sensitive information in the context of a reference management system.
From the tool's definition Tool name 'get_item_fields' and description 'Get available fields for a specific item type' indicate a retrieval operation that queries metadata about item structure without modifying or executing anything.
Attacks that exploit this kind of access
Get available fields for a specific item type. It is categorised as a Read tool in the Zotero MCP Server, which means it retrieves data without modifying state.
Register the Zotero MCP server in PolicyLayer and add a rule for get_item_fields: 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 Zotero. Nothing to install.
get_item_fields is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_item_fields 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.
Set action: deny in the PolicyLayer policy for get_item_fields. 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.
get_item_fields is provided by the Zotero MCP server (cr625/zotero-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_item_fields is one line of Zotero's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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