Add one or more items to a collection by their item keys.
AI agents use add_items_to_collection to create or update resources in Zotero Agent — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Zotero Agent environment.
This tool modifies collection state by adding items to collections. This is a reversible Write operation (items can be removed, collections are not deleted). The blast radius is low—accidental mass addition of items could clutter collections but doesn't destroy data and can be undone by removing items. No data deletion, no code execution, no financial impact.
From the tool's definition Tool name 'add_items_to_collection' and description 'Add one or more items to a collection by their item keys' explicitly indicate creation/modification of collection membership.
Attacks that exploit this kind of access
Add one or more items to a collection by their item keys. It is categorised as a Write tool in the Zotero Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Zotero Agent MCP server in PolicyLayer and add a rule for add_items_to_collection: 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 Agent. Nothing to install.
add_items_to_collection is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the add_items_to_collection 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 add_items_to_collection. 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.
add_items_to_collection is provided by the Zotero Agent MCP server (psiQAQ/zotero-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
add_items_to_collection is one line of Zotero Agent'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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