Library overview: total items, collections, top tags, and last modified item.
AI agents call get_library_stats to retrieve information from Zotero Assistant without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool exclusively retrieves and queries library statistics and metadata. It has no side effects, performs no data modifications, and cannot alter, delete, or execute operations. The blast radius of misuse is minimal—an agent could at worst gain visibility into library structure and composition, which poses no destructive or financial risk.
From the tool's definition The tool 'get_library_stats' returns library overview information: 'total items, collections, top tags, and last modified item.' These are read-only operations that retrieve aggregate metadata about the library without modifying any data.
Attacks that exploit this kind of access
Library overview: total items, collections, top tags, and last modified item. It is categorised as a Read tool in the Zotero Assistant MCP Server, which means it retrieves data without modifying state.
Register the Zotero Assistant MCP server in PolicyLayer and add a rule for get_library_stats: 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 Assistant. Nothing to install.
get_library_stats 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_library_stats 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_library_stats. 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_library_stats is provided by the Zotero Assistant MCP server (upascal/zotero-assistant-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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