AI agents call search_wikipedia_pages to retrieve information from Librarian without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data from Wikipedia without side effects. It matches the 'Read' category definition: searches and retrieves information for consumption. The severity is low because misuse would only result in retrieving potentially incorrect or irrelevant information, with no ability to modify systems or data. High confidence due to clear read-only semantics and non-destructive nature.
From the tool's definition Tool performs a search operation on Wikipedia and returns results. The description explicitly states it searches and returns information without any modification, creation, or deletion of data.
Attacks that exploit this kind of access
Search for Wikipedia pages on a certain word/topic and return the first 5 results with information to help choose the most relevant one. It is categorised as a Read tool in the Librarian MCP Server, which means it retrieves data without modifying state.
Register the Librarian MCP server in PolicyLayer and add a rule for search_wikipedia_pages: 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 Librarian. Nothing to install.
search_wikipedia_pages 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 search_wikipedia_pages 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 search_wikipedia_pages. 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.
search_wikipedia_pages is provided by the Librarian MCP server (mlziade/librarian). 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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