Ask for content in plain English. Automatically selects the best sources from all 61 libraries, generates optimized per-source queries, and searches in parallel. Returns unified, deduplicated results. Examples:
AI agents call library_ask to retrieve information from Alexandria MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
library_ask is fundamentally a search and retrieval tool that queries multiple library sources and returns information. It performs no side effects, does not modify data, execute code, or trigger external operations—it only reads and aggregates content.
From the tool's definition Tool description states it 'searches' and 'returns unified, deduplicated results' from 61 public digital libraries.
Attacks that exploit this kind of access
Ask for content in plain English. Automatically selects the best sources from all 61 libraries, generates optimized per-source queries, and searches in parallel. Returns unified, deduplicated results. Examples:. It is categorised as a Read tool in the Alexandria MCP MCP Server, which means it retrieves data without modifying state.
Register the Alexandria MCP server in PolicyLayer and add a rule for library_ask: 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 Alexandria MCP. Nothing to install.
library_ask 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 library_ask 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 library_ask. 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.
library_ask is provided by the Alexandria MCP server (the-40-thieves/alexandria-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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