AI agents call openlibrary_search to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
q | string | Yes | |
page | number | — | |
limit | number | — |
Parameters from the server's own tool schema.
This tool retrieves book data from Open Library without side effects. It matches the Read category definition: queries data with no reversible or irreversible modifications. The blast radius of misuse is minimal—an agent might retrieve unwanted book information, but cannot harm systems, finances, or data integrity. Severity is low given the benign nature of book search queries.
From the tool's definition Tool description states 'Search books on Open Library' — a read-only query operation with no modification, deletion, or execution of code/commands.
Attacks that exploit this kind of access
Search books on Open Library. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
openlibrary_search accepts 3 parameters: q, page, limit. Required: q. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for openlibrary_search: 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 UnClick. Nothing to install.
openlibrary_search 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 openlibrary_search 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 openlibrary_search. 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.
openlibrary_search is provided by the UnClick MCP server (@unclick/mcp-server). 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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