Low Risk

search_books

Search Naver Book catalog by title, author, or ISBN.

How to control search_books ↓

What search_books does on Naver Search

AI agents call search_books to retrieve information from Naver Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

ParameterTypeRequiredDescription
query string Search query. Must be UTF-8 encoded.
start integer Result offset (1-indexed). Default 1, max 1000.
d_auth string Restrict to a specific author.
d_isbn string Restrict to a specific ISBN.
d_publ string Restrict to a specific publisher.
d_titl string Restrict to books matching this title (precise).
display integer Number of results to return per page. Default 10, max 100.

Parameters from the server's own tool schema.

Low Risk

Why search_books needs a policy

This tool retrieves information from a book catalog without creating, modifying, deleting, executing code, or committing financial transactions. It is a straightforward read-only query operation. The low severity reflects minimal risk even if misused by an AI agent, as it only exposes public book search data.

From the tool's definition Tool name is 'search_books' and description states it 'Search[es] Naver Book catalog by title, author, or ISBN.' The verb 'search' and the context of querying a catalog indicate data retrieval with no modification or side effects.

Risk signalsAccepts freeform code/query input (query)

Documented attack patterns abuse exactly the kind of access search_books gives an agent:

How to control search_books

PolicyLayer is an MCP gateway — it sits between your AI agents and Naver Search, and nothing reaches the server without passing your rules. This is the rule we recommend for search_books:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_books": {}
  }
}

search_books is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Naver Search — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about search_books

What does the search_books tool do? +

Search Naver Book catalog by title, author, or ISBN. It is categorised as a Read tool in the Naver Search MCP Server, which means it retrieves data without modifying state.

What parameters does search_books accept? +

search_books accepts 7 parameters: query, start, d_auth, d_isbn, d_publ, d_titl, display. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on search_books? +

Register the Naver Search MCP server in PolicyLayer and add a rule for search_books: 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 Naver Search. Nothing to install.

What risk level is search_books? +

search_books is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit search_books? +

Yes. Add a rate_limit block to the search_books 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.

How do I block search_books completely? +

Set action: deny in the PolicyLayer policy for search_books. 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.

What MCP server provides search_books? +

search_books is provided by the Naver Search MCP server (@isnow890/naver-search-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Naver Search tool call.

Start from Naver Search, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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12 Naver Search tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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