AI agents call search_pdf to retrieve information from MCP Document Reader without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs document search operations, which retrieve information from PDF files without modifying, deleting, or executing code. This is a Read category operation with low risk—the worst outcome of misuse is returning unwanted document excerpts to the user.
From the tool's definition Tool name is 'search_pdf' with empty description, but sibling tools on this server (get_epub_metadata, get_pdf_metadata, read_epub_page_range, read_pdf_pages, etc.) are all read-only query operations.
Documented attack patterns abuse exactly the kind of access search_pdf gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Document Reader, and nothing reaches the server without passing your rules. This is the rule we recommend for search_pdf:
{
"version": "1",
"default": "deny",
"tools": {
"search_pdf": {}
}
}search_pdf is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
search_pdf. It is categorised as a Read tool in the MCP Document Reader MCP Server, which means it retrieves data without modifying state.
Register the MCP Document Reader MCP server in PolicyLayer and add a rule for search_pdf: 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 MCP Document Reader. Nothing to install.
search_pdf 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_pdf 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_pdf. 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_pdf is provided by the MCP Document Reader MCP server (jbchouinard/mcp-document-reader). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Document Reader, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
8 MCP Document Reader tools catalogued and risk-classified — across an index of 43,000+ MCP servers.