AI agents call list_pdfs to retrieve information from MCP PDF Forms without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries information about PDF files within designated directories. It has no side effects, does not modify data, execute code, delete files, or interact with financial systems. The operation is purely informational—listing files is a standard read operation.
From the tool's definition Tool name 'list_pdfs' combined with description 'List PDF files in configured base paths' indicates a directory listing operation with no modification or execution.
Documented attack patterns abuse exactly the kind of access list_pdfs gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP PDF Forms, and nothing reaches the server without passing your rules. This is the rule we recommend for list_pdfs:
{
"version": "1",
"default": "deny",
"tools": {
"list_pdfs": {}
}
}list_pdfs is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List PDF files in configured base paths. It is categorised as a Read tool in the MCP PDF Forms MCP Server, which means it retrieves data without modifying state.
Register the MCP PDF Forms MCP server in PolicyLayer and add a rule for list_pdfs: 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 PDF Forms. Nothing to install.
list_pdfs 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 list_pdfs 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 list_pdfs. 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.
list_pdfs is provided by the MCP PDF Forms MCP server (wildebeest/mcp_pdf_forms). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP PDF Forms, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 MCP PDF Forms tools catalogued and risk-classified — across an index of 43,000+ MCP servers.