Check page count and exact cost for a PDF before extracting. Free, no payment required.
AI agents call probe_pdf to retrieve information from Docpull without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
url | string | — | Publicly accessible URL of the PDF |
Parameters from the server's own tool schema.
This tool merely retrieves metadata (page count and cost estimate) from a PDF without creating, modifying, executing, or deleting anything. It is a read-only operation with minimal blast radius—an AI agent misusing this tool could only waste API calls on probing PDFs, not cause data loss or unauthorized operations.
From the tool's definition Tool performs a check/query operation ('Check page count and exact cost') with 'Free, no payment required' indicating it has no side effects.
Risk signalsAccepts URL/endpoint input (url)
Documented attack patterns abuse exactly the kind of access probe_pdf gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Docpull, and nothing reaches the server without passing your rules. This is the rule we recommend for probe_pdf:
{
"version": "1",
"default": "deny",
"tools": {
"probe_pdf": {}
}
}probe_pdf is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Check page count and exact cost for a PDF before extracting. Free, no payment required. It is categorised as a Read tool in the Docpull MCP Server, which means it retrieves data without modifying state.
probe_pdf accepts 1 parameter: url. The full parameter table on this page comes from the server's own tool schema.
Register the Docpull MCP server in PolicyLayer and add a rule for probe_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 Docpull. Nothing to install.
probe_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 probe_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 probe_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.
probe_pdf is provided by the Docpull MCP server (jesse-dxju/docpull). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Docpull, 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.
3 Docpull tools catalogued and risk-classified — across an index of 43,000+ MCP servers.