AI agents use pdf_make_unsearchable to create or update resources in PDF Co MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PDF Co MCP Server environment.
This tool modifies PDF content/metadata (making text unsearchable) without permanently destroying data—the operation is theoretically reversible (a searchable version could be regenerated from the original). It falls under Write rather than Destructive because searchability is a property/index rather than core data deletion.
From the tool's definition Tool name 'pdf_make_unsearchable' indicates modification of PDF properties by removing searchability, which is a reversible data modification operation. Description is empty, limiting confidence.
Documented attack patterns abuse exactly the kind of access pdf_make_unsearchable gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PDF Co MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for pdf_make_unsearchable:
{
"version": "1",
"default": "deny",
"tools": {
"pdf_make_unsearchable": {
"limits": [
{
"counter": "pdf_make_unsearchable_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}pdf_make_unsearchable stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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pdf_make_unsearchable. It is categorised as a Write tool in the PDF Co MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PDF Co MCP Server MCP server in PolicyLayer and add a rule for pdf_make_unsearchable: 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 PDF Co MCP Server. Nothing to install.
pdf_make_unsearchable is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pdf_make_unsearchable 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 pdf_make_unsearchable. 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.
pdf_make_unsearchable is provided by the PDF Co MCP Server MCP server (pdfdotco/pdfco-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PDF Co MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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38 PDF Co MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.