export_pdf · AI-Canvas MCP Server MCP: Risk & Policy

WHAT IT DOES

What export_pdf does on AI-Canvas MCP Server

AI agents use export_pdf to create or update resources in AI-Canvas MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AI-Canvas MCP Server environment.

WHY IT NEEDS A POLICY

Why export_pdf needs a policy

Exporting to PDF creates a new file output based on design nodes, which is a write operation that generates data. While not destructive (the original design remains intact) and not immediately dangerous, it creates an artifact that could be misused (e.g., exporting sensitive designs without authorization, or generating files that bypass access controls).

From the tool's definition Tool name 'export_pdf' and description 'Export design nodes to PDF documents' indicate creation of a new file artifact (PDF) from existing design data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

export_pdf Rate-limited

export_pdf 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "export_pdf": {
      "limits": [
        {
          "counter": "export_pdf_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches AI-Canvas MCP Server, so you can run agents against it safely.

FAQ

Questions about export_pdf

What does the export_pdf tool do? +

Export design nodes to PDF documents. It is categorised as a Write tool in the AI-Canvas MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on export_pdf? +

Register the AI-Canvas MCP Server MCP server in PolicyLayer and add a rule for export_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 AI-Canvas MCP Server. Nothing to install.

What risk level is export_pdf? +

export_pdf is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit export_pdf? +

Yes. Add a rate_limit block to the export_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.

How do I block export_pdf completely? +

Set action: deny in the PolicyLayer policy for export_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.

What MCP server provides export_pdf? +

export_pdf is provided by the AI-Canvas MCP Server MCP server (laoluojuhai/ai-canvas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.