send_file_upload · Notion MCP Server MCP: Risk & Policy

WHAT IT DOES

What send_file_upload does on Notion MCP Server

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

WHY IT NEEDS A POLICY

Why send_file_upload needs a policy

This tool creates or modifies data (uploads files) with reversible effects—files can be deleted or replaced. It does not execute code, delete irreversibly, or move money, so Write is the appropriate category. Severity is medium because file uploads can consume storage and potentially introduce unwanted content, but the impact is localized to the user's Notion workspace and reversible.

From the tool's definition Tool name 'send_file_upload' and description 'Send file upload content' indicate the tool uploads/writes file data to Notion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_file_upload Rate-limited

send_file_upload 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": {
    "send_file_upload": {
      "limits": [
        {
          "counter": "send_file_upload_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about send_file_upload

What does the send_file_upload tool do? +

Send file upload content. It is categorised as a Write tool in the Notion 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 send_file_upload? +

Register the Notion MCP Server MCP server in PolicyLayer and add a rule for send_file_upload: 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 Notion MCP Server. Nothing to install.

What risk level is send_file_upload? +

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

Can I rate-limit send_file_upload? +

Yes. Add a rate_limit block to the send_file_upload 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 send_file_upload completely? +

Set action: deny in the PolicyLayer policy for send_file_upload. 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 send_file_upload? +

send_file_upload is provided by the Notion MCP Server MCP server (lrgex/notion-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.