file_upload

Upload a file (base64 encoded content) to the server.

SERVERAapanel SOURCEnipunanirmal/aapanel-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aapanel-mcp/file-upload.md

WHAT IT DOES

What file_upload does on Aapanel

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

RISK

Why file_upload is rated Medium

File upload is a Write operation—it creates or modifies data on the server. While reversible (files can be deleted), an AI agent could upload malicious files, overwrite critical application files, introduce vulnerabilities, or fill disk space. The high severity reflects the potential for system compromise, data integrity issues, or availability attacks. Confidence is high because the tool's purpose is unambiguous.

From the tool's definition Tool name is 'file_upload' and description states 'Upload a file (base64 encoded content) to the server.' This directly creates new files on the system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs file_upload safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Aapanel, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For file_upload, this is the rule to start with:

file_upload Rate-limited

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": {
    "file_upload": {
      "limits": [
        {
          "counter": "file_upload_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aapanel, apply this rule, and every file_upload call is checked against it from then on.

FAQ

Questions about file_upload

What does the file_upload tool do? +

Upload a file (base64 encoded content) to the server. It is categorised as a Write tool in the Aapanel MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on file_upload? +

Register the Aapanel MCP server in PolicyLayer and add a rule for 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 Aapanel. Nothing to install.

What risk level is file_upload? +

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

Can I rate-limit file_upload? +

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

Set action: deny in the PolicyLayer policy for 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 file_upload? +

file_upload is provided by the Aapanel MCP server (nipunanirmal/aapanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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