upload · Moxis MCP: Risk & Policy

WHAT IT DOES

What upload does on Moxis

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

PARAMETERS

Parameter	Type	Required	Description
`id`	string	Yes	moxis instance url or alias
`path`	string	Yes	path to pdf file

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why upload needs a policy

The upload function creates or adds a new document to MOXIS and generates a corresponding URL. This is a reversible write operation—documents can typically be deleted or modified later. It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool description states it 'uploads document to MOXIS and returns an url', which is a create/write operation that adds new data to the system.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upload Rate-limited

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": {
    "upload": {
      "limits": [
        {
          "counter": "upload_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 Moxis, so you can run agents against it safely.

FAQ

Questions about upload

What does the upload tool do? +

uploads document to MOXIS and returns an url. It is categorised as a Write tool in the Moxis MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does upload accept? +

upload accepts 2 parameters: id, path. Required: id, path. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on upload? +

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

What risk level is upload? +

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

Can I rate-limit upload? +

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

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

upload is provided by the Moxis MCP server (@xitrust-pub/moxis-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.