upload_document

THE RISK

Medium Risk

Why upload_document needs a policy

Uploading a document is a reversible write operation that creates new content or adds files to the repository. It is not destructive (not irreversible), not financial, and not arbitrary code execution. While the tool modifies the state of the Alfresco repository, the operation can be undone by deleting the uploaded document.

From the tool's definition Tool name is 'upload_document' and description states 'Upload a document to Alfresco.' This action creates or modifies data in the content management system by adding new documents.

Documented attack patterns abuse exactly the kind of access upload_document gives an agent:

POLICY

How to control upload_document

PolicyLayer is an MCP gateway — it sits between your AI agents and Alfresco MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for upload_document:

policy.json

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

upload_document 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.

Create a free account and register Alfresco MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Alfresco MCP Server tools

Destructive cancel_checkout Cancel checkout of a document, discarding any working copy. Destructive delete_node Delete a document or folder from Alfresco. Execute cmis_search Search using CMIS SQL syntax. Default query searches for PDF documents. Write checkin_document Check in a document after editing using Alfresco REST API. Write checkout_document Check out a document for editing using Alfresco REST API. Write create_folder Create a new folder in Alfresco. Write update_node_properties Update metadata and properties of a document or folder. Read advanced_search Advanced search with sorting and filtering capabilities.

All 15 Alfresco MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about upload_document

What does the upload_document tool do? +

Upload a document to Alfresco. It is categorised as a Write tool in the Alfresco 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 upload_document? +

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

What risk level is upload_document? +

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

Can I rate-limit upload_document? +

Yes. Add a rate_limit block to the upload_document 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_document completely? +

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

upload_document is provided by the Alfresco MCP Server MCP server (stevereiner/python-alfresco-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Alfresco MCP Server tool call.

Start from Alfresco MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →