update-file

Uploads a new revision of an existing file from the local disk, preserving prior revisions in the file history, and returns the file title and URL. The upload appears in the wiki

ServerMediawiki Mcp Server Olioex
CategoryWrite

How to control update-file ↓

WHAT IT DOES

What update-file does on Mediawiki Mcp Server Olioex

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

THE RISK

Medium Risk

Why update-file needs a policy

This tool creates or modifies data reversibly by uploading a new file revision while preserving prior revisions in history. It does not delete data (Destructive), execute arbitrary code (Execute), or involve financial transactions (Financial).

From the tool's definition Tool description explicitly states 'Uploads a new revision of an existing file' and 'The upload appears in the wiki', indicating modification of existing wiki content.

Documented attack patterns abuse exactly the kind of access update-file gives an agent:

POLICY

How to control update-file

PolicyLayer is an MCP gateway — it sits between your AI agents and Mediawiki Mcp Server Olioex, and nothing reaches the server without passing your rules. This is the rule we recommend for update-file:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update-file": {
      "limits": [
        {
          "counter": "update-file_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

update-file 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 Mediawiki Mcp Server Olioex — 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 Mediawiki Mcp Server Olioex tools

Destructive delete-page Removes a wiki page from public view and returns the deleted title. This is a soft delete: Destructive neowiki-delete-subject Deletes one NeoWiki Subject by ID from its page. Enabled only when the wiki has NeoWiki in Destructive undelete-page Restores a previously deleted wiki page, including its full revision history, and returns Execute cargo-query Returns rows from one or more Cargo tables on the targeted wiki, matching a SQL-style filt Execute smw-query Runs a Semantic MediaWiki Write create-page Creates a new wiki page with the provided content and returns the new page Write move-page Renames a wiki page, moving it — and by default its talk page — to a new title, and return Write neowiki-set-main-subject Sets which existing Subject on a wiki page is its Main Subject, or clears it. Enabled only

All 38 Mediawiki Mcp Server Olioex 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 update-file

What does the update-file tool do? +

Uploads a new revision of an existing file from the local disk, preserving prior revisions in the file history, and returns the file title and URL. The upload appears in the wiki. It is categorised as a Write tool in the Mediawiki Mcp Server Olioex MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update-file? +

Register the Mediawiki Mcp Server Olioex MCP server in PolicyLayer and add a rule for update-file: 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 Mediawiki Mcp Server Olioex. Nothing to install.

What risk level is update-file? +

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

Can I rate-limit update-file? +

Yes. Add a rate_limit block to the update-file 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 update-file completely? +

Set action: deny in the PolicyLayer policy for update-file. 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 update-file? +

update-file is provided by the Mediawiki Mcp Server Olioex MCP server (mediawiki-mcp-server-olioex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mediawiki Mcp Server Olioex tool call.

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

CHECK YOUR STACK →

Free to start. No card required.

38 Mediawiki Mcp Server Olioex tools catalogued and risk-classified — across an index of 43,000+ MCP servers.