create_announcement

SERVERAIquila — Nextcloud MCP Server SOURCEelgorro/aiquila

Medium RISK CLASS

Category Write

Parameters 102 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aiquila-nextcloud-mcp-server/create-announcement.md

WHAT IT DOES

What create_announcement does on AIquila — Nextcloud MCP Server

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

Parameter	Type	Required	Description
`emails`	boolean	—	Send emails (default false)
`groups`	array	—	Group IDs to target, or ['everyone'] for all users (default)
`message`	string	Yes	The announcement body (Markdown supported)
`subject`	string	Yes	The announcement title (kept short)
`comments`	boolean	—	Allow comments (default true)
`activities`	boolean	—	Publish to the activity feed (default true)
`deleteTime`	number	—	Unix timestamp (seconds) to automatically delete the announcement
`plainMessage`	string	—	Plain-text version of the message (defaults to message)
`scheduleTime`	number	—	Unix timestamp (seconds) to publish the announcement later
`notifications`	boolean	—	Send notifications (default true)

Parameters from the server's own tool schema.

RISK

Why create_announcement is rated Medium

This tool creates and publishes new content (announcements) that affects multiple users via notifications/emails. It is reversible (announcements can be deleted/modified), so it falls under Write rather than Destructive. However, severity is high because misuse could spam all users or spread misinformation organization-wide. The admin-only requirement and explicit caution further support the high severity rating.

From the tool's definition Tool description states 'Create a new announcement' and 'visible to all or selected groups and can trigger notifications/emails'. The explicit warning 'use deliberately' and admin requirement indicate significant blast radius.

Risk signalsHigh parameter count (10 properties) · Admin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_announcement safely

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

create_announcement Rate-limited

create_announcement 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": {
    "create_announcement": {
      "limits": [
        {
          "counter": "create_announcement_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 AIquila — Nextcloud MCP Server, apply this rule, and every create_announcement call is checked against it from then on.

FAQ

Questions about create_announcement

What does the create_announcement tool do? +

Create a new announcement in the Announcement Center. This is visible to all or selected groups and can trigger notifications/emails — use deliberately. Requires the configured Nextcloud user to be an admin. It is categorised as a Write tool in the AIquila — Nextcloud MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does create_announcement accept? +

create_announcement accepts 10 parameters: emails, groups, message, subject, comments, activities, deleteTime, plainMessage, scheduleTime, notifications. Required: message, subject. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on create_announcement? +

Register the AIquila — Nextcloud MCP Server MCP server in PolicyLayer and add a rule for create_announcement: 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 AIquila — Nextcloud MCP Server. Nothing to install.

What risk level is create_announcement? +

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

Can I rate-limit create_announcement? +

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

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

create_announcement is provided by the AIquila — Nextcloud MCP Server MCP server (elgorro/aiquila). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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