vikunja_auth

Manage authentication with Vikunja API (connect, status, refresh, disconnect)

SERVERVikunja MCP Server SOURCEdemocratize-technology/vikunja-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/democratize-technology-vikunja-mcp/vikunja-auth.md

WHAT IT DOES

What vikunja_auth does on Vikunja MCP Server

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

RISK

Why vikunja_auth is rated Medium

Authentication management tools create, modify, or invalidate tokens and session state. While not destructive of data itself, misuse could grant unauthorized access to the instance, enable privilege escalation, or invalidate legitimate user sessions. This is a Write-category risk because it modifies system state (authentication tokens/sessions) reversibly—a user could re-authenticate.

From the tool's definition Tool description explicitly states 'connect, disconnect' operations which modify authentication state. 'Refresh' modifies tokens. These are state-changing operations that affect access control and session management for the Vikunja API.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs vikunja_auth safely

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

vikunja_auth Rate-limited

vikunja_auth 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": {
    "vikunja_auth": {
      "limits": [
        {
          "counter": "vikunja_auth_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 Vikunja MCP Server, apply this rule, and every vikunja_auth call is checked against it from then on.

FAQ

Questions about vikunja_auth

What does the vikunja_auth tool do? +

Manage authentication with Vikunja API (connect, status, refresh, disconnect). It is categorised as a Write tool in the Vikunja 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 vikunja_auth? +

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

What risk level is vikunja_auth? +

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

Can I rate-limit vikunja_auth? +

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

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

vikunja_auth is provided by the Vikunja MCP Server MCP server (democratize-technology/vikunja-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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