tasks_update

Update an existing task

SERVERVikunja SOURCE0xk3vin/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/0xk3vin-vikunja-mcp/tasks-update.md

WHAT IT DOES

What tasks_update does on Vikunja

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

RISK

Why tasks_update is rated Medium

This tool modifies existing task data, which is a Write operation. The change is reversible (tasks can be updated again or reverted), so it does not qualify as Destructive. Severity is medium because unintended task modifications could disrupt workflow and project management, but the impact is limited to individual task metadata rather than bulk deletion or financial transactions.

From the tool's definition Tool name is 'tasks_update' and description states 'Update an existing task', indicating modification of existing data in a reversible manner.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs tasks_update safely

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

tasks_update Rate-limited

tasks_update 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": {
    "tasks_update": {
      "limits": [
        {
          "counter": "tasks_update_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, apply this rule, and every tasks_update call is checked against it from then on.

FAQ

Questions about tasks_update

What does the tasks_update tool do? +

Update an existing task. It is categorised as a Write tool in the Vikunja MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on tasks_update? +

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

What risk level is tasks_update? +

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

Can I rate-limit tasks_update? +

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

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

tasks_update is provided by the Vikunja MCP server (0xk3vin/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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