# task_relations_add

Create a relation between two tasks

Agent View of the PolicyLayer registry record for `task_relations_add`. HTML page: https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-relations-add

## Facts

- Tool: `task_relations_add`
- Server: Vikunja (`0xk3vin/vikunja-mcp`) — https://policylayer.com/tools/0xk3vin-vikunja-mcp.md
- Homepage: https://github.com/0xK3vin/vikunja-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "task_relations_add",
    "arguments": {}
  }
}
```

## Why task_relations_add is rated Medium

This tool creates a new relationship between existing tasks, which is a write operation that modifies the task graph structure. While this can be reversed (the relation can presumably be deleted), it modifies application state. It is not destructive (no deletion), not a read-only operation (it changes data), not Execute (no code/command execution), and not Financial.

From the tool's own definition: "Tool name 'task_relations_add' and description 'Create a relation between two tasks' indicate creating/modifying data. The verb 'Create' and action 'add' show reversible data modification without permanent deletion or code execution."

## Use case

AI agents use task_relations_add 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Vikunja:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "task_relations_add": {
      "limits": [
        {
          "counter": "task_relations_add_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Vikunja (30)

- `buckets_delete` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/buckets-delete.md
- `labels_delete` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/labels-delete.md
- `projects_delete` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/projects-delete.md
- `task_assignees_remove` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-assignees-remove.md
- `task_labels_remove` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-labels-remove.md
- `task_relations_remove` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-relations-remove.md
- `tasks_delete` — Destructive — https://policylayer.com/tools/0xk3vin-vikunja-mcp/tasks-delete.md
- `buckets_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/buckets-list.md
- `labels_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/labels-list.md
- `notifications_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/notifications-list.md
- `ping` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/ping.md
- `project_views_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/project-views-list.md
- `projects_get` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/projects-get.md
- `projects_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/projects-list.md
- `task_assignees_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-assignees-list.md
- `task_comments_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-comments-list.md
- `tasks_get` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/tasks-get.md
- `tasks_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/tasks-list.md
- `teams_list` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/teams-list.md
- `users_search` — Read — https://policylayer.com/tools/0xk3vin-vikunja-mcp/users-search.md
- `buckets_create` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/buckets-create.md
- `labels_create` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/labels-create.md
- `projects_create` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/projects-create.md
- `projects_update` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/projects-update.md
- `task_assignees_add` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-assignees-add.md
- `task_comments_add` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-comments-add.md
- `task_labels_add` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-labels-add.md
- `task_move_to_bucket` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/task-move-to-bucket.md
- `tasks_create` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/tasks-create.md
- `tasks_update` — Write — https://policylayer.com/tools/0xk3vin-vikunja-mcp/tasks-update.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xk3vin-vikunja-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xk3vin-vikunja-mcp