Tasks

Create a task relation

Relate a task to another task of your company (target_task_id) with a type: subtask, blocks or related. A task cannot relate to itself (422 task_self_relation), a relation that would close a cycle is rejected (422 task_relation_cycle) and an existing one returns 409 task_relation_exists.

post/companies/{company}/tasks/{task}/relations

Request

  • Base URL: https://api.factuarea.com/v1
  • URL: https://api.factuarea.com/v1/companies/{company}/tasks/{task}/relations
  • Auth: one of:
    • HTTP bearer
    • API key in header X-API-Key

Path parameters

companystring uuid required

Public identifier (UUID v7) of the company. Get it from GET /v1/me (data.scope[].id).

taskstring uuid required

Public identifier (UUID v7) of the task.

Headers

Idempotency-Keystring
Example:01928f10-7c0e-7c4a-9b7d-2f8a6e3c1d4b

Client-generated opaque key (up to 255 characters; UUID v7 recommended) that makes retries safe: the first response is cached and replayed for repeats without re-executing the mutation. Reusing a key with a different body returns 422 idempotency_key_reused; the values of secret fields (password, secret…) count as part of the body, so retrying with a corrected secret under the same key is a different request, never the replay of the earlier answer. See the Idempotency guide.

Factuarea-Versionstring date
Example:2026-06-01

Pin the API version (YYYY-MM-DD, Stripe-style date versioning) for this request; omit to use the key's pinned version, or the latest if none. Unsupported version → 400 unsupported_api_version; malformed → 400 parameter_invalid_format. The effective version is echoed in the Factuarea-Version response header. See the Versioning guide.

Request body

target_task_idstring uuid required

Public identifier (UUID v7) of the target task of the relation, from the same company.

type'subtask' | 'blocks' | 'related' required

Relation type: subtask (the target task is a subtask of the task in the path), blocks (the task in the path blocks the target task) or related.

Response

Example response

{
  "data": {
    "id": "0193a4f2-bc86-7a77-8b18-0d2e4f6a8c01",
    "object": "task_relation",
    "type": "blocks",
    "source_task_id": "0193a4f2-8f53-7d44-8e85-7a9b1c3d5f12",
    "target_task_id": "0193a4f2-8f53-7d44-8e85-7a9b1c3d5f13",
    "direction": "blocks",
    "related_task": {
      "id": "0193a4f2-8f53-7d44-8e85-7a9b1c3d5f13",
      "key": "DEV-13",
      "title": "Revisar los textos legales del pie de página",
      "status": "active",
      "completed": false,
      "priority": "medium",
      "assignee_id": "0193a4f2-6b1c-7d3e-8a41-2c5e7f9a1b02",
      "project_id": "0193a4f2-7c20-7a11-8b52-4d6e8f0a2c01"
    },
    "created_at": "2026-09-16T08:32:10+02:00"
  }
}

Changes

No recorded changes to this operation across all 1 revision of this API.