---
title: "Append a checklist item"
method: POST
path: "/api/cards/{cardId}/checklist"
tags: ["Checklist"]
---

# Append a checklist item

`POST /api/cards/{cardId}/checklist`

## Request

- Base URL: `https://tre-app.com`
- URL: `https://tre-app.com/api/cards/{cardId}/checklist`
- Auth: HTTP bearer

## Headers

- `Idempotency-Key` string

## Request body

- ChecklistItemCreate
  - `text` string, required: Text for one independently trackable source record, decision, execution step, or verification gate. Begin with a stable source identifier when one exists.
  - `assigneeUserId` string, uuid, nullable
  - `priority` 'none' | 'low' | 'normal' | 'high' | 'urgent'

## Response `201`

Success

- ChecklistItem
  - `id` string, uuid, required
  - `cardId` string, uuid, required
  - `text` string, required
  - `completed` boolean, required
  - `assigneeUserId` string, uuid, nullable, required
  - `order` integer, required
  - `priority` 'none' | 'low' | 'normal' | 'high' | 'urgent', required

## Other responses

- `400`: Invalid request
- `401`: Unauthenticated
- `403`: Forbidden: insufficient role or token scope; scope denials name the held scope and the operation
- `404`: Not found
- `409`: Conflict
- `422`: Idempotency-Key reused with a different request body (IDEMPOTENCY_KEY_REUSED)
- `429`: Rate limited
- `500`: Internal server error
- `503`: Temporarily unavailable

---

[API](https://skmtc.dev/tre-app/apis/tre-rest-api.md) · [All operations](https://skmtc.dev/tre-app/apis/tre-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tre-app/apis/tre-rest-api/revisions/26a7187a05fc?raw)