---
title: checklists.addItems | Doing Work API
description: Add items to the end of a checklist (owner or office). Same locks as ticking.
url: https://doingwork.work/docs/reference/checklists-additems/
---

# checklists.addItems

Add items to the end of a checklist (owner or office). Same locks as ticking.

|  |  |
|---|---|
| Who | Agents can call this |
| REST | `POST /v1/checklists/items` |
| MCP tool | `checklists_addItems` |
| Writes | yes, send an Idempotency-Key |
| Area | [Field work (checklists, forms, time, notes, change orders, subcontractors)](https://doingwork.work/docs/reference/#field-work-checklists-forms-time-notes-change-orders-subcontractors) |

## When to use it

Keep checklist templates (checklists.saveTemplate) and put a checklist on a job or on one visit (checklists.create). Required items gate done: visits.done refuses a visit with open required items or a missing sign-off, and jobs.complete refuses a job while its own checklists, or those of visits not yet done, are open.

## What to tell the owner

Say what you did in plain words and what happens next.

## Input

| Field | Type | Required |
|---|---|---|
| `checklist_id` | string (uuid) | yes |
| `items` | array | yes |
| `items[].label` | string | yes |
| `items[].required` | boolean | no |

## Example

```http
POST https://doingwork.work/v1/checklists/items
content-type: application/json
Idempotency-Key: 3f1c...

{
  "checklist_id": "00000000-0000-4000-8000-000000000000",
  "items": [
    {
      "label": "..."
    }
  ]
}
```

## Output

JSON. The response shape isn't published yet; read the fields you need and ignore the rest. Errors are `{code, message, status}`.

## Errors

| Code | Status | What to do |
|---|---|---|
| `invalid_input`, `invalid_token`, `rate_limited` |  | Can happen on any call. See [errors](https://doingwork.work/docs/errors/). |