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# Create task

> A task with a due date, work type and optional deal, assignee and customer. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/teamleader/create_task

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

A task with a due date, work type and optional deal, assignee and customer.

Teamleader API: https://cotlet.dev/docs/api/teamleader.md

`POST https://cotlet.dev/api/v1/teamleader/work-types/{work_type_id}/tasks`

Access: write.

Creates a task. A title, a due date and a work type are required, because Teamleader asks for a work type on every task. Link it to a deal or a customer and assign it to a user. It is the same task you would add from a deal. It sends no email to a customer and is deleted in Teamleader if it is wrong, so it does not wait for your OK.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `title` | string | yes | Task title. |
| `due_on` | date | yes | Due date, YYYY-MM-DD. |
| `work_type_id` | string | yes | Work type ID. Work types are set under Settings > Calendar > Work types. |
| `description` | string | no | Longer text for the task. |
| `deal_id` | string | no | Link the task to this deal. |
| `customer_id` | string | no | Link the task to this company. |
| `assignee_user_id` | string | no | User who gets the task. Default: unassigned. |

## Request

**cURL**

```bash
curl -X POST https://cotlet.dev/api/v1/teamleader/work-types/6b0f5d1e-2c43-4a7e-9f10-3d58a1c2e7b4/tasks \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"title":"Call Northwind Studio about the website quotation","due_on":"2026-10-23","deal_id":"9c1f3a5e-7b24-4d68-8e0a-5f2b4c6d8e10"}'
```

**Python**

```python
result = client.call("teamleader", "create_task", {"title":"Call Northwind Studio about the website quotation","due_on":"2026-10-23","work_type_id":"6b0f5d1e-2c43-4a7e-9f10-3d58a1c2e7b4","deal_id":"9c1f3a5e-7b24-4d68-8e0a-5f2b4c6d8e10"})
```

**Node.js**

```js
const result = await cotlet.call('teamleader', 'create_task', {"title":"Call Northwind Studio about the website quotation","due_on":"2026-10-23","work_type_id":"6b0f5d1e-2c43-4a7e-9f10-3d58a1c2e7b4","deal_id":"9c1f3a5e-7b24-4d68-8e0a-5f2b4c6d8e10"});
```

**CLI**

```bash
cotlet call teamleader create_task --data '{"title":"Call Northwind Studio about the website quotation","due_on":"2026-10-23","work_type_id":"6b0f5d1e-2c43-4a7e-9f10-3d58a1c2e7b4","deal_id":"9c1f3a5e-7b24-4d68-8e0a-5f2b4c6d8e10"}'
```

## Example response

```json
{
  "task_id": "1759dfc1-7365-4f1b-8d90-d29787a5d29d",
  "title": "Call Northwind Studio about the website quotation",
  "due_on": "2026-10-23",
  "deal_id": "9c1f3a5e-7b24-4d68-8e0a-5f2b4c6d8e10",
  "assignee": "Lotte Peeters"
}
```

Previous: [Add note](https://cotlet.dev/docs/api/teamleader/add_note.md)
Next: [Move deal](https://cotlet.dev/docs/api/teamleader/move_deal.md)

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Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.