> For the complete documentation index, see [llms.txt](https://devguide.koppeltaal.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://devguide.koppeltaal.nl/technische-howto/launchen/hti-launch-versturen.md).
# Initiating a launch
The launch can be initiated via a `
```
## Launch
`POST` `{{ActivityDefinition.endpoint}}/`
This request initializes the launch.
#### Headers
| Name | Type | Description |
| ---------------------------------------------- | ------ | ----------------------------------- |
| Content-Type\* | String | `application/x-www-form-urlencoded` |
#### Request Body
| Name | Type | Description |
| ---------------------------------------- | ------ | --------------------------------------------------------------- |
| launch\* | String | [Signed JWT](/technische-howto/launchen/launch-samenstellen.md) |
| iss\* | String | The URL of the Koppeltaal server |
## Topics
[TOP-KT-007 - Koppeltaal Launch](https://vzvz.atlassian.net/wiki/spaces/KTSA/pages/27123510/TOP-KT-007+-+Koppeltaal+Launch)