Client Actions are specially formatted strings that are sent under the client_action field in CardKit buttons. They allow a button to perform special actions within the Blink app.

Below is a list of available client actions.

Open Webview

blink:webview?

This client action causes a webview to open allowing the user to view a webpage without leaving the Blink app.

Field	Description	Required
url	URL encoded Base64 Encoded URL	Yes
action	`open`	Yes
id	Used to prevent opening multiple webviews with the same id on the Desktop app.	No

Example
This example opens the timeline microapp.

blink:webview?url=aHR0cHM6Ly9jb250ZW50LmpvaW5ibGluay5jb20vIy90aW1lbGluZQ%3D%3D&action=open&id=timeline

Open Link

blink:link?

This client action opens a link in an external web browser.

Field	Description	Required
url	URL encoded Base64 Encoded URL	Yes
action	`open`	Yes

Example
This example opens the Blink website.

blink:link?url=aHR0cHM6Ly9qb2luYmxpbmsuY29tLw==&action=open

Send HTTP POST Request

blink:post?

This client action allows you to send a post request to the connector proxy url for your integration. It is a powerful client action as it allows buttons on cards to perform arbitrary actions in your integration.

Field	Description	Required
url	URL encoded Base64 Encoded URL. This is just the path and will be prefixed by the app with `https://api.joinblink.com`. For example to forward a request to your integration code at `/perform-action` for your integration with id `l- b2d471a5-5c7a-4268-bf61-708a48c60819`, you would send the string `/connector/l- b2d471a5-5c7a-4268-bf61-708a48c60819/perform-action` base64 encoded as the value for url in this client action.	Yes
body	URL encoded Base64 Encoded JSON body.	Yes If you don't need to send a body just send `e30%3D` which when url decoded and then base64 decoded is an empty JSON object `{}`

Example
This example posts the JSON {"test":"body"} to https://api.joinblink.com/connector/l-a26dab83-33a1-459b-adab-8333a1259b7d/test

blink:post?url=L2Nvbm5lY3Rvci9sLWEyNmRhYjgzLTMzYTEtNDU5Yi1hZGFiLTgzMzNhMTI1OWI3ZC90ZXN0=&body=eyJ0ZXN0IjoiYm9keSJ9