Push API Key
By default, the push data API is open to public. By turning on the push API key, only authorized key has the permission to push data to a card.
To turn on the push api key, go to "settings" on top-right corner and set dashboard to private.
To push data with API key, add x-api-key: APIKEY to the HTTP headers. For example,
curl \
--request POST 'http://app.pushboard.io/api/carddata/g540urp8r1/' \
--header 'Content-Type: application/json' \
--header 'x-api-key: TESTAPIKEY' \
--data-raw \
'{ "x__index": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
"y1__points": [13, 4, 9, 13, 6, 9, 7, 15, 9, 10, 11]
}'