https://textbelt.com/textendpoint accepts a POST request with the following parameters:
textbeltto send a free message).
/textendpoint will respond with JSON:
_test" to your key and you will receive a response from the
/textendpoint confirming that a text would send. However, credit will not be deducted from your account.
replyWebhookUrlparameter to your send message request. This is the same as the examples above, except it includes replyWebhookUrl. For example:
application/jsonencoded. Your server must interpret it like any other HTTP POST request with a JSON payload. The JSON payload contains the following:
X-textbelt-signature, which is an HMAC that authenticates the JSON payload using a SHA-256 hash function.
X-textbelt-timestampcontains a UNIX timestamp (in seconds). You should ensure that this timestamp is not more than 15 minutes out of date.