WATI uses conventional HTTP response codes to indicate the success or failure of an API request. In general: Codes in the 2xx range indicate success. Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, a charge failed, etc.). Codes in the 5xx range indicate an error with WATI servers (these are rare).

HTTP Code

Description

200

Everything worked as expected.

401

No valid API key provided.

403

The API key doesn't have permissions to perform the request.

404

The requested resource doesn't exist.

500

Something went wrong on WATI's end. (These are rare.)

If you call certain endpoints too frequently, you may run into the rate limit or see the error 429. Below are some rate limits that you may face, depending on your use case.

Endpoint

Rate

Note

/addContact

10 / 10sec

You don't have to add contacts before sending your first message to the contact, WATI will add the contact to your account automatically if it's a new contact.

/getMessages

10 / 10sec

We recommend using the webhook to receive incoming messages instead of retrieving via this endpoint

/sendTemplateMessage

50 / 10sec

If you are sending the same template to multiple contact at once, we recommend using /sendTemplateMessages instead. You can add up to 1000 contacts in 1 call.