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Send Message API

อัพเดทล่าสุด :2023-03-09

Use the Messaging API to integrate WhatsApp's messaging capabilities into your business systems.
Before calling the API, log on to the console API key create a key on the page.

Call address

POST https://wa.api.engagelab.cc/v1/messages

Call validation

The EngageLab REST API uses HTTP Basic Authentication as the authentication method, adding Authorization in the HTTP Header.

Authorization: Basic ${base64_auth_string}
          Authorization: Basic ${base64_auth_string}

        
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The preceding base64_auth_string generation algorithm is as follows: base64(dev_key:dev_secret)

  • the Header name is "Authorization" and the value is a base64-converted "username:password" pair (with a colon in the middle).
  • In WhatsApp API scenario, username is DevKey and password is DevSecret. In the console, choose configuration management- API key obtain the page.

Sample Requests

Request Header

POST /v1/messages HTTP/1.1 Content-Type: application/json Authorization: Basic amlndWFuZ2RldjpkZXZfc2VjcmV0
          POST /v1/messages  HTTP/1.1 
Content-Type: application/json  
Authorization: Basic amlndWFuZ2RldjpkZXZfc2VjcmV0

        
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Request body

{ "from": "+8613800138000", "to": [ "00447911123456" ], "body": { "type": "template", "template": { "name": "code", "language": "zh_CN", "components": [ { "type": "body", "parameters": [ { "type": "text", "text": "12345" } ] } ] } }, "request_id": "123asdbbqwe9faweg", "custom_args": { "arg1": "string val", "arg2": 123 } }
          {
    "from": "+8613800138000",
    "to": [
        "00447911123456"
    ],
    "body": {
        "type": "template",
        "template": {
            "name": "code",
            "language": "zh_CN",
            "components": [
                {
                    "type": "body",
                    "parameters": [
                        {
                            "type": "text",
                            "text": "12345"
                        }
                    ]
                }
            ]
        }
    },
    "request_id": "123asdbbqwe9faweg",
    "custom_args": {
        "arg1": "string val",
        "arg2": 123
    }
}

        
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Request parameters

A request object is expressed in JSON format, so the request header must contain Content-Type: application/json.

Parameter Type Option Description
from String optional sending number
to String Array required the phone number of the target.
body JSON Object required message body
request_id String optional the ID of the custom request that identifies the request.
custom_args JSON Object optional the custom information is returned to the developer in the message status callback.

from

Parameter Type Option Description
from String optional
  • the sending number, that is, the enterprise phone number used to send messages.
  • You need to add the international area code. If you do not specify it, use the default sending number (required configure in the console )
  • to

    Parameter Type Option Description
    to String Array required the WhatsApp phone number of the target, and the international area code must be added.

    body

    A message body that contains the following fields:

    Parameter Type Option Description
    type string required the message type. Valid values:
  • template: template Message
  • text: text message
  • image: image message
  • audio: audio message
  • video: a video message.
  • document: document message
  • sticker: sticker message
    only template messages can be sent to users., other types of messages require users to reply to messages within 24 hours before they can be delivered.
    Images, audio, video, documents, and stickers are all media messages. Media Message Format requirements
  • template template object optional used when type = template. For more information, see template object description
    text text object optional used when type = text. For more information, see text object description
    image image object optional used when type = image. For more information, see image object description
    audio audio object optional used when type = audio. For more information, see audio object description
    video video object optional used when type = video. For more information, see video object description
    document document object optional Used when type = document. For more information, see document object description
    sticker sticker object optional used when type = sticker. For more information, see sticker object description

    text object description

    text message

    Parameter Type Option Description
    body String required the text content. The WhatsApp must be no more than 4096 characters/character.

    Example

    { "from": "8613800138000", //sender's phone number "to": "8613800138000", //the recipient's phone number "body": { "type": "text", //type of message "text": { "body": "your-text-message-content" // message content } } }
              {
        "from": "8613800138000", //sender's phone number
        "to": "8613800138000", //the recipient's phone number
        "body": {
            "type": "text", //type of message
            "text": {
                "body": "your-text-message-content" // message content
            }
        }
    }
    
            
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    image object description

    image message

    Parameter Type Option Description
    id String optional the id and link generated by the WhatsApp must have a value.
    link String optional image link, http/https link, follow media Message Format requirements
    caption String optional the description of the image. It cannot exceed 1024 characters in length.

    Example

    { "from": "8613800138000",//the sender's phone number "to": "8613800138000",//receiver's phone number "body": { "type": "image",//the message type "image": { "link": "https://img.jiguang.cn/jiguang/public/img/c866bd2.png", //image link "caption": "caption info" // optional, text description below the image, within 1024 characters } } }
              {
      "from": "8613800138000",//the sender's phone number
      "to": "8613800138000",//receiver's phone number
        "body": {			
                "type": "image",//the message type
                "image": {
                    "link": "https://img.jiguang.cn/jiguang/public/img/c866bd2.png", //image link
            "caption": "caption info" // optional, text description below the image, within 1024 characters
                }
        }
    }
    
            
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    video object description

    video message

    Parameter Type Option Description
    id String optional WhatsApp generated media_id; Both id and link must have a value.
    link String optional video link, http/https link, follow media Message Format requirements
    caption String optional Description of the video , up to 1024 characters in length.

    Example

    { "from": "8613800138000",//the sender's phone number "to": "8613800138001", //the recipient's phone number "body": { "type": "video",//the message type "video": { "link": "https://img.jiguang.cn/jiguang/public/videos/432acc5.mp4", //video link "caption": "caption info" // optional, text description below the video, within 1024 characters } } }
              {
      "from": "8613800138000",//the sender's phone number
      "to": "8613800138001", //the recipient's phone number
        "body": {			
                "type": "video",//the message type
                "video": {
                    "link": "https://img.jiguang.cn/jiguang/public/videos/432acc5.mp4", //video link
            "caption": "caption info" // optional, text description below the video, within 1024 characters
                }
        }
    }
    
            
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    audio object description

    audio message

    Parameter Type Option Description
    id String optional WhatsApp generated media_id; Both id and link must have a value.
    link String optional audio link, http/https link, follow media Message Format requirements

    Example

    { "from": "8613800138000",//the sender's phone number "to": "8613800138001", //the recipient's phone number "body": { "type": "audio",//the message type "audio": { "link": "https://file-examples.com/storage/fe5947fd2362fc197a3c2df/2017/11/file_example_MP3_700KB.mp3" //audio link } } }
              {
      "from": "8613800138000",//the sender's phone number
      "to": "8613800138001", //the recipient's phone number
        "body": {
                "type": "audio",//the message type
                "audio": {
                    "link": "https://file-examples.com/storage/fe5947fd2362fc197a3c2df/2017/11/file_example_MP3_700KB.mp3" //audio link
                }
        }
    }
    
            
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    document object description

    file message

    Parameter Type Option Description
    id String optional WhatsApp generated media_id; Both id and link must have a value.
    link String optional document link, http/https link, follow media Message Format requirements
    caption String optional Description of the file , up to 1024 characters in length.
    filename String optional The name of the file. If the filename field is not filled in but the caption field is filled in, the caption will be used as the file name; if filename is filled in, the value of filename will be used as the file name.

    Example

    { "from": "8613800138000",//the sender's phone number "to": "8613800138001", //the recipient's phone number "body": { "type": "document",//the message type "document": { "link": "https://img.jiguang.cn/jiguang/public/videos/432acc5.mp4", // document link "caption": "caption info", // optionally, the text description at the bottom of the document, within 1024 characters "filename": "document file name" // optional, the name of the file } } }
              {
      "from": "8613800138000",//the sender's phone number
      "to": "8613800138001", //the recipient's phone number
        "body": {
                "type": "document",//the message type
                "document": {
                    "link": "https://img.jiguang.cn/jiguang/public/videos/432acc5.mp4", // document link
            "caption": "caption info", // optionally, the text description at the bottom of the document, within 1024 characters
            "filename": "document file name" // optional, the name of the file
                }
        }
    }
    
            
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    sticker object description

    Sticker message

    Parameter Type Option Description
    id String optional media_id on the whatsapp side; Both id and link must have a value.
    link String optional sticker link, http/https link, follow media Message Format requirements

    Example

    { "from": "8613800138000",//the sender's phone number "to": "8613800138001", //the recipient's phone number "body": { "type": "sticker",//the message type "sticker": { "link": "http://sample-file.bazadanni.com/download/images/webp/sample.webp" //sticker link } } }
              {
      "from": "8613800138000",//the sender's phone number
      "to": "8613800138001", //the recipient's phone number
        "body": {
                "type": "sticker",//the message type
                "sticker": {
                    "link": "http://sample-file.bazadanni.com/download/images/webp/sample.webp" //sticker link
                }
        }
    }
    
            
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    template object description

    template message, you need to create a template first, you can console operations or create an API .

    Parameter Type Type Description
    name String required the name of the template. You can find it on the message templates page in the console. Only lowercase numbers and underscores are supported.
    language String required template language code . When creating a template, you can set the content of the same template name in multiple languages. Therefore, you need to use the name and language fields to determine the selected template.
    components components-object array optional if a variable exists in the template, you need to fill this field. Only one components object element is set in the array.
    template.components object description
    Parameter Type Option Description
    type String required the template component. Which component in the template contains variables, you need to pass the value to the component. Valid values:
  • header: header
  • body: body
  • footer: footer
  • button: button
  • parameters parameters object required set variable content
    template.components.parameters object description
    Parameter Type Option Description
    type string required the type of the variable. Valid values: text, currency, date_time, image, video, and document. Multimedia material types (image, video, and document) only exist in the header. For more information about the supported formats, see media Message Format requirements .
    text string optional When type = text, it is the specific content of the variable.
    date_time localizable object optional Used when type = date_time, the difference with text is that it can be localized and adapted to display
    currency localizable object optional used when type = currency, the difference with text is that it can be localized and adapted to display
    image image object optional used when type = image, and image object the content format is consistent.
    video video object optional Used when type = video, and video object the content format is consistent.
    document document object optional Used when type = document, and document object the content format is consistent.

    Example

    { "from": "+8613800138000", "to": [ "00447911123456" ], "body": { "type": "template", "template": { "name": "your-template-name", "language": "zh_CN", "components": [ { "type" : "header", "parameters": [{ "type": "document", "document": { "link": "http(s)://the-url", "filename": "your-document-filename" } }] }, { "type": "body", "parameters": [ { "type": "text", "text": "your-text-string" }, { "type": "currency", "currency": { "fallback_value": "$100.99", "code": "USD", "amount_1000": 100990 } }, { "type": "date_time", "date_time": { "fallback_value": "February 25, 1977", "day_of_week": 5, "day_of_month": 25, "year": 1977, "month": 2, "hour": 15, "minute": 33 } }, { "type": "date_time", "date_time": { "fallback_value": "February 25, 1977", "timestamp": 1485470276 } } ] } ] } } }
              {
        "from": "+8613800138000",
        "to": [
            "00447911123456"
        ],
        "body": {
            "type": "template",
            "template": {          
                "name": "your-template-name",
                            "language": "zh_CN",
                "components": [
                  {
                    "type" : "header",
                    "parameters": [{
                             "type": "document",
                             "document": {
                                 "link": "http(s)://the-url",
                                 "filename": "your-document-filename"
                           }
                    }]
                  },
                  {
                     "type": "body",
                     "parameters": [
                            {
                                "type": "text",
                                "text": "your-text-string"
                            },
                            {
                                "type": "currency",
                                "currency": {
                                    "fallback_value": "$100.99",
                                    "code": "USD",
                                    "amount_1000": 100990
                                }
                            },
                            {
                                "type": "date_time",
                                "date_time": {
                                    "fallback_value": "February 25, 1977",
                                    "day_of_week": 5,
                                    "day_of_month": 25,
                                    "year": 1977,
                                    "month": 2,
                                    "hour": 15,
                                    "minute": 33
                                }
                            },
                            {
                                "type": "date_time",
                                "date_time": {
                                    "fallback_value": "February 25, 1977",
                                    "timestamp": 1485470276
                                }
                            }
                        ]
                    }
                ]
            }
        }
    }
    
            
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    Response parameters

    Success response

    Field Type Option Description
    message_id String required the ID of the EngageLab WhatsApp message that uniquely identifies a message.
    request_id String optional the custom ID submitted during the request. The ID is returned as it is when the request is received.
    { "message_id": "cbggf4if6o9ukqaalfug", "request_id": "your-sendno-string" }
              {
        "message_id": "cbggf4if6o9ukqaalfug",
        "request_id": "your-sendno-string"
    }
    
            
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    Failed response

    the http status code is 4xx or 5xx. The response body contains the following fields:

    Field Type Option Description
    code int required the error code. For more information, see error Codes description
    message String required error details
    { "code": 3002, "message": "whatsapp.template field must be set correctly when type is template" }
              {
        "code": 3002,
        "message": "whatsapp.template field must be set correctly when type is template"
    }
    
            
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    Error Codes

    Error Codes Http Code Description
    1000 500 internal error
    2001 401 EngageLab authentication failed without a valid token.
    2002 401 EngageLab-side authentication failed. The token has expired or has been disabled.
    2003 400 WhatsApp authentication failed, please contact EngageLab customer service
    2004 403 you do not have the permission to call this API. Check whether you have the permission to send messages (a sending number) to this API key.
    3001 400 The request parameter format is invalid. Check whether the JSON format is used.
    3002 400 The request parameters are incorrect. Check whether the request parameters meet the requirements.
    3003 400 The error message returned because the request parameter is invalid. For more information, see the error description of the message field.
    4001 400 The relevant resource does not exist. For example, a template that does not exist is used when the template message is sent.

    Comments

    media Message Format requirements

    Media Type Supported format types Content-Type Size Limit
    image image/jpeg, image/png, does not support transparent background 5MB
    video video/mp4 , video/3gpp
    note: encoding only supports H.264 video encoding and AAC audio encoding.
    16MB
    audio audio/aac, audio/mp4, audio/amr, audio/mpeg
    audio/ogg; codecs = opus (note: basic audio/ogg is not supported, only audio/ogg is supported; codecs = opus)
    16MB
    document 1. Any MIME-type type is supported when sending file messages.
    2. When sending a template message, the file in the header only supports PDF format.
    100MB
    sticker image/webp Static stickers:100KB

    Animated stickers: 500KB

    Language code

    for more information about the relationship between the language and the corresponding code, download this file:
    Template language code.xlsx

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