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Positus Architecture - WhatsApp Business API

You can integrate directly with the Positus API (above) or use a customer service platform such as Robbu’s Invenio, without building the integration yourself.
Production Token: Your token will be generated and provided by Positus; it grants access to all of your WhatsApp Business API numbers. The key will be provided after activation of each WhatsApp Business API number.Sandbox - Development Token: You can generate your token directly through http://studio.posit.us/.

Postman file

The Postman is a tool whose purpose is to test RESTful services (Web APIs) by sending HTTP requests and analyzing their responses. Download Postman App

Production API

Positus API (2026).postman_collection.json

Development API (Sandbox)

Positus API Sandbox (2026).postman_collection.json

messages

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Use this route to send text messages via WhatsApp

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Recipient: phone (to) or BSUID (recipient)

Every message-sending route accepts two ways to identify the recipient. Use one OR the other:
The BSUID is a user identifier scoped to the business portfolio, delivered in the user_id field of webhooks. It is useful when the user has adopted a username and the phone number (wa_id) may not be present in the payload. Learn the concept in BSUID and user identifiers.
Precedence when to and recipient coexist: if you send both fields in the same request, the phone number (to) takes precedence — the message is delivered to the phone. Therefore, send only one of them: either to (phone) or recipient (BSUID/parent BSUID).
On-premises numbers accept only to (phone). Sending via recipient (BSUID) is available only for numbers on the Cloud API (Meta).

Request Body (sending to a BSUID)

Response (sending to a BSUID)

The response is the same as other sends, but the contacts block — forwarded from Meta — carries the identifier you used in input, along with the phone number (wa_id, when available) and the BSUID (user_id).
Special cases that require a phone number (BSUID not accepted): authentication templates of the one-tap, zero-tap and copy-code types. In these cases, always provide to (phone). If you send a BSUID where it is not supported, Meta responds with error 131062.

Typing indicator

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages/typing-indicator Displays the “typing…” indicator to the customer and marks the received message as read. Provide the message_id of the message sent by the customer. The indicator is automatically dismissed after about 25 seconds or as soon as you reply.

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HSM

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Use this route to send notification messages via WhatsApp HSM - These are message templates pre-approved by Facebook; they can be text, media, or file messages.
The recipient can be provided by phone (to) or by BSUID (recipient), as described in Recipient: phone (to) or BSUID (recipient). Exception: authentication templates of the one-tap, zero-tap and copy-code types require the phone (to) and do not accept BSUID.

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Contact

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share contacts

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Location

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share locations

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Image

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share images

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Document

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share documents

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Video

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share videos

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Audio

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share audios

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Sticker

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Share stickers. The sticker format must be exactly 512x512

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Download Media

GET https://api.positus.global/v2/whatsapp/numbers/{{chave}}/media/{{messages.type.id}} Download the media files. Use the media id received in the webhook notification.

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Returns the binary content of the media, with the Content-Type header matching the file type (e.g., image/jpeg, audio/ogg, application/pdf).

Interactive Messages - List

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages List Messages: Messages including a menu of up to 10 options. This type of message offers a simpler and more consistent way for users to make a selection when interacting with a business. List or reply button messages cannot be used as notifications. Currently, they can only be sent within 24 hours of the last message sent by the user. If you try to send a message outside the 24-hour window, you will receive an error message.

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Interactive Messages - Buttons

POST https://api.positus.global/v2/whatsapp/numbers/{{chave}}/messages Reply buttons: Messages including up to 3 options — each option is a button. This type of message offers a faster way for users to make a selection from a menu when interacting with a business. Reply buttons provide the same user experience as interactive templates with buttons. List or reply button messages cannot be used as notifications. Currently, they can only be sent within 24 hours of the last message sent by the user. If you try to send a message outside the 24-hour window, you will receive an error message.

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