AI assistant
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Point it at your website and get an AI assistant that answers your customers on WhatsApp, Instagram, Telegram or your website chat.
Developer API
WhatsApp Template API
Send approved WhatsApp templates from your own systems with one API call; the conversation then continues in MonoChat.
New to MonoChat? This creates your account and workspace and installs WhatsApp Template API for you. Already have an account? Sign in and the app page opens so you can install it.
- REST API
- API only
WhatsApp Template API
By MonoChat, an official Meta Business Partner
Free to install
What WhatsApp Template API does
WhatsApp Template API lets your CRM, ERP, e-commerce site or any backend send an approved WhatsApp template message to a customer through MonoChat. One request names the WhatsApp number to send from, the customer’s phone number, the template and its variables.
When the customer replies, the conversation lands in your MonoChat inbox like any other. The app has no screens of its own: everything happens through three API endpoints.
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One API call
Send a template by name and language, with header, body, button and carousel variables filled from your data.
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Straight to the chat
Every send returns the conversation’s id and a direct link to it in MonoChat.
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New customers welcome
If the phone number is not a customer yet, the customer is created with the name you send.
What the API does
REST endpoints, called from your own systems.
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List templates
The approved templates of a WhatsApp number, with their language, category, status and variables, so your system knows what it can send.
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Send a template
By template name and language, with header, body, button and carousel variables. A missing value stops the send, so nothing half-filled reaches the customer.
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Assign to an agent
Give an agent’s email and the conversation is opened on their name.
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Media headers
Get short-lived upload credentials, put an image, video or document on MonoChat’s storage and use its URL as the template’s header.
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Conversation link
Each send returns the session id, message id and a link that opens the conversation in MonoChat.
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Clear errors
A failed call says what went wrong, for example “Channel not found” or “Variable missing”.
See WhatsApp Template API
How to get started
From a connected number to your first template sent from your own system.
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Connect WhatsApp
Your WhatsApp Business number is connected to MonoChat and verified, with templates approved by Meta.
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Install and get a token
Install the app and create an API token under Profile › API Tokens.
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List your templates
Call template/list.js to see your approved templates and their variables.
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Send your first template
Call template/send.js with the customer’s number and the variable values.
- Each message is billed like any template message sent from MonoChat.
- Media URLs must stay reachable until WhatsApp has fetched the file.
- Send to customers who agreed to hear from you: WhatsApp can limit numbers whose messages are blocked or reported.
WhatsApp bulk messaging cost calculator
Install free
New to MonoChat? This creates your account and workspace and installs WhatsApp Template API for you. Already have an account? Sign in and the app page opens so you can install it.
FAQ
WhatsApp Template API: FAQ
Straight answers before you install.
Does WhatsApp Template API have a user interface?
No. It is an API-only app with three endpoints: list templates, send a template and get upload credentials for media headers.
What do I need before I can use it?
A WhatsApp Business number connected to MonoChat and verified, templates approved by Meta, and an API token from Profile › API Tokens.
What happens when the customer replies?
The conversation lands in your MonoChat inbox like any other. Each send also returns a direct link to the conversation, and you can assign it to an agent by email.
Can I send to a number that is not a customer yet?
Yes. If the phone number is not a customer yet, the customer is created with the name you send.
What do template messages cost?
Each message is billed like any template message sent from MonoChat. Meta prices templates by category and the recipient’s country; use the WhatsApp bulk messaging cost calculator to estimate a send.
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Developer API
Session Link
Get a direct link to a customer’s conversation from your own systems; the customer and the conversation are created if they do not exist yet.
Reports
Ads Referral Report
See which ads and posts bring you messages: every chat started from a click-to-WhatsApp or Instagram ad, by ad, day and channel.
Start automating today
Install WhatsApp Template API in minutes
Install it free from this page. New to MonoChat? Your account and workspace are created for you.
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