API reference - ThinnestAI

This API exists for the messages a system sends: an order confirmation, a delivery update, a one-time password. One customer, one event, right now. It is not the campaigns API, and the difference is not cosmetic.

	Broadcasts	This API
Triggered by	A person, in the console	Your code, on an event
Audience	A list computed from consent	One customer
Typical category	Marketing	Utility or authentication
Reaches an opted-out contact	No	Yes, for utility and authentication

If you find yourself looping this endpoint over a list of customers, you want broadcasts instead.

Base URL

https://app.thinnest.ai/api/v1

Endpoints

Method	Path	What
`POST`	`/messages`	Send a template to one customer
`POST`	`/events`	Report an event, which can enrol a contact in a sequence
`POST`	`/sequences/{sequenceId}/enrolments`	Enrol a contact directly

What it will not do

Send an unapproved template. Meta refuses it, so we refuse it earlier and with a clearer message.
Send marketing to somebody who opted out. Refused with 409. Utility and authentication still reach them, and must.
Send free-form text. Outside the 24-hour window WhatsApp carries only approved templates. Inside it, the conversation belongs to the agent and the inbox.

Start here

Authentication

Creating a key, and where it must not go.

Send a message

The one endpoint most integrations need.