> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sinjapp.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Sinjapp Business API

> Connect your tenant workspace to Sinjapp Business messaging with verified sender numbers, tenant API keys, and per-tenant subdomains.

Sinjapp Business lets a tenant customer manage their own workspace, subscription, payment, sender numbers, API keys, and messaging operations from the tenant dashboard.

These docs are for tenant customers only. They describe the Tenant API used for messaging operations.

## What You Can Do

* Open your tenant workspace.
* Manage subscription and payment inside the tenant dashboard.
* Add a sender number from the tenant dashboard.
* Verify sender number ownership with an OTP delivered inside Sinjapp.
* Create a tenant API key.
* Send messages and read usage through the Tenant API.

## Postman Collection

Use the official Postman collection to test the Tenant API without building requests by hand.

<Card title="Download Postman Collection" href="/postman/sinjapp-business-api.postman_collection.json">
  Import the collection into Postman, then set `tenant_base_url` and `tenant_api_key`.
</Card>

## Base URL

```text theme={null}
Tenant API: https://{tenant}.sinjapp.org/api/v1
```

Use your own tenant domain. For example:

```text theme={null}
https://{tenant}.sinjapp.org/api/v1
```

The tenant domain must match the workspace domain shown in the dashboard exactly. A typo in the subdomain, such as using a different tenant name, returns `404 Tenant could not be identified for this domain.`

<Note>
  Subscription and payment are managed inside the tenant dashboard. They are not exposed as public API flows in these customer docs.
</Note>

## Interactive Reference

* Mintlify renders the guide and OpenAPI reference.
* The `Scalar` page links to the deployed API reference and the shared OpenAPI file.