# Sinjapp Business

> Tenant API documentation for Sinjapp Business messaging, sender numbers, contacts, usage, and MCP access.

## Docs

- [Account Verification](https://docs.sinjapp.org/account-verification.md): Understand sender number ownership and Sinjapp account verification.
- [Create an API key](https://docs.sinjapp.org/api-reference/api-keys/create-an-api-key.md)
- [Revoke an API key](https://docs.sinjapp.org/api-reference/api-keys/revoke-an-api-key.md)
- [Current tenant context](https://docs.sinjapp.org/api-reference/auth/current-tenant-context.md)
- [Check whether a phone can receive messages](https://docs.sinjapp.org/api-reference/contacts/check-whether-a-phone-can-receive-messages.md)
- [List message logs](https://docs.sinjapp.org/api-reference/messages/list-message-logs.md)
- [Send a message](https://docs.sinjapp.org/api-reference/messages/send-a-message.md)
- [List sender numbers](https://docs.sinjapp.org/api-reference/sender-numbers/list-sender-numbers.md)
- [Register a sender number](https://docs.sinjapp.org/api-reference/sender-numbers/register-a-sender-number.md)
- [Current tenant subscription](https://docs.sinjapp.org/api-reference/subscription/current-tenant-subscription.md): Returns the tenant plan, limits, and usage snapshot. Payment and plan changes happen inside the tenant dashboard.
- [Read usage counters](https://docs.sinjapp.org/api-reference/usage/read-usage-counters.md)
- [Authentication](https://docs.sinjapp.org/authentication.md): Authenticate tenant API requests with an API key.
- [Code Examples](https://docs.sinjapp.org/code-examples.md): Copy-ready examples for cURL, JavaScript, PHP, and Python.
- [Contacts Lookup](https://docs.sinjapp.org/contacts-lookup.md): Check whether a phone number can receive Sinjapp Business messages.
- [Errors](https://docs.sinjapp.org/errors.md): Common Tenant API errors and how to resolve them.
- [Sinjapp Business API](https://docs.sinjapp.org/introduction.md): Connect your tenant workspace to Sinjapp messaging with verified sender numbers and tenant API keys.
- [MCP Setup](https://docs.sinjapp.org/mcp-setup.md): Connect Sinjapp Business documentation to AI tools through the hosted MCP server.
- [Messaging](https://docs.sinjapp.org/messaging.md): Send messages and read tenant message logs.
- [Postman Collection](https://docs.sinjapp.org/postman-collection.md): Download the official Sinjapp Business Postman collection.
- [Quickstart](https://docs.sinjapp.org/quickstart.md): Send your first message from a tenant workspace.
- [Scalar](https://docs.sinjapp.org/scalar.md): Open the interactive Scalar reference built from the same OpenAPI file.
- [Sender Numbers](https://docs.sinjapp.org/sender-numbers.md): Add, verify, and use tenant sender numbers.
- [Usage](https://docs.sinjapp.org/usage.md): Read tenant usage counters and limits.

## OpenAPI Specs

- [sinjapp-business.v1](https://docs.sinjapp.org/openapi/sinjapp-business.v1.yaml)
- [tgo-business.v1](https://docs.sinjapp.org/openapi/tgo-business.v1.yaml)