# Supertone API Documentation

> Empowering Voices, Simplifying AI Integration

## Docs

- [Authentication](https://docs.supertoneapi.com/en/api-reference/authentication.md): Supertone API uses API Key-based authentication. All requests must be authenticated by including the issued API Key in the header.
- [Create cloned voice](https://docs.supertoneapi.com/en/api-reference/endpoints/create-cloned-voice.md): **Creates a customer registered voice by registering the cloned voice when an audio file is uploaded.**
- [Delete custom voice](https://docs.supertoneapi.com/en/api-reference/endpoints/delete-custom-voice.md): **Delete customer registered voice.**
- [Edit custom voice](https://docs.supertoneapi.com/en/api-reference/endpoints/edit-custom-voice.md): **Edits the name or description of the customer registered voice.**
- [Get credit balance](https://docs.supertoneapi.com/en/api-reference/endpoints/get-credit-balance.md): **Returns the available credit balance of the current account.**
- [Get custom voice](https://docs.supertoneapi.com/en/api-reference/endpoints/get-custom-voice.md): **Retrieves information about a specific customer registered voice.**
- [Get usage](https://docs.supertoneapi.com/en/api-reference/endpoints/get-usage.md): **Returns usage history by period.**
- [Get voice](https://docs.supertoneapi.com/en/api-reference/endpoints/get-voice.md): **Retrieves information about a specific Supertone provided voice.**
- [Get voice usage](https://docs.supertoneapi.com/en/api-reference/endpoints/get-voice-usage.md): **Returns voice usage history by period.**
- [List custom voices](https://docs.supertoneapi.com/en/api-reference/endpoints/list-custom-voices.md): **Gets a list of all voices registered by the customer.**
- [List voices](https://docs.supertoneapi.com/en/api-reference/endpoints/list-voices.md): **Gets a list of all available voices provided by Supertone.**
- [Predict duration](https://docs.supertoneapi.com/en/api-reference/endpoints/predict-duration.md): **Returns the expected length of the converted speech given text input.**
- [Search custom voices](https://docs.supertoneapi.com/en/api-reference/endpoints/search-custom-voices.md): **Searches and retrieves voices registered by the customer based on specified criteria.**
- [Search voices](https://docs.supertoneapi.com/en/api-reference/endpoints/search-voices.md): **Searches and retrieves voices provided by Supertone based on specified criteria.**
- [Stream speech](https://docs.supertoneapi.com/en/api-reference/endpoints/stream-text-to-speech.md): **Converts text into speech using a voice of your choice and configurable voice settings, and returns the output as an audio stream.**
- [Create speech](https://docs.supertoneapi.com/en/api-reference/endpoints/text-to-speech.md): **Converts text into speech using a voice of your choice, with configurable voice settings.**
- [Introduction](https://docs.supertoneapi.com/en/api-reference/introduction.md): **Welcome to Supertone API**
- [Frequently Asked Questions](https://docs.supertoneapi.com/en/user-guide/faq.md): We've compiled frequently asked questions and their answers during API usage.
- [Error Handling](https://docs.supertoneapi.com/en/user-guide/handling-errors.md): Types of errors that may occur during requests and their causes and solutions.
- [Japanese Normalized TTS](https://docs.supertoneapi.com/en/user-guide/japanese-normalized-TTS.md): A guide to improving Japanese pronunciation accuracy in Text-to-Speech using normalized text.
- [Models](https://docs.supertoneapi.com/en/user-guide/models.md): Compare Supertone TTS models by quality, latency, supported languages, voice settings, and additional features to choose the best model for your use case.
- [Quickstart](https://docs.supertoneapi.com/en/user-guide/quickstart.md): A step-by-step guide on how to generate high-quality AI voices using Supertone API.
- [Rate Limits](https://docs.supertoneapi.com/en/user-guide/rate-limits.md): Request rate limit policies to prevent excessive usage.
- [Release Notes](https://docs.supertoneapi.com/en/user-guide/release-notes.md): Check the latest updates and changes to Supertone API.
- [Support](https://docs.supertoneapi.com/en/user-guide/support.md)
- [Text-to-Speech Guide](https://docs.supertoneapi.com/en/user-guide/text-to-speech.md): A step-by-step guide to parameter structure and usage for converting text to speech.
- [Voice Selection Guide](https://docs.supertoneapi.com/en/user-guide/voice-selection.md): A guide on how to find voice IDs to use and how to query voice information in API/Play.
- [Welcome](https://docs.supertoneapi.com/en/user-guide/welcome.md): Check out our user guides and API reference to make the most of Voice AI.

## OpenAPI Specs

- [openapi](https://docs.supertoneapi.com/openapi.json)

## Optional

- [Developer Console](https://console.supertoneapi.com)
- [Supertone Play](https://play.supertone.ai)