Supertone Python Library

Summary

Supertone Public API: Supertone API is a RESTful API for using our state-of-the-art AI voice models.

SDK Installation

The SDK can be installed with uv, pip, or poetry package managers.

uv

uv is a fast Python package installer and resolver, designed as a drop-in replacement for pip and pip-tools. It's recommended for its speed and modern Python tooling capabilities.

uv add supertone

PIP

PIP is the default package installer for Python, enabling easy installation and management of packages from PyPI via the command line.

pip install supertone

Poetry

Poetry is a modern tool that simplifies dependency management and package publishing by using a single pyproject.toml file to handle project metadata and dependencies.

poetry add supertone

SDK Installation

Tip

To finish publishing your SDK to PyPI you must run your first generation action.

Note

Python version upgrade policy

Once a Python version reaches its official end of life date, a 3-month grace period is provided for users to upgrade. Following this grace period, the minimum python version supported in the SDK will be updated.

The SDK can be installed with uv, pip, or poetry package managers.

uv

uv is a fast Python package installer and resolver, designed as a drop-in replacement for pip and pip-tools. It's recommended for its speed and modern Python tooling capabilities.

uv add git+<UNSET>.git

PIP

PIP is the default package installer for Python, enabling easy installation and management of packages from PyPI via the command line.

pip install git+<UNSET>.git

Poetry

Poetry is a modern tool that simplifies dependency management and package publishing by using a single pyproject.toml file to handle project metadata and dependencies.

poetry add git+<UNSET>.git

Shell and script usage with `uv`

You can use this SDK in a Python shell with uv and the uvx command that comes with it like so:

uvx --from supertone python

It's also possible to write a standalone Python script without needing to set up a whole project like so:

#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.9"
# dependencies = [
#     "supertone",
# ]
# ///

from supertone import Supertone

sdk = Supertone(
  # SDK arguments
)

# Rest of script here...

Once that is saved to a file, you can run it with uv run script.py where script.py can be replaced with the actual file name.

IDE Support

PyCharm

Generally, the SDK will work well with most IDEs out of the box. However, when using PyCharm, you can enjoy much better integration with Pydantic by installing an additional plugin.

PyCharm Pydantic Plugin

SDK Example Usage

Example

# Synchronous Example
from supertone import Supertone, models


with Supertone(
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

    # Handle response
    print(res)

The same SDK client can also be used to make asynchronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from supertone import Supertone, models

async def main():

    async with Supertone(
        api_key="<YOUR_API_KEY_HERE>",
    ) as s_client:

        res = await s_client.text_to_speech.create_speech_async(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

        # Handle response
        print(res)

asyncio.run(main())

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

Name	Type	Scheme
`api_key`	apiKey	API key

To authenticate with the API the api_key parameter must be set when initializing the SDK client instance. For example:

from supertone import Supertone, models


with Supertone(
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

    # Handle response
    print(res)

Models

Supertone’s Text-to-Speech API provides multiple TTS models, each with different supported languages, available voice settings, and streaming capabilities.

Model Overview

Model Name	Identifier	Streaming Support (`stream_speech`)	Voice Settings Support
SONA Speech 1	`sona_speech_1`	✅ Supported	Supports all Voice Settings
Supertonic API 1	`supertonic_api_1`	❌ Not supported	Supports only the `speed` setting (others are ignored)
SONA Speech 2	`sona_speech_2`	❌ Not supported	Supports all Voice Settings except `subharmonic_amplitude_control`
SONA Speech 2 Flash	`sona_speech_2_flash`	❌ Not supported	Supports all Voice Settings except `similarity`, `text_guidance`,`subharmonic_amplitude_control`

Note

Streaming Support

Streaming TTS using the stream_speech endpoint is only available for the sona_speech_1 model.

Supported Languages by Model

Note

The set of supported input languages varies depending on the TTS model.

sona_speech_1
- en, ko, ja
supertonic_api_1
- en, ko, ja, es, pt
sona_speech_2
- en, ko, ja, bg, cs, da, el, es, et, fi, hu, it, nl, pl, pt, ro,
  ar, de, fr, hi, id, ru, vi
sona_speech_2_flash
- en, ko, ja, bg, cs, da, el, es, et, fi, hu, it, nl, pl, pt, ro,
  ar, de, fr, hi, id, ru, vi

Voice Settings (Optional)

Some TTS models support optional voice settings that allow fine control over output speech characteristics (e.g., speed, pitch, pitch variance).

Note

The available Voice Settings vary depending on the TTS model.

sona_speech_1
- Supports all available Voice Settings.
supertonic_api_1
- Supports only the speed setting. All other settings will be ignored.
sona_speech_2
- Supports all Voice Settings except subharmonic_amplitude_control.
sona_speech_2_flash
- Supports all Voice Settings except similarity, text_guidance, subharmonic_amplitude_control.

All Voice Settings are optional. When omitted, each model’s default values will be applied.

Available Resources and Operations

Available methods

custom_voices

create_cloned_voice - Create cloned voice
list_custom_voices - Gets custom (cloned) voices
search_custom_voices - Search custom (cloned) voices
get_custom_voice - Get single cloned voice
edit_custom_voice - Update cloned voice (partial update)
delete_custom_voice - Delete cloned voice

text_to_speech

create_speech - Convert text to speech
stream_speech - Convert text to speech with streaming response
predict_duration - Predict text-to-speech duration

usage

get_voice_usage - Retrieve TTS API usage data
get_usage - Retrieve advanced API usage analytics
get_credit_balance - Retrieve credit balance

voices

list_voices - Gets available voices
search_voices - Search voices.
get_voice - Get voice details by ID

File uploads

Certain SDK methods accept file objects as part of a request body or multi-part request. It is possible and typically recommended to upload files as a stream rather than reading the entire contents into memory. This avoids excessive memory consumption and potentially crashing with out-of-memory errors when working with very large files. The following example demonstrates how to attach a file stream to a request.

Tip

For endpoints that handle file uploads bytes arrays can also be used. However, using streams is recommended for large files.

from supertone import Supertone


with Supertone(
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.custom_voices.create_cloned_voice(files={
        "file_name": "example.file",
        "content": open("example.file", "rb"),
    }, name="<value>")

    # Handle response
    print(res)

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a RetryConfig object to the call:

from supertone import Supertone, models
from supertone.utils import BackoffStrategy, RetryConfig


with Supertone(
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False,
        RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False))

    # Handle response
    print(res)

If you'd like to override the default retry strategy for all operations that support retries, you can use the retry_config optional parameter when initializing the SDK:

from supertone import Supertone, models
from supertone.utils import BackoffStrategy, RetryConfig


with Supertone(
    retry_config=RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False),
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

    # Handle response
    print(res)

Error Handling

SupertoneError is the base class for all HTTP error responses. It has the following properties:

Property	Type	Description
`err.message`	`str`	Error message
`err.status_code`	`int`	HTTP response status code eg `404`
`err.headers`	`httpx.Headers`	HTTP response headers
`err.body`	`str`	HTTP body. Can be empty string if no body is returned.
`err.raw_response`	`httpx.Response`	Raw HTTP response
`err.data`		Optional. Some errors may contain structured data. See Error Classes.

Example

from supertone import Supertone, errors, models


with Supertone(
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:
    res = None
    try:

        res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

        # Handle response
        print(res)


    except errors.SupertoneError as e:
        # The base class for HTTP error responses
        print(e.message)
        print(e.status_code)
        print(e.body)
        print(e.headers)
        print(e.raw_response)

        # Depending on the method different errors may be thrown
        if isinstance(e, errors.BadRequestErrorResponse):
            print(e.data.status)  # str
            print(e.data.message)  # str

Error Classes

Primary error:

SupertoneError: The base class for HTTP error responses.

Less common errors (15)

Network errors:

httpx.RequestError: Base class for request errors.
- httpx.ConnectError: HTTP client was unable to make a request to a server.
- httpx.TimeoutException: HTTP request timed out.

Inherit from SupertoneError:

UnauthorizedErrorResponse: Unauthorized: Invalid API key. Status code 401. Applicable to 10 of 15 methods.*
InternalServerErrorResponse: Status code 500. Applicable to 10 of 15 methods.*
NotFoundErrorResponse: Status code 404. Applicable to 9 of 15 methods.*
BadRequestErrorResponse: Status code 400. Applicable to 5 of 15 methods.*
ForbiddenErrorResponse: Status code 403. Applicable to 4 of 15 methods.*
RequestTimeoutErrorResponse: Status code 408. Applicable to 4 of 15 methods.*
TooManyRequestsErrorResponse: Status code 429. Applicable to 4 of 15 methods.*
PaymentRequiredErrorResponse: Status code 402. Applicable to 3 of 15 methods.*
PayloadTooLargeErrorResponse: Payload Too Large: File size exceeds 3MB limit. Status code 413. Applicable to 1 of 15 methods.*
UnsupportedMediaTypeErrorResponse: Unsupported Media Type: Invalid audio file format. Status code 415. Applicable to 1 of 15 methods.*
ResponseValidationError: Type mismatch between the response data and the expected Pydantic model. Provides access to the Pydantic validation error via the cause attribute.

* Check the method documentation to see if the error is applicable.

Additional Example Code

Additional example code can be found in the examples directory.

Server Selection

Override Server URL Per-Client

The default server can be overridden globally by passing a URL to the server_url: str optional parameter when initializing the SDK client instance. For example:

from supertone import Supertone, models


with Supertone(
    server_url="https://supertoneapi.com",
    api_key="<YOUR_API_KEY_HERE>",
) as s_client:

    res = s_client.text_to_speech.create_speech(voice_id="<id>", text="<value>", language=models.APIConvertTextToSpeechUsingCharacterRequestLanguage.JA, model=models.APIConvertTextToSpeechUsingCharacterRequestModel.SONA_SPEECH_1, output_format=models.APIConvertTextToSpeechUsingCharacterRequestOutputFormat.WAV, include_phonemes=False)

    # Handle response
    print(res)

Custom HTTP Client

The Python SDK makes API calls using the httpx HTTP library. In order to provide a convenient way to configure timeouts, cookies, proxies, custom headers, and other low-level configuration, you can initialize the SDK client with your own HTTP client instance. Depending on whether you are using the sync or async version of the SDK, you can pass an instance of HttpClient or AsyncHttpClient respectively, which are Protocol's ensuring that the client has the necessary methods to make API calls. This allows you to wrap the client with your own custom logic, such as adding custom headers, logging, or error handling, or you can just pass an instance of httpx.Client or httpx.AsyncClient directly.

For example, you could specify a header for every request that this sdk makes as follows:

from supertone import Supertone
import httpx

http_client = httpx.Client(headers={"x-custom-header": "someValue"})
s = Supertone(client=http_client)

or you could wrap the client with your own custom logic:

from supertone import Supertone
from supertone.httpclient import AsyncHttpClient
import httpx

class CustomClient(AsyncHttpClient):
    client: AsyncHttpClient

    def __init__(self, client: AsyncHttpClient):
        self.client = client

    async def send(
        self,
        request: httpx.Request,
        *,
        stream: bool = False,
        auth: Union[
            httpx._types.AuthTypes, httpx._client.UseClientDefault, None
        ] = httpx.USE_CLIENT_DEFAULT,
        follow_redirects: Union[
            bool, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
    ) -> httpx.Response:
        request.headers["Client-Level-Header"] = "added by client"

        return await self.client.send(
            request, stream=stream, auth=auth, follow_redirects=follow_redirects
        )

    def build_request(
        self,
        method: str,
        url: httpx._types.URLTypes,
        *,
        content: Optional[httpx._types.RequestContent] = None,
        data: Optional[httpx._types.RequestData] = None,
        files: Optional[httpx._types.RequestFiles] = None,
        json: Optional[Any] = None,
        params: Optional[httpx._types.QueryParamTypes] = None,
        headers: Optional[httpx._types.HeaderTypes] = None,
        cookies: Optional[httpx._types.CookieTypes] = None,
        timeout: Union[
            httpx._types.TimeoutTypes, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
        extensions: Optional[httpx._types.RequestExtensions] = None,
    ) -> httpx.Request:
        return self.client.build_request(
            method,
            url,
            content=content,
            data=data,
            files=files,
            json=json,
            params=params,
            headers=headers,
            cookies=cookies,
            timeout=timeout,
            extensions=extensions,
        )

s = Supertone(async_client=CustomClient(httpx.AsyncClient()))

Resource Management

The Supertone class implements the context manager protocol and registers a finalizer function to close the underlying sync and async HTTPX clients it uses under the hood. This will close HTTP connections, release memory and free up other resources held by the SDK. In short-lived Python programs and notebooks that make a few SDK method calls, resource management may not be a concern. However, in longer-lived programs, it is beneficial to create a single SDK instance via a context manager and reuse it across the application.

from supertone import Supertone
def main():

    with Supertone(
        api_key="<YOUR_API_KEY_HERE>",
    ) as s_client:
        # Rest of application here...


# Or when using async:
async def amain():

    async with Supertone(
        api_key="<YOUR_API_KEY_HERE>",
    ) as s_client:
        # Rest of application here...

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass your own logger class directly into your SDK.

from supertone import Supertone
import logging

logging.basicConfig(level=logging.DEBUG)
s = Supertone(debug_logger=logging.getLogger("supertone"))

Name		Name	Last commit message	Last commit date
Latest commit History 44 Commits
.speakeasy		.speakeasy
custom_test		custom_test
docs		docs
examples		examples
images		images
scripts		scripts
src/supertone		src/supertone
.gitattributes		.gitattributes
.gitignore		.gitignore
CONTRIBUTING.md		CONTRIBUTING.md
LICENSE		LICENSE
README.md		README.md
USAGE.md		USAGE.md
fix-python-version.sh		fix-python-version.sh
openapi.json		openapi.json
py.typed		py.typed
pylintrc		pylintrc
pyproject.toml		pyproject.toml
run-speakeasy-steps.sh		run-speakeasy-steps.sh
uv.lock		uv.lock

License

supertone-inc/supertone-python

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Supertone Python Library

Summary

Table of Contents

SDK Installation

uv

PIP

Poetry

SDK Installation

uv

PIP

Poetry

Shell and script usage with uv

IDE Support

PyCharm

SDK Example Usage

Example

Authentication

Per-Client Security Schemes

Models

Model Overview

Supported Languages by Model

Voice Settings (Optional)

Available Resources and Operations

custom_voices

text_to_speech

usage

voices

File uploads

Retries

Error Handling

Example

Error Classes

Additional Example Code

Server Selection

Override Server URL Per-Client

Custom HTTP Client

Resource Management

Debugging

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Shell and script usage with `uv`

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