SzybkiSMS.pl Messaging REST API SDK for Python (powered by GSMService.pl)

This package includes Messaging SDK for Python to send SMS & MMS messages directly from your app via https://szybkisms.pl messaging platform.

Additional documentation:

A documentation of all methods and types is available below in section Available Resources and Operations .

Also you can refer to the REST API documentation for additional details about the basics of this SDK.

Table of Contents

• SzybkiSMS.pl Messaging REST API SDK for Python (powered by GSMService.pl)
  • Additional documentation:
  • SDK Installation
  • IDE Support
  • SDK Example Usage
  • Available Resources and Operations
  • Retries
  • Error Handling
  • Server Selection
  • Custom HTTP Client
  • Authentication
  • Resource Management
  • Debugging
• Development
  • Maturity
  • Contributions

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 gsmservice-gateway

PIP

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

pip install gsmservice-gateway

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 gsmservice-gateway

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 gsmservice-gateway 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 = ">=3.10"
# dependencies = [
#     "gsmservice-gateway",
# ]
# ///

from gsmservice_gateway import Client

sdk = Client(
  # 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

Sending single SMS Message

This example demonstrates simple sending SMS message to a single recipient:

# Synchronous Example
from gsmservice_gateway import Client


with Client(
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.outgoing.sms.send(request={
        "recipients": "+48999999999",
        "message": "This is SMS message content.",
        "sender": "Bramka SMS",
        "type": 1,
        "unicode": True,
        "flash": False,
        "date_": None,
    })

    # Handle response
    print(res)

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

# Asynchronous Example
import asyncio
from gsmservice_gateway import Client

async def main():

    async with Client(
        bearer="<YOUR API ACCESS TOKEN>",
    ) as client:

        res = await client.outgoing.sms.send_async(request={
            "recipients": "+48999999999",
            "message": "This is SMS message content.",
            "sender": "Bramka SMS",
            "type": 1,
            "unicode": True,
            "flash": False,
            "date_": None,
        })

        # Handle response
        print(res)

asyncio.run(main())

Sending single MMS Message

This example demonstrates simple sending MMS message to a single recipient:

# Synchronous Example
from gsmservice_gateway import Client


with Client(
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.outgoing.mms.send(request={
        "recipients": "+48999999999",
        "subject": "This is a subject of the message",
        "message": "This is MMS message content.",
        "attachments": "R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7",
        "date_": None,
    })

    # Handle response
    print(res)

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

# Asynchronous Example
import asyncio
from gsmservice_gateway import Client

async def main():

    async with Client(
        bearer="<YOUR API ACCESS TOKEN>",
    ) as client:

        res = await client.outgoing.mms.send_async(request={
            "recipients": "+48999999999",
            "subject": "This is a subject of the message",
            "message": "This is MMS message content.",
            "attachments": "R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7",
            "date_": None,
        })

        # Handle response
        print(res)

asyncio.run(main())

Available Resources and Operations

Available methods

Accounts

• get - Get account details
• get_subaccount - Get subaccount details

Common

• ping - Checks API availability and version

Incoming

• list - List the received SMS messages
• get_by_ids - Get the incoming messages by IDs
• remove_by_ids - Remove the incoming messages from your inbox

Outgoing

• get_by_ids - Get the messages details and status by IDs
• cancel_scheduled - Cancel a scheduled messages
• list - Lists the history of sent messages

Outgoing.Mms

• get_price - Check the price of MMS Messages
• send - Send MMS Messages

Outgoing.Sms

• get_price - Check the price of SMS Messages
• send - Send SMS Messages

Senders

• list - List allowed senders names
• add - Add a new sender name
• delete - Delete a sender name
• set_default - Set default sender name

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 gsmservice_gateway import Client
from gsmservice_gateway.utils import BackoffStrategy, RetryConfig


with Client(
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.accounts.get(,
        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 gsmservice_gateway import Client
from gsmservice_gateway.utils import BackoffStrategy, RetryConfig


with Client(
    retry_config=RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False),
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.accounts.get()

    # Handle response
    print(res)

Error Handling

ClientError 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 gsmservice_gateway import Client, models


with Client(
    bearer="<YOUR API ACCESS TOKEN>",
) as client:
    res = None
    try:

        res = client.accounts.get()

        # Handle response
        print(res)


    except models.ClientError 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, models.ErrorResponseError):
            print(e.data.type)  # Optional[str]
            print(e.data.status)  # Optional[int]
            print(e.data.title)  # Optional[str]
            print(e.data.detail)  # Optional[str]
            print(e.data.code)  # Optional[str]

Error Classes

Primary errors:

• ClientError: The base class for HTTP error responses.
  • ErrorResponseError: RFC 9457 Problem Details. See the error catalog for problem types and recovery steps.

Less common errors (5)

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 ClientError:

• ResponseValidationError: Type mismatch between the response data and the expected Pydantic model. Provides access to the Pydantic validation error via the cause attribute.

Server Selection

Select Server by Name

You can override the default server globally by passing a server name to the server: str optional parameter when initializing the SDK client instance. The selected server will then be used as the default on the operations that use it. This table lists the names associated with the available servers:

Name	Server	Description
prod	https://api.szybkisms.pl/rest	Production system
sandbox	https://api.szybkisms.pl/rest-sandbox	Test system (SANDBOX)

Example

from gsmservice_gateway import Client


with Client(
    server="prod",
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.accounts.get()

    # Handle response
    print(res)

Override Server URL Per-Client

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

from gsmservice_gateway import Client


with Client(
    server_url="https://api.szybkisms.pl/rest",
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.accounts.get()

    # 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 gsmservice_gateway import Client
import httpx

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

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

from gsmservice_gateway import Client
from gsmservice_gateway.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 = Client(async_client=CustomClient(httpx.AsyncClient()))

httpx2 (Pydantic's httpx fork)

httpx2 is Pydantic's maintained fork of httpx. To run this SDK on httpx2, call alias_httpx() at your program's entry point, before importing the SDK, so every import httpx — including the ones inside the SDK — resolves to httpx2:

import httpx2

httpx2.alias_httpx()

from gsmservice_gateway import Client

s = Client()

An SDK can also be generated against httpx2 directly, so it depends on the fork instead of httpx, by setting python.httpClientLibrary: httpx2 in gen.yaml.

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

Name	Type	Scheme	Environment Variable
bearer	http	HTTP Bearer	GATEWAY_API_BEARER

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

from gsmservice_gateway import Client


with Client(
    bearer="<YOUR API ACCESS TOKEN>",
) as client:

    res = client.accounts.get()

    # Handle response
    print(res)

Resource Management

The Client 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 gsmservice_gateway import Client
def main():

    with Client(
        bearer="<YOUR API ACCESS TOKEN>",
    ) as client:
        # Rest of application here...


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

    async with Client(
        bearer="<YOUR API ACCESS TOKEN>",
    ) as 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 gsmservice_gateway import Client
import logging

logging.basicConfig(level=logging.DEBUG)
s = Client(debug_logger=logging.getLogger("gsmservice_gateway"))

You can also enable a default debug logger by setting an environment variable GATEWAY_API_DEBUG to true.

Development

Maturity

This SDK is in continuous development and there may be breaking changes between a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.