Upwork SDKs & Libraries: Official and Community Integrations (2026)

SDKs overview

Upwork offers a public API that allows developers to programmatically interact with its platform, supporting various operations such as posting job listings, searching for freelance talent, and managing contracts. To simplify these interactions, Upwork provides official Software Development Kits (SDKs) in several programming languages. These SDKs abstract the underlying API request and response mechanisms, allowing developers to focus on application logic rather than HTTP specifics or authentication protocols like OAuth 1.0a authorization flows. The availability of both official and community-supported libraries facilitates integration for a broad range of development environments.

The Upwork API itself operates over HTTPS and typically returns data in JSON format, which is a common practice for web APIs due to its readability and widespread support across programming languages. For instance, when a developer wants to retrieve a list of available jobs, an SDK handles the construction of the API endpoint URL, the inclusion of necessary authentication headers, and the parsing of the JSON response into language-specific objects or data structures.

While official SDKs are maintained directly by Upwork, community libraries often extend functionality, offer alternative language support, or provide specialized features not covered by the official offerings. These community projects are developed and maintained by independent developers and are typically open-source, allowing for peer review and collaborative enhancement. Before integrating any SDK, developers typically review its documentation, community activity, and maintenance status.

Official SDKs by language

Upwork maintains several official SDKs designed to streamline API interactions across popular programming languages. These SDKs encapsulate API endpoints, handle data serialization and deserialization, and manage the authentication process for the Upwork API. Each SDK is tailored to its respective language’s conventions, providing a familiar development experience for users of Python, PHP, Java, and Ruby.

The Python SDK, python-upwork, is distributed via PyPI, the Python Package Index, which is the official third-party software repository for Python. It provides classes and methods that map directly to the Upwork API's resources and actions, simplifying tasks such as client authorization, searching for jobs, or retrieving freelancer profiles.

For PHP developers, the upwork/php-upwork package is available through Composer, the dependency manager for PHP. This SDK integrates with modern PHP application frameworks and provides an object-oriented interface for interacting with the Upwork API, handling URL construction, request signing, and response parsing.

The Java SDK, typically managed through build tools like Maven or Gradle, offers a structured approach for Java applications to communicate with Upwork. It provides a set of client classes that abstract the HTTP communication layer, enabling developers to make API calls using Java objects and receive strongly-typed responses.

Ruby applications can utilize the upwork gem, distributed through RubyGems. This SDK follows typical Ruby conventions, making it suitable for integration into Rails applications or standalone Ruby scripts. It handles OAuth 1.0a authentication and provides methods for accessing various Upwork API endpoints.

Installation

Installation procedures for Upwork's official SDKs follow the standard practices for each respective language's package management system. Prior to installation, ensure that the appropriate language runtime and package manager (e.g., Python and pip, PHP and Composer, Java and Maven/Gradle, Ruby and Rubygems) are correctly set up on your development environment.

Python SDK Installation

To install the Python SDK, use pip, the Python package installer. Open your terminal or command prompt and execute:

pip install python-upwork

This command fetches the latest version of the python-upwork package from PyPI and installs it along with its dependencies.

PHP SDK Installation

For the PHP SDK, Composer is the recommended installation method. Navigate to your project's root directory in the terminal and run:

composer require upwork/php-upwork

Composer will add the upwork/php-upwork package to your composer.json file and install it into your vendor directory.

Java SDK Installation

Java SDKs are typically integrated by adding dependencies to your project's build file. For Maven, add the following to your pom.xml:

<dependency>
    <groupId>com.upwork</groupId>
    <artifactId>upwork-api</artifactId>
    <version>3.0.0</version> <!-- Use the latest version -->
</dependency>

For Gradle, add this to your build.gradle:

implementation 'com.upwork:upwork-api:3.0.0' // Use the latest version

Replace 3.0.0 with the current stable version of the Upwork Java API client as specified in the official documentation.

Ruby SDK Installation

To install the Ruby SDK, use the gem command, Ruby's package manager:

gem install upwork

This command will download and install the upwork gem and its dependencies from RubyGems.org.

Quickstart example

This quickstart example demonstrates how to use the Python SDK to authorize an application and retrieve basic user information from the Upwork API. Before running this code, ensure you have an Upwork API account and have generated your API key (consumer key) and secret (consumer secret) from your Upwork API developer profile.

Python Quickstart: Retrieving User Information

First, replace YOUR_CONSUMER_KEY and YOUR_CONSUMER_SECRET with your actual API credentials. The example then guides through initiating the OAuth 1.0a authorization flow, which is a required step for most Upwork API interactions to obtain an access token and secret.

import upwork

# 1. Replace with your actual Consumer Key and Secret
public_key = 'YOUR_CONSUMER_KEY'
secret_key = 'YOUR_CONSUMER_SECRET'

# 2. Instantiate the Upwork client
#    The 'debug' parameter can be set to False in production
client = upwork.Client(public_key, secret_key, debug=True)

# 3. Get the authorization URL
#    The 'callback_url' is where Upwork redirects after authorization
#    For command-line applications, 'oob' (out-of-band) is common.
request_token_info = client.auth.get_request_token('oob')

# 4. Store request token and secret (for later use in verification)
#    In a web app, these would typically be stored in a session.
request_token = request_token_info['oauth_token']
request_token_secret = request_token_info['oauth_token_secret']

# 5. Print the authorization URL and prompt user to visit it
print("Visit this URL to authorize your application:")
print(client.auth.get_authorize_url(request_token_info))

# 6. After authorization, the user will be presented with a verification code.
#    Prompt the user to enter this code.
verifier = input('Enter the verification code from Upwork: ')

# 7. Exchange the request token and verifier for an access token
access_token_info = client.auth.get_access_token(
    request_token,
    request_token_secret,
    verifier
)

# 8. Store the access token and secret securely
#    These tokens grant your application persistent access to the Upwork API.
access_token = access_token_info['oauth_token']
access_token_secret = access_token_info['oauth_token_secret']

print(f"Access Token: {access_token}")
print(f"Access Token Secret: {access_token_secret}")

# 9. Re-initialize the client with access tokens for authenticated calls
#    This step is crucial for making subsequent API calls without re-authorizing.
client = upwork.Client(public_key, secret_key, 
                        oauth_access_token=access_token, 
                        oauth_access_token_secret=access_token_secret)

# 10. Make an authenticated API call, e.g., get my user information
try:
    my_info = client.hr.get_user_info()
    print("\nSuccessfully fetched user information:")
    print(f"First Name: {my_info['first_name']}")
    print(f"Last Name: {my_info['last_name']}")
    print(f"Timezone: {my_info['timezone']}")
    # Further process my_info dictionary as needed
except Exception as e:
    print(f"Error fetching user info: {e}")

This script first initializes the Upwork API client with your consumer key and secret. It then initiates the OAuth 1.0a authorization flow by requesting a temporary request token and generating an authorization URL. The user must visit this URL in their browser, log into their Upwork account if not already logged in, and grant permission to the application. After authorization, Upwork provides a verification code that the user inputs back into the script. This code is then exchanged for a permanent access token and secret, which are essential for making subsequent authenticated API calls, such as fetching personal user details. The final step re-initializes the client with these access tokens, demonstrating how to make a simple authenticated call to retrieve user information.

Community libraries

Beyond the official SDKs, the Upwork developer community has contributed various libraries and tools that extend API access to other languages or provide specialized functionalities. While these are not officially supported by Upwork, they can offer flexibility and address specific use cases. Developers considering community libraries should review their source code, licensing, and community support channels to assess reliability and ongoing maintenance.

Examples of community contributions might include:

• Go/Golang clients: Unofficial client libraries written in Go, allowing developers to integrate Upwork API calls into Go applications, which are popular for building high-performance microservices and web backends.
• Node.js/JavaScript wrappers: Libraries that provide a JavaScript-friendly interface for the Upwork API, catering to front-end and back-end developers using Node.js environments. These often leverage asynchronous programming patterns common in JavaScript.
• API client generators: Tools that can generate client code for various languages from the Upwork API's OpenAPI/Swagger specification (if available), potentially offering clients in languages not covered by official SDKs. For example, Swagger Codegen can process an OpenAPI definition to create client SDKs in multiple languages.
• Specific utility scripts: Smaller, focused scripts or libraries designed for particular tasks, such as automating job application submissions, parsing specific data from job listings, or generating reports.

When selecting a community library, it is advisable to check the project's GitHub repository for recent commits, issue activity, and the number of contributors. A well-maintained project with an active community is generally a more reliable choice for long-term integration. Additionally, understanding the nuances of Upwork's OAuth 1.0a authentication requirements is crucial, regardless of the library used, as it forms the security foundation for all API interactions.