Blockchain SDKs & Libraries: Official and Community (2026)

SDKs overview

Software Development Kits (SDKs) and libraries for Blockchain.com facilitate programmatic interaction with its core services, including cryptocurrency wallets, exchange functionalities, and access to blockchain transaction data. These tools abstract the complexities of direct API calls, allowing developers to integrate features such as sending and receiving cryptocurrencies, querying transaction histories, and monitoring blockchain activity into custom applications. The primary interface for data access is the Blockchain Explorer API.

While Blockchain.com maintains official documentation for its API, many SDKs and libraries are developed and maintained by the broader developer community. These community-driven projects often expand language support and offer tailored functionalities not always covered by official client libraries. Developers can choose tools based on their preferred programming language, project requirements, and the level of abstraction needed for interacting with the Blockchain.com ecosystem.

Official SDKs by language

Blockchain.com primarily exposes its functionalities through a RESTful API, detailed within the Blockchain Explorer API documentation. While historically there have been a few actively maintained client libraries, the current emphasis for direct API interaction often involves using standard HTTP client libraries in various languages to consume the REST API. However, several community-supported libraries have emerged to simplify this process. For direct API interaction, developers utilize HTTP requests to endpoints for querying blockchain data, managing wallets, and executing trades.

The following table outlines some of the most commonly used official and well-supported community libraries that align closely with official API functionalities:

Installation

Installing SDKs and libraries for Blockchain.com typically follows the standard package management practices for each respective programming language. Below are common installation instructions for popular languages.

Python

For Python, the blockchain-python library can be installed using pip, the Python package installer:

pip install blockchain

Ensure you have pip installed and configured in your environment.

Java

For Java projects, if using Maven, add the dependency to your pom.xml file:

<dependency>
    <groupId>info.blockchain</groupId>
    <artifactId>blockchain-java-api</artifactId>
    <version>1.0.0</version> <!-- Use the latest version -->
</dependency>

If using Gradle, add to your build.gradle file:

implementation 'info.blockchain:blockchain-java-api:1.0.0' <!-- Use the latest version -->

Consult the specific library's documentation for the most current version and repository details.

Ruby

For Ruby, the blockchain-ruby gem can be installed using the gem command:

gem install blockchain-rb

Node.js

For Node.js projects, the blockchain.info-api-v2 package is installed via npm:

npm install blockchain.info-api-v2

Always refer to the specific Node.js package documentation for latest installation instructions and prerequisites.

Quickstart example

This quickstart example demonstrates how to retrieve basic Bitcoin address information using a common Python library for the Blockchain.com API. This typically involves querying transaction history and balance. An API key may be required for certain endpoints, depending on the library and the specific API call being made.

Python example: Get Bitcoin address balance

First, ensure the blockchain library is installed:

pip install blockchain

Then, use the following Python code snippet:

import blockchain

# Initialize the Blockchain API client
bc = blockchain.Blockchain()

# Define the Bitcoin address to query
address = "bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh" # Example Bitcoin address

# Get address balance and transaction information
try:
    address_data = bc.get_address(address)
    print(f"Address: {address}")
    print(f"Total Received: {address_data['total_received']} Satoshi")
    print(f"Total Sent: {address_data['total_sent']} Satoshi")
    print(f"Final Balance: {address_data['final_balance']} Satoshi")
    print(f"Number of Transactions: {address_data['n_tx']}")
except Exception as e:
    print(f"Error retrieving address data: {e}")

This script connects to the Blockchain.com API, queries a specified Bitcoin address, and prints its total received, total sent, current balance, and the number of associated transactions. The values are typically returned in Satoshi, the smallest unit of Bitcoin.

Community libraries

The Blockchain.com ecosystem benefits from a broad range of community-contributed libraries and tools. These libraries often extend functionality, provide alternative language bindings, or offer specialized features that cater to specific developer needs. While not officially maintained by Blockchain.com, many are actively developed and supported by their respective communities.

Some notable categories and examples of community libraries include:

• Wallet Interaction Libraries: These libraries simplify the process of creating, managing, and interacting with cryptocurrency wallets, including key generation, transaction signing, and broadcasting.
• Exchange Trading Bots: Tools built to automate trading strategies on the Blockchain.com Exchange, often integrating market data and order placement functionalities.
• Data Analytics Tools: Libraries designed for parsing and analyzing blockchain data retrieved from the Explorer API, facilitating advanced reporting and insights.
• Language-Specific Wrappers: Beyond the commonly used languages, developers have created wrappers for less common programming environments, expanding accessibility.

When using community libraries, it is advisable to:

• Check Project Activity: Verify that the library is actively maintained and has recent commits.
• Review Documentation: Ensure comprehensive documentation is available for proper usage and understanding.
• Examine Source Code: For critical applications, especially those handling private keys or sensitive information, reviewing the source code for security vulnerabilities is recommended.
• Community Support: Look for active communities (e.g., GitHub discussions, forums) where you can find support and report issues.

Examples of community libraries can often be found by searching GitHub or package repositories (like PyPI, npm, RubyGems, Maven Central) for terms such as "blockchain.com API" or "blockchain info" combined with the desired programming language.