Best Blockchain APIs for Freelancers

Stellar empowers builders to unlock human and economic potential. It combines a powerful, decentralized blockchain network with a global ecosystem of innovators to create opportunities as borderless as ideas. It offers the tools to make a difference in the real world through new digital asset products and services that enhance access to the global financial system.

Blockdaemon: Leading the way in enterprise blockchain solutions. Trusted by 300+ institutions, powering 100k+ nodes, backed by $390M. Choose us for innovation that delivers results!

MindCloud is not only a modern iPaaS but also provides a full service solution for small and medium sized businesses that doesn't require you assigning technical staff to the project. We have over 50 pre-built connectors and can add any new software platform that has an API or allows automated import/exports. We also support EDI and FTP integrations. Some of our features connectors are: Salesforce, Monday.com, Hubspot, QuickBooks Desktop, QuickBooks Online, Method:CRM, Zapier, Walmart, Amazon, Overstock, Ebay, Groupon, Mercado Libre, HSN, Airtable, Google Sheets and many, many others. Automate all of your business process with MindCloud. Eliminate double data entry. Integrate your business. Simplify your life.

The easiest and fastest blockchain development platform. Unified framework for 40+ digital assets and 40+ blockchain protocols. One Javascript SDK that supports all 40+ blockchain protocols. Simplify your development by integrating any blockchain directly into your JavaScript Backend. WooCommerce allows you to create and sell NFTs from within your WooCommerce website. The plugin is free and easy to set up in minutes. Open-source key management system that secures your private keys, mnemonics and allows you to sign transactions on-premise. A command line interface for interacting with blockchains. Access our infrastructure via REST API, with unified commands across all supported Blockchains. You can quickly and easily create apps on any supported Blockchain without any previous blockchain experience.

Chainstack's APIs and software are used by thousands of businesses, large and small, to build, scale, and maintain blockchain applications. To ensure your security and control, Chainstack's APIs offer secure node connections and key security best practices. Invite other members to join your network and deploy their infrastructure using simple network management tools. You can build and deploy the blockchain protocol that suits your needs. The protocol will never be updated or modified again. Chainstack's managed services for blockchain make it easy to launch, join, and scale decentralized networks. You can now safely experiment with enterprise-grade tools and services and then run production. Continuously monitor and provision your resources.

We have provided node building and API customization for more than 2000+ enterprises. Our customers can save money on node setup, block synchronization, storage occupation, operation, maintenance, and other costs by having a stable and fast data interface that gives them real-time access the blockchain data. It makes it easy to develop related blockchain applications. Tokenview offers premium customers customized services, such as historical data retrieval from public chains, alerts about suspicious transfers for financial institutions, wallet services, and more. Tokenview's multi-crypto blockchain data APIs provides structured chain data as well as wallet service, large transfer alert, address monitoring, and so forth.

Portfolio tracking, address and transaction tags and notes, watch services notifications, crypto accounting, and portfolio tracking. With detailed balance charts and transactions, you can track the address portfolios of any Ethereum address. View daily balances, trading volumes and operations. Tag and note any transaction or address. It is a simple tool that you can use for crypto accounting without registration. Export transaction history for any address tags/notes as CSV file with historical price. Explore marketing opportunities with the token API and display widgets. With the industry-first Bulk API Monitor, you can track an unlimited number of Ethereum tokens and addresses. All-in-one platform to explore the Ethereum blockchain. View historical balances in USD. You can receive email or telegram notifications for any incoming transaction from any address using the watching service.

Onmeta (onmeta.in), provides the fastest on-and-off ramp solutions (API/widget Integration) to web3 Dapps to help them improve user experience and accelerate mainstream adoption. Onmeta's solutions make it easy to process on- and off-ramp payments in under 60 seconds. It is currently the only service provider that supports INR fiat on ramp and supports 5000+ tokens across Polygon and Ethereum, BNB and Arbitrum blockchains. Work is underway to support 20+ blockchains and 5+ emerging market fiat currencies by the end of this year. It currently has 15+ dApps using its solution.

GetBlock is a Blockchain-as-a-Service (BaaS) platform that provides a fast and easy API connection to full nodes from 50+ leading blockchain platforms. It allows you to request information on a node's chain without having to manually set it up with JSON-RPC or REST. This service is ideal for beginners and young entrepreneurs, as well for crypto developers and users. It is also suitable for those who do not have the resources or time to run their own full node. Register an account to get started with GetBlock. You will receive an API key and the relevant data on the dashboard.

Venly is a blockchain technology provider that creates tools and products to help companies benefit from blockchain technology. We offer a whole technology stack to bring platforms, apps, and brands into Web3. We provide marketplaces, wallets, and NFT solutions to assist businesses in smoothly integrating web3 technology and onboarding customers. Our solutions use a Web2 interface that developers and users are already familiar with to make blockchain easy to use. Venly enables the adoption of blockchain by offering reliable and user-friendly software solutions. We are making blockchain accessible for everyone. Venly's products and services include: WALLET SOLUTIONS → Instant Web3 Wallets for Your Users NFT TOOLS → Your Complete NFT Toolkit MARKETPLACE SOLUTIONS → NFT Marketplace Built for the Mainstream SHOPIFY NFT APP → Sell NFTs in Your Shopify Store WEB3 GAMING TOOLKIT → Make Your Game Web3 Ready

QuickNode simplifies blockchain infrastructure for teams big & small. A lightning-fast global API provides instant access to Ethereum, Solana, Bitcoin, Polygon, BSC, Fantom, Avalanche, Terra, Celo, Optimism, Arbitrum, Algorand, Harmony & Gnosis (xDai) networks. Access chain data via JSON-RPC over HTTPS or wss (websocket) endpoints. Monitor usage with analytics dashboard and ship faster with tools like 1-click WebHooks for smart-contract events, NFT, and ERC20 token APIs. Thousands of nodes launched; trusted by top blockchain projects & businesses; QuickNode is helping the blockchain ecosystem grow since 2017!

Moralis is the fastest way to go from idea to mass-scale app. It lets you focus on great experiences and less on the heavy lifting. Our fully managed, infinitely scalable infrastructure is ready to go. Sync all users and smart contracts directly into your Moralis Database. All on-chain transactions are immediately reflected in the database. It's almost like magic. You no longer have to be tied down to one platform or blockchain solution. Moralis allows you to easily integrate with an endless number of external projects, chains and technologies, allowing for maximum extensibility. Moralis platform components can be used to enhance and extend your existing projects, or you can add new components from Moralis. Maximum flexibility with zero lock-in

Coinbase is the easiest way to manage, buy, and sell your cryptocurrency portfolio. Sign up now to get $5 in Bitcoin immediately. Terms apply. Learn how specific cryptocurrencies work and get a little bit of each cryptocurrency to test out. Coinbase offers a wide range of features that make it the best platform to trade. You can buy and sell digital currencies and keep track of them all in one place. You can slowly invest in cryptocurrency by scheduling buys daily or weekly. You can also store your funds in a vault that allows for delayed withdrawals. The Coinbase app for Android and iOS keeps you up to date with the market. The vast majority of digital assets are stored in secure offline storage. Our insurance policy covers cryptocurrency stored on our servers. Coinbase supports many of the most popular digital currencies.

Our DEX GraphQL APIs allow you to trade multiple DEX protocols on different blockchains in real-time. Trade data can be accessed for protocols such as Kyber, Uniswap and 0x. You can analyze DEX markets, build charts, and analytics using DEX trade data. Bitquery is a collection of software products that can parse, index and store blockchain data in a unified manner. Market analytics for specific projects and industry patterns in different blockchain networks. Money flow analysis to assist in blockchain investigation and compliance. Find origin and destination funds. Analytics and APIs for Decentralized Finance (DeFi), protocols. Blockchain development through scientific research.

The most popular way to purchase, hold, and use cryptocurrency. The most powerful and simple-to-use cryptocurrency wallet. In minutes, you can go from zero to cryptocurrency. You just need to verify your ID and add a payment method before you can buy cryptocurrencies. Only you have access to your funds. Not even us. Deposit cryptocurrencies into an interest account to see how they grow. Convert your cryptocurrencies into cash. Instantly exchange your cryptocurrency for any other currency. Chat with customer service anytime, anywhere on Exchange. Web Socket and REST APIs are available for each type professional agent. You can confirm transactions, analyze the market, and learn more about cryptocurrency. We have powered exchanges, data analysts and enthusiasts, among other things. From Hashrate to blocking details and mining information, we have it all. Get the most recent prices and charts, along with key market signals.

Your customers can buy and sell cryptocurrency, send and receive assets on the blockchain, and earn crypto rewards. Zero Hash is an institution settlement utility for digital asset space. Zero Hash offers a range of post-trade settlement services that are institutional-grade and can be used to calculate trade obligations and deliver assets for a growing number of tradable products. This document will provide a clear path for a new customer, platform, or custodian to integrate with the Zero Hash ecosystem. Zero Hash's guiding principle is "maximum flexibility." This document will provide you with all the API endpoints and connectivity options available. It also includes suggested implementations to help guide you in deciding which parameters are most relevant to your use case.

Crypto APIs is a blockchain infrastructure provider that makes developing and managing Web 3 solutions easy and efficient. The infrastructure suite includes The company's product suite includes Blockchain Data, Blockchain Events, Blockchain Automations, Blockchain Tools, Non-Custodial Wallets and Market Data. Developers access all tools with one seamless integration. They can deploy over 100 endpoints from a single provider by using just one SDK. The company's REST APIs work with multiple blockchain mainnets and testnets. They are suitable for building diverse solutions, including digital banks, exchanges, wallets, custodians, lending products, and more. Companies like Chainlink, Ledger, Nexo, PayPal, and Prime Trust are already using Crypto APIs. Customers love Crypto APIs' white glove support and robust features, calling Crypto APIs' products "reliable, effective, and fast". The company is ISO/IEC 27001:2013 certified - it incorporates advanced encryption and the highest security standards to protect customers' data and digital assets.

Blockchair API provides developers, researchers, and businesses with access to data contained in 17 blockchains. The API supports numerous analytical queries like filtering, sorting, and aggregating blockchain data with high uptime. Blockchair is the first blockchain explorer which incorporates a multitude of different blockchains into one search engine. Unlike most blockchain explorers and cryptocurrency companies, Blockchair does not collect personal data, nor does Blockchair share it with third-party analytics companies and ad networks.

Anyblock's Software-as-a-Service (SaaS) provides Blockchain JSON-RPC Access for Bitcoin, Ethereum & more. Our blockchain API is fast and reliable. Queries take less than 100 milliseconds. Multiple nodes are load-balanced. Clients for Ethereum: Parity/OpenEthereum & Besu Amazing support. Fast and personal responses. Technical advice with code samples. Extensive documentation: API, tutorials, FAQs, ...

You can create blockchain and digital asset solutions without having to start from scratch. Start small and quickly move to production. You can choose from popular cloud properties, hybrid deployment options, geographical regions, protocols, consensus mechanism, and many other options all at the touch of a button. It makes blockchain an easy-to-use endpoint that allows you to accelerate the development and deployment your d'Apps. An intuitive interface that allows you to manage all aspects of your blockchain networks and environments. Automated tools and workflows make it easy to scale your business network and onboard new members. Each member is responsible for managing their own key materials, data, and nodes. You can easily scale your network using single proxy operator or distributed network ownership. Manage your networks, memberships, users, and environments.

OnFinality is a platform for blockchain infrastructure that saves web3 builders their time and makes their lives simpler. OnFinality provides API endpoints that are scalable for the largest blockchain networks. It empowers developers to automate testing, deployment, scaling, and monitoring their own blockchain nodes within minutes. OnFinality has processed over 300 billion RPC requests to date across 70 networks, including Polkadot and Ethereum, Moonbeam and Astar. It is constantly expanding these mission-critical services to developers so they can build the decentralised future faster! OnFinality helps you to be smarter.

Ever Platform offers developers products, APIs and tools that help them build, test and run applications on TVM compatible networks (Everscale (TON), Venom (Gosh), etc.). Rich and high-availability APIs for TVM Blockchains. Small to large businesses that don't want their infrastructure managed. Enterprises, heavy-load DApps and enterprises who want the best API performance. Evercloud is designed for those who wish to maintain and run their own node, with basic API. It's for DApp developers, contract testers and DApp developers who want to test local before testing on real networks. A robust GraphQL-based API shared by all products allows for a smooth transition from local testing to production. Evercloud provides TVM developers with scalable GraphQL endpoints. Create Evercloud project to start your communication with Blockchain.

Infura's top-class infrastructure will ensure that your decentralized application scales to your users' needs. Our instant access APIs allow you to connect your app instantly. We support JSONRPC over HTTPS and WebSocket interfaces. We also provide subscription-based connections. You can start using Infura from a single URL. Our 24/7 team of experts can handle any network changes or upgrades so that you can concentrate on building your applications. We believe in a future that is powered by decentralized protocols and networks. So developers can spend their time creating and building, we provide the infrastructure necessary to make this happen. Our Infura dashboard allows you to access valuable insights, add apps, and much more. Do you have questions or need help? You can find answers in our active community, current status page, or directly in our expanding library.

Coinpath®, a set of APIs for blockchain money tracing, is based on a complex mathematical algorithm that can perform complex calculations among blockchain addresses to show money flow. Coinpath®, which uses machine learning and heuristics to determine clusters, transaction flows, and account balances, uses heuristics. Our Coinpath®, APIs are the backbone for multiple blockchain investigation and compliance options. The Coinpath®, a set API endpoints that can trace money to any source or destination, create money flow graphs and make aggregate transfers to addresses, is called Coinpath®. You can find the source and destination of money, as well as the amount and flow path. Coinpath®, which analyzes wallet transactions and addresses, creates a clear data graph of money flow and shows the path from funds' origins to various crypto services and VASPs. Our blockchain forensics technology allows customers to monitor their deposits and withdraws for "tainted coins" that are involved in money laundering, terrorist financing, etc.

One line of code can supercharge your development with the most powerful blockchain developer platform in the world, used by 70% of the top Ethereum apps. The most popular Ethereum API is Alchemy Supernode. All the functionality of a node is available, including JSON RPC support. However, you get the supercharged reliability and data correctness required to run top-level applications on the blockchain. Alchemy Build is an in-house suite that provides all the tools you need to quickly prototype, debug and ship products. You can instantly search through millions of historical requests, view transactions in real-time, make JSON/RPC calls from the dashboard, and scan for recent errors and requests. Alchemy Monitor provides a comprehensive suite dashboards and alerts to monitor app health, performance, user behavior, and other factors. Instantly check the health of all your apps, gain user insights without compromising privacy and get automated alerts.