Best Crypto APIs for Freelancers

Since 2017, we’ve helped over 400 organizations—ranging from exchanges to financial institutions—manage more than $110B in digital assets. Our services include robust support for staking, blockchain nodes, APIs, DeFi, and MPC wallets, all backed by a globally resilient architecture built for security, compliance, and scale.

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

Oversee your decentralized finance (DeFi) assets and obligations through a streamlined platform. Unlock exclusive opportunities in the realm of open finance with Zapper, the premier destination for DeFi enthusiasts. Our goal is to enhance the growth of DeFi by simplifying the process of accessing unique investment opportunities for retail investors, asset managers, and innovators globally. Gain a comprehensive view of all your DeFi holdings and debts. Explore distinct investment avenues across an ever-growing array of DeFi platforms, which not only saves time but also reduces transaction costs. Effortlessly adjust your portfolio among different DeFi platforms or generate your own investment opportunities. Connect with established brands that your audience frequently utilizes in the DeFi space. Evaluate user behavior to identify and prioritize the next strategies for integration. Additionally, seamlessly incorporate these integrations into your applications, emails, or websites for a more cohesive user experience. This comprehensive approach empowers users to maximize their engagement and effectiveness in the DeFi landscape.

CoinGecko delivers a comprehensive analysis of the cryptocurrency market's fundamentals. Beyond monitoring price, trading volume, and market cap, it also assesses community expansion, open-source development efforts, significant events, and on-chain data. Additionally, CoinGecko features tools designed for crypto portfolio management, enabling traders to effectively oversee their cryptocurrency and DeFi investments. Furthermore, these resources help users make informed decisions and optimize their trading strategies.

Etherscan stands out as the premier Blockchain Explorer, search tool, API, and analytics platform specifically designed for Ethereum, which is a decentralized platform for smart contracts. Since its establishment in 2015, it has been among the first and most enduring independent projects centered on Ethereum and its ecosystem, aiming to ensure fair access to blockchain information for all users. This commitment to transparency and accessibility has solidified its reputation within the cryptocurrency community.

BlockSpan serves as an NFT API platform tailored for software companies engaged in blockchain development. By consolidating information from various blockchain networks, we offer a streamlined API that enables NFT developers to access real-time data such as token prices, ownership status, and metadata, including pre-cached images. Transitioning between multiple blockchains or utilizing different chains doesn't have to be a cumbersome process; instead of laboriously scraping block logs, you can effortlessly implement a straightforward REST API integration. Our API provides more than just transactional information; it also delivers details on pricing, current ownership, and extensive metadata. Currently, our platform supports Ethereum, Polygon, Arbitrum, and Optimism, with additional blockchain integrations on the horizon. We have also created comprehensive documentation for every endpoint, which features an interactive API console to enhance usability. Moreover, our NFT API is designed to include token metadata and cached image URLs, effectively reducing the need for multiple API and IPFS calls to gather that information. With such functionality, developers can focus on building innovative applications without the hassle of backend complexities.

The data terminal is highly regarded by top hedge funds, venture capital firms, OTC desks, proprietary trading companies, market makers, and institutional experts. It offers the quickest and most extensive news updates in the cryptocurrency sector. Users benefit from coverage that spans thousands of primary and secondary sources, alongside real-time spot market updates from leading crypto exchanges. The platform provides detailed insights into open interest, funding, and futures data. Additionally, it features four years of sentiment analysis based on Twitter’s Firehose, enabling users to track trends effectively. There is also quantified data from TikTok and YouTube that helps identify retail trends ahead of market movements. Cross-chain comparative Total Value Locked (TVL) metrics are available, as well as information on holdings, ownership distribution, and whale activities. The terminal allows for real-time tracking of newly minted projects and keeps a close watch on NFT market trends and blue-chip initiatives. It compiles data on funding, web traffic, news, and team expansion, while also monitoring custodians, exchanges, service providers, miners, and funds closely. Users receive direct updates from over five hundred projects and exchanges, ensuring they remain at the forefront of market developments. This comprehensive suite of tools and insights empowers users to make informed decisions in a rapidly evolving landscape.