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About API3

API3, initiated in December 2020, aims to revolutionize decentralized applications (DApps) by developing decentralized APIs (dAPIs) using Airnode, a pioneering decentralized network of first-party oracles. Essentially, dAPIs offer services akin to traditional APIs but are engineered to facilitate direct interaction and provide off-chain data, like price information. Traditional APIs have long been integral to developing centralized software and applications. The core goal of API3 is to establish dAPIs, powered by Airnode technology, as the new norm for decentralized app development.

What Problems API3 Solves

In the process of creating software or applications, developers frequently utilize pre-existing APIs to integrate specific data sets or services into their projects, bypassing the need to start from the ground up. For instance, a weather application on your smartphone might use an API to access up-to-date information about current weather conditions. APIs serve as essential components for a multitude of contemporary software and applications we interact with daily.

However, an issue has emerged that API3 is addressing: the majority of APIs were designed within the context of a centralized system, encompassing applications, data, and financial services, which does not seamlessly align with the blockchain and decentralized application (dApp) ecosystem. API3 is dedicated to bridging this gap, ensuring that these traditional APIs can adapt to the decentralized frameworks of Web 3.0 without placing excessive demands on the original API creators or dApp developers.

How Does API3 Work?

API3 functions through several fundamental mechanisms:

1. Decentralized APIs (dAPIs): API3 pioneers the concept of dAPIs, enabling data providers to seamlessly integrate their services with the blockchain. This approach allows them to retain complete authority over their data feeds.

2. Direct Connection: API3 facilitates a direct linkage between APIs and decentralized applications (dApps), eliminating the intermediaries. This strategy aims to lower expenses and enhance operational efficiency.

3. DAO Management: The governance of API3 is vested in a decentralized autonomous organization (DAO), which democratizes decision-making by involving all stakeholders in the process.

4. Enhanced Data Feed Security: API3 places a strong emphasis on the protection of data feeds, incorporating decentralized governance and consensus methodologies to safeguard against any potential tampering.

API3 Key Features

Decentralized API (dAPI)

Decentralized APIs, or dAPIs, are governed by the API3 DAO and offer a bridge between smart contracts and real-world data by transmitting information directly to decentralized applications (DApps). These services allow DApp owners to pay for API usage with their preferred cryptocurrency, facilitating transparent transactions via the API3 Market. API providers operate their own automated oracle nodes, known as Airnodes, enabling them to directly earn from the API3 DAO.

The use of primary Web API providers as data sources for DApps mitigates the risks associated with data manipulation and the dependence on rent-seeking intermediaries, which is a common issue in third-party oracle solutions like Chainlink.

API3 provides an added layer of security for DApps by offering coverage against potential losses resulting from dAPI malfunctions, making it a reliable option for DApp developers. Moreover, API3’s data feeds are enhanced by Oracle Extractable Value (OEV) extraction, allowing for precise and cost-effective data updates. This mechanism also repurposes OEV to benefit DApps financially.

Airnode and First-Party Oracles

At the heart of API3 are first-party oracles, powered by data providers’ own oracle nodes. This setup ensures data integrity through on-chain signatures by API providers, offering:

  1. Enhanced security without intermediaries prone to oracle attacks.
  2. Increased cost-effectiveness by eliminating middleman fees and reducing overall oracle expenses, resulting in significant gas cost savings.
  3. Over 50% efficiency in gas costs compared to third-party oracles like Chainlink.
  4. Transparency regarding the data’s source and the degree of decentralization.
  5. Resolution of legal complexities around third-party data licensing, as providers retain all revenue.

Airnode simplifies for API providers the task of connecting their services with DApps, requiring no blockchain expertise and minimal maintenance. This lowers entry barriers for providers accustomed to Web 2.0, with free initial use and subsequent costs based on service-generated revenue. Providers also have the flexibility to accept payment in cryptocurrency or fiat currency.

Additionally, API3 introduces API3 QRNG, a unique oracle solution facilitating the generation of truly random numbers by smart contracts. This service, available at no cost beyond gas fees, is aimed at enhancing security, fairness, and user engagement within the Web3 ecosystem.

API3 Token

The API3 token serves as the foundational utility token within the API3 ecosystem, playing a pivotal role in facilitating payments and governing the community through the API3 DAO. DApps leveraging the dAPI network remit subscription fees in API3 tokens, while API providers utilizing Airnode have the option to be compensated in fiat currency via an API3 DAO grant if they prefer not to deal with cryptocurrency directly.

Furthermore, the API3 token grants community members the opportunity to engage in governance activities by staking their tokens in the API3 insurance staking contract. This engagement rewards stakeholders with staking and inflationary rewards, offering a financial incentive to contribute to the decentralized network’s growth and enhancement of its value.

API3 vs. Chainlink

API3 aims to transform the landscape of oracle solutions for web3, proposing a foundational shift away from existing models towards what its creators believe should have been the original approach. Heikki Vänttinen, a co-founder of API3, views it as an evolutionary step forward in oracle technology, addressing areas where Chainlink, a leading decentralized network of third-party oracles, may lack.

Chainlink facilitates the aggregation of off-chain data to minimize the cost of on-chain transactions, delivering a single-value data feed on-chain for smart contracts. This approach is effective for consolidating data such as commodity prices or weather information.

Contrastingly, Chainlink, as a third-party oracle network, positions itself as an intermediary between blockchains and APIs, diverging from the core principles of blockchain technology by potentially increasing costs and security vulnerabilities. On the other hand, API3’s first-party oracle network aims to lower expenses and mitigate security concerns by eliminating redundant intermediaries.

While Chainlink and similar third-party oracles often obscure the origins of their data sources, limiting accountability, API3 emphasizes transparency in data sourcing. It encourages and rewards data providers for integrating their services with the blockchain, fostering greater trust between web3 applications and API providers.

API3 not only offers transparency but also benefits API providers directly by making them central to its ecosystem. Through a data marketplace, direct rewards, and an automated system, it ensures providers are adequately compensated for their contributions. This model positions API3 as a promising, secure, and cost-effective oracle solution for decentralized applications (DApps), setting a new standard for the integration of real-world data with blockchain technology.

Future Outlook and Potential

As adoption of decentralized finance and blockchain-based products accelerates, the need for secure and reliable API infrastructure will continue growing exponentially. The API3 platform is uniquely positioned to become a fundamental plumbing layer enabling Web3 applications.

With continued ecosystem development, API3 aims to establish the standard for blockchain-connected APIs. API3 provides a scalable, interoperable foundation unlocking integration across fragmented networks and protocols. Integrating real-world data expands possibilities for decentralized applications. If execution continues, API3 could become ubiquitous infrastructure for the next generation of crypto products and services.


API3 was founded in 2019 by Heikki Vänttinen, Burak Benligiray, and Saša Milić. The founders have backgrounds spanning decentralized tech, API architecture, and finance. Their varied expertise helps drive API3’s mission.

API3 is primarily used to democratize access to data by eliminating third-party intermediaries. This approach not only reduces costs associated with data fetching but also significantly mitigates the risk of manipulation, thus ensuring the data’s authenticity and reliability. By empowering data providers with the tools to directly integrate their services with blockchain networks, API3 plays a crucial role in the development of more secure, efficient, and scalable dApps.

API3 is tradable on major exchanges including Binance, OKEx, and Huobi Global. You can purchase API3 tokens from any exchange where it is listed using Bitcoin or Ethereum. Always practice caution when buying cryptocurrencies.

When it comes to the safe storage of API3 tokens, utilizing a reliable cold wallet can offer the security needed for long-term holding. The IronWallet cold mobile wallet stands out as a dependable option for storing API3 tokens. By keeping the tokens offline, it significantly reduces the risk of cyber theft and unauthorized access, thus ensuring the safety of your assets.

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