Build connected smart contracts with world-class APIs.

Airnode is API3's data provider operated Web3 API gateway, which allows smart contracts to call off-chain APIs and receive data from them to the blockchain, without any third-party middlemen.

Featured APIs

Celitech Bee API

Celitech wireless eSIM API enables your travel-related business to offer cellular data eSIMs and better engag...

Crypto API

OptionRoom API allows users to create and participate in event derivatives that are pegged to real world outc...

Quadency Unified API

Get market data such as live and historical prices, trades and order books, fetch your connected accounts and...

PWP Leeway

PWP Leeway API provides access to comprehensive data from more than 50 exchanges worldwide. We offer fundamen...

Paradigm API

Paradigm is a multidimensional crypto data API. Our unified platform provides single endpoint access to datas...

Catallact API

The Catallact API delivers On-chain analytics, Exchange data, Derivative metrics, DeFi tracking, and Original...

Bird API

Bird.money offers plug and play analytics products for web 3.0 platforms.

Asteria API

The Asteria Option Pricing API enables investors to get option pricing and quantity quotations and execute in...

Melodie API

Melodie provides end users with music search, licensing, and more with a wide selection of high-quality, pre-...

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Address Verification API

Byteplant's postal Address Verification service allows you to validate and correct postal addresses from 240 ...

INFRD Insurance API

Artivatic’s AI- Native SaaS Solutions for insurance & health services as modular building blocks powered by b...

Identity Authentication API

Use the Authenticating APIs, mobile SDK or the hosted, embeddable UI for worldwide identity authentication, K...

The Authoritas SERP API

The Authoritas Keyword Ranking API allows you to make multiple simultaneous keyword requests to any major sea...

Benzinga Market News API

The Benzinga API delivers actionable Stock & Crypto data news to users.

SMS Gateway API

BulkSMS API allows you to easily SMS-enable your website, application, or customer relationship management pl...