Cryptocurrency — entry 003 of 53
1inch
1inch's Business developer portal exposes 13+ REST APIs covering Classic, Fusion (intent-based), and Fusion+ (cross-chain) swap execution plus spot pricing, orderbook, token metadata, portfolio, transaction-history, gas-price, and Web3 RPC endpoints across 16 networks including Ethereum, Solana, and Base under a single key. Access moved off the old 1inch.io and portal.1inch.dev endpoints onto business.1inch.com, with subscription-based pricing that starts on a free trial tier.
GreatAPIs Score
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<a href="https://greatapis.com/api/1inch/"><img src="https://greatapis.com/badge/1inch.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Get a key at the provider
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
Free: 60 req/min & 100,000 calls/mo; Startup: 10 req/s & 1,000,000 calls/mo; Professional: 20 req/s & 3,000,000 calls/mo; Business: 40 req/s & 7,000,000 calls/mo