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.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score75
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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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
- Sign up with the provider to get an API key.
- 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.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.