Multi-chain blockchain RPC nodes (Ethereum, Solana and 75+ networks).
SwiftNodes API is a free Blockchain API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Production-grade RPC endpoints for EVM and multi-chain. Flat-rate pricing, pay with crypto or card, instant setup. No KYC required.
Details from swiftnodes.io.

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The SwiftNodes API is provided by SwiftNodes (swiftnodes.io). Production-grade RPC endpoints for EVM and multi-chain. Flat-rate pricing, pay with crypto or card, instant setup. No KYC required.
Yes. The SwiftNodes API is listed in the Blockchain category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The SwiftNodes API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The SwiftNodes API supports CORS, so front-end JavaScript can call it directly.
Yes. The SwiftNodes API is served over HTTPS, so it's safe to use in production.