
Interaction with the Cardano mainnet and several testnets.
blockfrost Cardano API is a free Cryptocurrency API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
We provide an instant and scalable Cardano API for free.
Details from blockfrost.io.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
On-chain lottery, draw history, jackpot and advertising endpoints
Solana USDC x402 pay-per-call tools for agents: SPL mint info, token brief, text summarize, Piper TTS, brand feedback
Bitcoin blockchain data, fees, mempool, SEC insider trades, Reddit sentiment. x402 micropayments for paid endpoints.
The blockfrost Cardano API is provided by Blockfrost.io (blockfrost.io). We provide an instant and scalable Cardano API for free.
Yes. The blockfrost Cardano API is listed in the Cryptocurrency 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 blockfrost Cardano API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the blockfrost Cardano API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The blockfrost Cardano API is served over HTTPS, so it's safe to use in production.