Polkadot API

Polkadot is a layer-0 multichain network launched in 2020 by Ethereum co-founder Gavin Wood. Its central relay chain secures many parallel chains (parachains) and lets them interoperate, enabling a scalable, connected ecosystem of specialized blockchains.

Networks Mainnet, Testnet (Westend)
Released 2020
Consensus Nominated Proof of Stake
Smart contracts Via parachains
Block time ~6 seconds
Smart contract language(s) supported ink! (Rust), Solidity (on parachains)
Get access to Polkadot APIs using our unified endpoints. Get blockchain data, blockchain events, automations and more.

Bitcoin
Ethereum
XRP Ledger
Ethereum Classic
Bitcoin Cash
Dash
Litecoin
Dogecoin
Zilliqa
View all supported

The Polkadot API — build without running a node

Access Polkadot blockchain data through one unified REST API: transaction and address data, balances, block data, and real-time webhooks for on-chain events — with no Polkadot node to run and maintain. Start free and scale as you grow.

Blockchain data

Read Polkadot transactions, addresses, balances, UTXOs, and block data through one REST API.

Real-time webhooks

Subscribe to on-chain events — incoming and outgoing transactions, confirmations, and mined blocks.

No node to run

Skip the infrastructure — managed, always-synced access with no node to operate or maintain.

View the API docs Start building free

Building a full wallet? Explore Wallet as a Service.

Need prices too? See the crypto price API, or run your own Polkadot RPC nodes.

A network of connected chains

Polkadot's relay chain provides shared security and cross-chain messaging for parachains, each free to optimize for its own use case. Its nominated proof-of-stake consensus and on-chain governance let the network upgrade without hard forks while staying interoperable.