Flux (FLUX) API Documentation

Flux

Flux (FLUX) is a proof-of-work blockchain underlying the Flux decentralized compute ecosystem, which reported 6,623 FluxNodes across 67 countries as of May 2026. Transactions use UTXO-style blockchain primitives, while full nodes validate blocks and transactions and maintain chain data, the mempool, and the current set of spendable outputs. Because Flux uses familiar UTXO primitives, integrations center on blocks, raw transactions, addresses, scripts, and outputs even as the broader system adds FluxNode and compute-network state.

Flux API Methods and Endpoints

NOWNodes exposes Flux's interface, plus a few others, depending on what your integration needs: JSON-RPC for reading chain state and broadcasting transactions, and Blockbook for indexed address, balance, transaction, and block lookups. Archive mode extends any of these to historical states and data beyond standard retention.

Browse the interfaces below for endpoint details, request parameters, response formats, and integration examples. Create an API key, select Mainnet or Testnet, choose the required interface, and start sending requests from your application.

Weighing Flux RPC providers against each other? Read the comparison guide on our blog — this page stays focused on integration reference.