Arbitrum docs
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Reference

Chain parameters, contract addresses, RPC providers, and developer tooling.

Reference material for building on Arbitrum: chain parameters, contract addresses, RPC endpoints and providers, monitoring tools, block explorers, and web3 libraries.

This section is being ported. The individual reference pages will land here as content is migrated.

NodeInterface reference

Complete API reference for Arbitrum's NodeInterface contract methods, including gas estimation, retryable ticket helpers, and outbox proof construction. Available at address 0xc8 via RPC calls only.

Chain parameters

Reference of key system parameters for Arbitrum One and Arbitrum Nova, including chain IDs, block times, gas settings, and confirmation thresholds for public Arbitrum chains.