​
Overview

Use subnames to onboard users with a name (not an address), improve payment safety, and provide cross-app identity.

​
Common use cases

  • Wallet UX: branded usernames for every wallet
  • Payments: safer send/receive with human-readable names
  • L2/Platform identity: ecosystem-wide names (e.g., user.chain.eth)
  • Communities: names for members or holders
  • AI agents: verifiable identities for agents and services

​
Choose a model

  • Offchain: gasless, instant, scalable issuance via API/SDK (default)
  • L2: NFT ownership, lower cost than L1, portable across apps
  • L1: premium, low-volume scenarios; highest decentralization

​
Build paths

Offchain subnames

Ship fast via API/SDK

L2 subnames

Mint as NFTs on Base/Optimism

SDKs

TypeScript SDKs and examples