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@devacc8 devacc8 commented Jan 17, 2026

Summary

Added comprehensive documentation about supported chains and their feature availability to the README files.

Changes

  • Added new "Supported Chains" section to both root and package README
  • Documented full support for Base and Base Sepolia (all features)
  • Clarified partial support for Ethereum, Optimism, and other EVM chains
  • Added feature availability matrix showing what works on each chain

Why This Matters

Developers currently have no clear documentation about which chains are officially supported and what features work on each network. This leads to confusion and unexpected behavior when trying to use OnchainKit on unsupported chains.

Feature Matrix Added

Feature Base Base Sepolia Ethereum Other EVM
Wallet components
Transaction components
Paymaster (gas sponsorship)
CDP Node RPC
Swap API
EAS Attestations
Identity (ENS/Basenames)

Closes #2575

- Added 'Supported Chains' section explaining which networks work with OnchainKit
- Documented full support for Base and Base Sepolia
- Clarified partial support for Ethereum, Optimism, and other EVM chains
- Added feature availability matrix showing what works on each chain
- Helps developers understand network-specific limitations upfront

Closes coinbase#2575
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vercel bot commented Jan 17, 2026

@devacc8 is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

@cb-heimdall
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Documentation Request: Clarify supported chains and network assumptions in OnchainKit

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