For developers building on Circle products, post Q&A, best practices & SDK/API insights. Use Tags

Circle Products & Developer Toolings

Looking for a head start? We've been publishing a growing collection of open-source sample applications that demonstrate real-world use cases powered by USDC, Arc, Circle Wallets, Gateway, and related developer tools. These projects are designed to be forked, customized, and used as starting points for your own applications.

Below is a quick overview of what each sample app is for…

https://github.com/circlefin/arc-nanopayments

Demonstrate gasless USDC nanopayments using 

 on Arc. A LangChain agent acts as the buyer, autonomously paying for paywalled resources, while a Next.js web app acts as the seller, exposing x402-protected endpoints and providing a seller dashboard to monitor payments and withdraw earnings.

Circle Gateway batches many signed offchain authorizations into a single onchain settlement, enabling economically viable sub-cent payments.

https://github.com/circlefin/arc-p2p-payments

Modern peer-to-peer payment system. This sample application uses Next.js, Supabase, and Circle Modular Wallets with Passkey security to demonstrate a seamless, gasless P2P payment system on the Arc Network.

Modern multi-chain treasury management system. This sample application uses Next.js, Supabase, and Circle Developer Controlled Wallets, Circle Gateway and Circle Bridge Kit with Forwarding Service to demonstrate a multi-chain treasury management system with bridge capabilities.

Automate escrow-backed freelance agreements with AI-powered work validation using USDC on Arc testnet. This sample application uses Next.js, Supabase, Circle Developer Controlled Wallets, and OpenAI to demonstrate an end-to-end escrow workflow — from contract creation and deposit, through AI-validated deliverable submission, to fund release or refund.

https://github.com/circlefin/arc-multichain-wallet

A sample application demonstrating how to build optimal USDC interoperability UX for wallets using Arc and Circle Gateway. This app showcases unified balance management, deposits, and cross-chain transfers across multiple EVM chains using Next.js and Supabase.

https://github.com/circlefin/arc-commerce

Integrate USDC as a payment method for purchasing credits on Arc. This sample application uses Next.js, Supabase, and Circle Developer Controlled Wallets to demonstrate a credit purchase flow with USDC payments on Arc testnet.

Share what you've built with these sample apps below!

🚀 Arc Sample App Directory

Home

Forum

Events

Content

Courses

Collections

People

Contributors

Albums

Groups

Chat

Channels

Not being used

Help

Join the global network of builders developing the Economic OS for the internet. We’re reimagining how value moves, creating the tools that make the economy work for everyone.

Arc House

Profession

Join a global network of builders developing the Economic OS for the internet. We’re reimagining how value moves, creating the tools that make that economy work for everyone. 

Arc House | Build the economic OS for the internet with us

Copyright

Terms of Service

Privacy

Code of Conduct

Your Privacy Choices

It looks like there is no account associated with the email you provided. The event is for members only. Please complete the application to join our community first.

Thank you for your interest in joining us

Thanks for your interest in joining the event. However, your account is still pending. Once it's approved, you'll be able to register for the event. Please contact us via noreply@arc.network if you need support.

Pending Approval

Login to the The Arc Community Hub community to connect with others, attend community events, and more!

Login or Sign Up for even more

To unlock all parts of the community complete your profile using verifiable and real information.

Hey, complete your profile

It looks like there is no account associated with the email you provided. Please complete the application to join our community.

Thank you for your interest in joining Arc House.

Thanks for your interest in joining Arc House. We will review your request shortly and email you once it's approved. Meanwhile, please feel free to contact us via noreply@arc.network for any questions.

Accounts are unapproved when profile information cannot be verified or when activity patterns indicate spam, inorganic participation, or behavior that undermines trust in the program.

To strengthen your profile for future consideration, sign in with a verified LinkedIn account, use real and current profile information, and participate constructively in other community spaces.

Commercial customers should raise concerns through their support channel.

https://www.arc.network/community-guidelines