Arc

Arc Public Testnet is now live. Open to developers and enterprises globally, Arc is the Economic OS for the internet that unites programmable money and onchain innovation with real-world economic activity. Start building: docs.arc.network Learn more: arc.network/blog/circle-la…

Arc Hackathon Spotlight: Crumb Gasless USDC nanopayments with settlement on Arc. Join @samconnerone and Taylor Ferran live on April 29 at 10:00 AM ET for a walkthrough of the build: → P2P payments → QR pay → Merchant checkout → Batched settlement → The merchant API and widget behind it RSVP: community.arc.network/home/events/ar…

69 teams built on Arc during ETHGlobal Cannes. What stood out: → 98% built agentic economy applications → 40% used Circle Nanopayments for sub-cent transactions → 34% implemented crosschain flows with CCTP → 67% of winners built core functionality around nanopayments Across the hackathon, builders used Arc as the settlement layer for agent-driven finance, crosschain coordination, pay-per-use infrastructure, and programmable creator economics. Read the full recap: arc.network/blog/meet-the-…

hello architects, new post in Architect forum 👀 we'd love your opinion on what to call a new ai tool we're developing for you @arc

Big reminder for all members of the Architects program. If you've received your official invite, please visit the forum and submit your entry for the opportunity to be spotlighted using the provided form!! If you've haven't received your email yet, hang tight and you will be included in the next round of invites happening in the coming weeks

I’m An Architect (Tier 2). Arc House isn’t just a place to sit back and watch, it’s where you get involved. You’ll connect with builders from all over the world, share ideas, sharpen your skills, and get noticed just by showing up consistently. If you’re serious about Web3 and want real connections and real opportunities, it’s definitely worth being part of. So what are you waiting for? Why haven’t you joined the @arc House yet? Join Arc house now arc.network/blog/introduci… Big thanks to the @arc team for giving us this opportunity. @silencexlm @samconnerone

Hosting an Arcshop on 28 Apr 10am EST on a deep-dive into Gateway and how to build with it. Excited for the opportunity to share what I know with folks who are interested. community.arc.network/home/events/ar…

At Arc Studio, @MerlinEgalite of @Morpho put it simply: “Stablecoins are one of the greatest improvements blockchain has brought to the public.” Stablecoins gave people portable checking accounts. Arc + Morpho points to the next step: onchain savings with just a wallet and an internet connection.

Have you ever been frustrated using a Web3 wallet having to figure out your USDC across 5-6 different chains, needing to bridge and swap and re-balance constantly, with slippage and fees, and confusing UX? Have you ever thought "how will the normies every figure this out?" We've thought about this too, A LOT. And today we're launching the new Unified Balance Kit, and simple developer tool that allows wallet builders to offer their users a single unified USDC balance with the ability to perform nearly instant (<500ms) crosschain sends to the most popular chains. Users get a simple UX that makes sense --- a single USDC balance, and no need to think about, understand or deal with the complexity of crosschain interactions. These small steps are what will bring USDC into mass adoption within mainstream app and wallet experiences. Available to start building with today.

Today, we are introducing the Unified Balance Kit! It is a TypeScript SDK within App Kits that is built on top of Circle Gateway, a protocol that enables a unified USDC balance across supported blockchains and handles the underlying crosschain movement of funds when spending. Instead of stitching together different routing logics, developers can use this SDK to deposit, view, estimate, and spend from a unified USDC balance. Try it out yourself!

Supporting USDC flows across chains just got a lot simpler. Unified Balance Kit gives developers one integration surface for chain-abstracted USDC balances, with: → Instant crosschain USDC access in under 500 ms → Simpler treasury operations with less reconciliation overhead → Smart defaults that select cost-effective source chains automatically Unified Balance Kit is powered by Circle Gateway, inheriting its core capabilities while remaining extensible to third-party services. Learn more: arc.network/blog/unified-b…

Been watching what builders are doing at the agentic economy hackathon and honestly some of these use cases weren't on our radar at all Nanopayment insurance? Pay-per-query AI? This is what happens when you ship infra and get out of the way

Agentic Economy on @arc Hackathon: Day 1. Watch @GoogleDeepMind dropping extra $5K into the Prize Pool. Power up apps built with @BuildOnCircle Nanopayments with @GeminiApp & GoogleAIStudio. Settle value on Arc in USDC. Let’s turn up the heat.

Most cross-border payments still move through a long chain of institutions before they reach their destination. Each intermediary helps the system function. But each intermediary also adds delay. Stablecoin settlement gives institutions a more direct way to coordinate. Shared infrastructure reduces complexity in how value moves across borders and improves the speed of settlement. The architecture becomes simpler, more connected, and easier to scale.

Did you attend today's Office Hours on the @arc Discord? You might spot yourself in the image below. Office Hours, hosted every Tuesday by @silencexlm and @0xmikef, is steadily growing. It is a dedicated event where only genuine community developers can share demos of their meaningful, long-term projects. If you are a committed developer, please join the next Office Hours on Tuesday. Next Office Hours - community.arc.network/home/events/ar…

maybe a good @arc house night

App Kit: From 200 Lines to 6 on @Arc I published a deep dive on Arc House breaking down what App Kit actually does under the hood, and how it compresses a full CCTP integration into a single function call. Even if you're new to cross-chain, you’ll understand how the whole flow works after this. I built a bridge from scratch first. Raw CCTP. 200+ lines - contract interactions, attestation polling, retry logic, gas estimation across chains. Then I rebuilt it with App Kit. 6 lines. So I went deeper - into how kit.bridge() abstracts the full burn → attest → mint flow, how the adapter system works across EVM and Solana, FAST vs SLOW transfer modes, the Forwarding Service, and how we integrated it across 17 testnet chains in XyloNet. Most people use SDKs without knowing what’s happening underneath. I wanted to break that down properly. If you're building on Arc or evaluating App Kit for cross-chain USDC movement, this one's for you. Read the full post here 👇 community.arc.network/home/forum/boa…

Post-quantum readiness is becoming part of the baseline for financial infrastructure built to last. Long-term cryptographic security requires infrastructure that institutions, developers, and operators can adopt without waiting for a forced transition. Arc is designed to build for that from the start.

Day 2 of Agentic Economy on @arc. If you're hacking and need data — Twitter, financial, search, scholar, YouTube — AIsa has 100+ production endpoints accessible via @circle nanopayments. If you wish to get a first-hand feel for how lightning-fast nanopayments work on @arc, give it a spin. Here's how to get started in under 5 minutes. Watch the demo 👇 @BuildOnCircle @lablabai

ICYMI Our very own @TxnSheng, our DevRel APAC Lead, sat down for an in-depth office hrs and walkthrough of our App Kits. Make sure to save, share, and watch it over...and over...until memorized. Good stuff!!! community.arc.network/home/events/ap…

Cross-border payments look different when money moves instantly. Consumer remittances, tokenized invoices, and programmatic payout systems all become more usable.