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More assets. Familiar tools. One integrated stack.
CCTP and Bridge Kit, now support expanded multi-asset workflows, with Arc as a Day 1 destination for USDC, EURC, and cirBTC on supported routes.
Interop on Arc is here.
A new integrated stack for builders creating crosschain applications on Arc.
Build with:
â Move supported Circle-issued assets natively with CCTP
â Bring third-party tokens crosschain through wrapping
â Launch new multichain assets with CTS
â Manage unified crosschain balances with Gateway
Crosschain liquidity, without the complexity.
arc.io/blog/introducing-inteâŚ
Applications settle, post collateral, and show balances on the chain where they actually run. If your ERC-20 only lives where you minted it, every other venue needs a one-off bridge or wrapped copy.
With CCTP on Arc you get one economic asset, one bridge identity: burn on source â mint native on destination.
It could be a native crosschain ERC-20 token or a custom issuer-operated ERC-20. Same transfer flow. Fees in USDC. Predictable finality. Issue or hold inventory on Arc, then move it wherever the application needs it.
circle.com/blog/make-your-toâŚ
Circle Developer retweeted
Technical Office Hours with @hj_chen on October 29 at 8 AM ET.
Join us to explore CCTP beyond USDC, covering expanded ERC-20 support, native, custom, and ownerless models, and how tokenId works across chains.
Weâll walk through a live demo. Bring your questions.
community.arc.io/public/evenâŚ
Circle Developer retweeted
In addition to USDC, Gateway now supports EURC and cirBTC. And it uses the same Gateway flow you're familiar with.
More exciting things to come for Circle Interop so stay tuned :)
developers.circle.com/gatewaâŚ
Circle Developer retweeted
Custara is now live on the Odoo Apps store.
apps.odoo.com/apps/modules/1âŚ
Connect your odoo, and your posted vendor bills flows in. Every bill is checked against your policies, approved by your team, and paid in USDC on Arc.
Your books stay in Odoo.
Payments stay under control.
Circle Developer retweeted
Real stories. Everyday @USDC.
Join the new USDC group in @Arc House. Share your story and meet other fans.
Kick off with us at the @Circle x @ChelseaFC NYC Watch Party, Oct 28.
Join the group Today!
hubs.li/Q04CddCS0
ALT usdc group on arc house and watch party in NYC on oct 28 for Chelsea FC
Circle Developer retweeted
Announcing!!! New Group and Watch Party!!
The @USDC Community is live on Arc House!
Itâs a new home for USDC fans to learn, ask questions, and connect with Team USDC and each other.
Join the club, and use the forum, events, and member directory to get involved.
And weâre kicking things off in person:
â˝ Circle x Chelsea NYC Watch Party
đ
Wednesday, October 28 | 3:45â6:00 PM EDT
đ Brooklyn, NYC
Watch Chelsea take on Liverpool with @circle and Team USDC. Expect good company, new connections, and merch giveaways. Bring someone new to USDC!
Spots are limited, so RSVP now: community.arc.io/home/clubs/âŚ
Join the community: community.arc.io/public/clubâŚ
Circle Interop goes further: cirBTC and EURC join USDC on Circle Gateway.
Builders get one unified balance per asset with gas-free Nanopayments powered by Gateway. Use the same Gateway integration, with no changes for existing USDC users.
Explore Gateway: developers.circle.com/gatewaâŚ
Circle Developer retweeted
What comes after the first transaction?
@Alex__Radu, founder and CEO of @PulsarMoneyApp, shares how the team is building on Arc to connect stablecoin balances with everyday spending, trading, and rewards.
Read the guest post: community.arc.io/home/blogs/âŚ
Circle Developer retweeted
ERC8439: Settlement decoupled nanopayment ledger
A settlement-decoupled fiat nanopayment ledger with three-party authorization and independently signed batching
Authors: Zhe Han, Dasong Ji, Yunyi Zhu, Qinwei Fu, Xiaoyu Liu & Shenglong Chen
github.com/ethereum/ERCs/pulâŚ
Circle Developer retweeted
There is one Arc Studio feature that, if youâre not using while building onchain, youâre debugging blind.
Itâs called Tracing.
Letâs imagine youâre building an app that sends USDC. You click send and approve the transaction in your wallet, but your app is still loading.
Now youâre not sure whatâs going on.
Did the wallet connect? Was the transaction submitted? Was it confirmed onchain? Did the contract emit the expected event?
Instead of checking your browser console, wallet, and explorer separately, Tracing shows the full flow in one timeline.
You can see every step, how long it took, where something failed, and the data your app sent and received.
You could paste logs into an AI coding tool and ask it to debug them. But the real value of Tracing is that it automatically captures the full onchain flow first, so the AI has the right context to explain what happened.
You can also click Ask Studio and let the AI explain the trace for you.
Start building today at studio[dot]arc[dot]io
CCTP is expanding beyond USDC.
Developers can now enable crosschain transfers for supported Circle-issued assets, like EURC and cirBTC, and third-party assets using CCTPâs messaging infrastructure.
In this video, learn:
â How CCTP supports more assets across blockchains
â What this unlocks for developers
â How to get started sending EURC over CCTP
CCTP V2 on @SuiNetwork is now live.
Developers now have access to native USDC burn and mint transfers, inbound Fast Transfer, hooks, programmable messaging, and Sui specific tooling.
Start building: developers.circle.com/cctp
Circle Developer retweeted
USDC Bridge now supports @Solana.
Move USDC directly between Solana and 18 supported ecosystems through a simple, predictable bridging experience built by Circle.
Access Solana liquidity, apps, and market opportunities without fragmented flows or unnecessary complexity.
Start bridging: bridge.usdc.com
Circle Developer retweeted
Give your agent a budget, not tools to wire up.
With SELAT, your agent finds the paid APIs and skills each task needs and pays for them as it goes, from one USDC balance funded on @arc.
Your turn: build a cross-rail workflow with SELAT and show us what your agent did.
Circle Developer retweeted
Want to give your agent access to USDC (the $ agents use for 99% of txns)?
Copy + paste this into your @Muse:
"Connect to Circle Agent Stack using agents.circle.com/skills/setâŚ"
Circle Developer retweeted
đ¤ Agents â¤ď¸ @USDC
Now, you can give your @Muse agent access to USDC using @circle Agent Stack!
Want to give your agent access to USDC (the $ agents use for 99% of txns)?
Copy + paste this into your @Muse:
"Connect to Circle Agent Stack using agents.circle.com/skills/setâŚ"
Circle Developer retweeted
Want to give your agent access to USDC (the $ agents use for 99% of txns)?
Copy + paste this into your @Muse:
"Connect to Circle Agent Stack using agents.circle.com/skills/setâŚ"
An agent can research market sentiment, pay for the services it needs, create a brief, and deliver the update by phone.
That is the shift Circle Agent Stack is built to support: agents that complete workflows, not just generate text.
Circle Developer retweeted
I wrote more about the process on our forums on @Arc house
community.arc.io/home/clubs/âŚ
Social verification doesn't need to be slow or expensive.
By Using @Circle's Agent Marketplace, Was able to run near instant account verification across thousands of X community accounts for under 20 USDC.
agents.circle.com/services/tâŚ
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