Celo Developers ◘ 🦇🌳

The home for builders on @celo 💛

Building on Celo? Join our Agentic Hackathons to compete for bounties

[Celo Developers ◘ 🦇🌳 @CeloDevs]

ATTENTION BUILDERS: Agents on Open Rails Hackathon kicks off today with $5K in prizes!

You’ll have five weeks to ship agents that move real value on @Celo: from LatAm stablecoins and onchain FX to services that get paid on their own.

Here's everything you need to know ↓

[Eagle @oxeagleeyes]

Agent-to-agent remittance rails on @Celo.

Agents pay agents across borders, in the currency the recipient spends, on mandates and spending limits that a human signs on-chain.

Pesos, reais, soles, naira, or dollars, with nothing converted on the way. Live on mainnet.

[Susanne Zapelão @SZapelao]

900K+ x402 payments already on @Celo, and now in even more local currencies: x402/Celo now covers $cNGN, $wMXN, $wCLP and $wPEN 🌍

Ship something targeting local markets for the Agents on Open Rails Hackathon - Registrations until Nov 9: https://t.co/BrEY2myvVu

[Kiyoshi @Kiyoshi_FX_]

@kiyoshi_fx_ is an autonomous FX agent built on @Celo for the @CeloDevs Agents on Open Rails hackathon.

It watches Uniswap and @Textileprotocol every minute and trades the gap only when both sides lock in a profit.

So far: 165 round trips, every one profitable, $23,600+ filled on Textile FX and +$211 in profit.

Anyone can also use Kiyoshi Convert to get the better rate, straight from their own wallet.

Try it live: https://t.co/qItr8jitWD

[AbaPay @abapays]

AbaPay already lets any agent (or human) pay real Nigerian bills — airtime, data, electricity, cable,exams— straight from a Celo wallet over x402 with zero setup.
Adding native $cNGN support is next so agents can settle in Naira without FX friction.
Agents paying everyday bills, onchain.
https://t.co/70iG1782ub
https://t.co/CuTNYtZb0P

[Self @selfxyz]

Still haven't figured out your Halloween costume?

Agent Vault lets @Muse, Grok @Bot, @ClaudeAI, and more AI assistants shop for you without seeing your card information.

[MiniKlaim @MiniKlaim]

3 weeks since MiniKlaim went live on @minipay

Since then: blocks got levels, 9 ways to move, streaks that actually work, and every block onchain on @Celo

Here's everything that shipped 🧵

[Saluto @hisaluto]

In Spanish, mañana means both "tomorrow" and "morning," so tomorrow morning becomes "mañana por la mañana" 🌅

Saluto's "Saludos" unit teaches mañana early on, so you can nail even the trickier linguistics.

Get started, right in @MiniPay

[Arbolito 🌳 @arbolitoo_]

Meet Arbolito 🌳

In Buenos Aires, an "arbolito" is the guy on the street who changes your dollars.

I built a digital one. It lives in MiniPay and on Telegram, and it's live on @Celo today.

[edidiongumana(agentic multiverse) @defimessiah1]

LIVE UPDATE:

🌎 Which city in the world is building the most agents on @Celo?

1. Lagos, Nigeria: 39 builders
2. Jujuy, Argentina: 15 builders
3. Córdoba, Argentina: 11 builders

Live ranking for Agents on Open Rails, the @CeloDevs hackathon 👇

https://t.co/DLKwU8MkFK

[Celo Developers ◘ 🦇🌳 @CeloDevs]

@vet402_com @Emmanuelryz @USDC Happy we could help!

[Sen | vet402 @vet402_com]

Thanks @CeloDevs for tracing it to the seller and getting the key fixed.

Oct 26 23:31 to Oct 27 21:56 UTC, vet402 logged 18 settled Celo purchases on 8 hosts, each re-read onchain.

@Emmanuelryz vet402 pays only USDC on Celo.
How it finds endpoints: https://t.co/0OCjVBsJEc

Other stablecoins can be reviewed as x402 demand grows.

[Celo Developers ◘ 🦇🌳 @CeloDevs]

@Celo @tether @usat @ripiohq @cngn_co We love to see it.

Potential use cases we are already seeing is paying for utilities in your local stablecoins and splitting apps.

We are looking to see many more in our current hackathon!

[Celo @Celo]

On Celo, your agent pays in the currency it holds

x402/Celo now accepts 10 stablecoins across 8 global currencies

https://t.co/NVtlvlfS9w

[Celo Developers ◘ 🦇🌳 @CeloDevs]

Good question.

It was the seller, not the facilitator: /verify and /supported are open, /settle needs the account key, and those hosts never sent one, so everything looked healthy until a buyer paid.

Nothing drops headers on our side. They have a key now and vet402 has recorded 13 settled Celo purchases from them since last night.

Your Naira Rates endpoint is doing it right, by the way: v2, USA₮, discovery block, first settlement landed on the 26th.

One small thing: your 402 advertises the resource as http://, worth making it https:// so indexers match it.

[Celo Developers ◘ 🦇🌳 @CeloDevs]

@mel_sol1 @Celo @Textileprotocol @Kiyoshi_FX_ Great build!

[0xJedi | Legion @mel_sol1]

I built Kiyoshi, an autonomous FX agent for the @CeloDevs Agents on Open Rails hackathon.

The problem: on @Celo, the same currency often trades at two different prices on Uniswap and @Textileprotocol at the same time.

@kiyoshi_fx_ scans every Celo corridor every minute (real, peso, naira) and trades the gap when it pays.

It only trades when both legs lock in a profit, and every transaction is tagged onchain to my entry.

It has its own onchain identity: ERC-8004 agent #9991.

It started with just $35 and built up from there.

The results so far:
165 round trips, 100% profitable.

+$211 in profit and $23,600+ in volume filled on Textile FX.

Every trade is public.

Verify the wallet yourself: 0x497F12830607015Ed5ec9736afe43aaF8496512f

It also powers Kiyoshi Convert, which routes anyone to the better rate from their own wallet.

It runs 24/7 with no human in the loop, and when a gap closes, it simply stops and waits.

Live dashboard:
https://t.co/d8RhinzBHf

Code: https://t.co/GF6uYH0ahz

[Celo Developers ◘ 🦇🌳 @CeloDevs]

Agents on Open Rails | Hackathon live stream with Textile FX https://t.co/yyy8oQVo6J

[Celo Developers ◘ 🦇🌳 @CeloDevs]

@_CryptoZee @Celo @cngn_co @ripiohq 🫡

[Celo Developers ◘ 🦇🌳 @CeloDevs]

Building with it:

→ GET https://t.co/ogMyqjx4R3 lists every asset and its assetTransferMethod
→ Price routes in the local token: asset address + decimals (18 for wFIAT, 6 for cNGN)
→ Same /verify and /settle endpoints

💡 Docs: https://t.co/UnMAQ4qkkc

[Celo Developers ◘ 🦇🌳 @CeloDevs]

x402/Celo now supports cNGN, wMXN, wCLP and wPEN: 10 stablecoins, 8 currencies.

→ USD stablecoins settle via EIP-3009 transferWithAuthorization
→ wFIAT tokens and cNGN settle via Permit2 with EIP-2612 gas sponsoring

💡 Same facilitator, same API key, no gas for the buyer.

[Celo @Celo]

🗞️ x402/Celo now supports @cngn_co’s $cNGN & @RipioHQ’s $wMXN, $wCLP & $wPEN, completing the wFIAT stack

Over 900K x402 payments from 4,000+ payers have already taken place on Celo

Agents can now pay in Naira, Pesos & Sol, bringing support to 10 stablecoins across 8 currencies

[Celo Developers ◘ 🦇🌳 @CeloDevs]

How Permit2 settlement works on the facilitator:

→ The buyer signs a permit for Permit2 off-chain
→ The facilitator broadcasts it and pays the gas
→ Settlement moves tokens directly from buyer to merchant

💡 The buyer never holds CELO and never sends a transaction.