Sponsor-backed USDC spending lines for agents on Arc. Signed intents, provider payments, debt, repayment, and blocked overruns.
Joined May 2026
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3rd place at Agora x Arc 🥉
Canteen said it well: Shadow gates agent intents. Accountability before execution, settled in USDC on Arc.
Autonomous capital should be accountable. Thank you @thecanteenapp and @arc. This is the start.
Ofc! How could I forget...
🥉 3RD PLACE (pool of 3)
STOA INSIGHT BOT by @atomic_kurogane
SHADOW by @0xqdee
RUGJEEZ by @singhsach1 & Mousumi B
Shadow retweeted
Shadow was born at @thecanteenapp’s Agora hackathon.
The journey kept moving: more building, more testing, and now the @encodeclub × @arc Programmable Money Accelerator.
Today, Shadow is live on Arc mainnet
Still day one.
Shadow was born at @thecanteenapp’s Agora hackathon.
The journey kept moving: more building, more testing, and now the @encodeclub × @arc Programmable Money Accelerator.
Today, Shadow is live on Arc mainnet
Still day one.
That feedback has already become shipped improvements:
Smoother funding steps. Automatic report recovery. Saved reports that remain accessible. Clearer closed lines. Fewer repeated checks before wallet prompts.
We’re building, testing and improving as we go.
Arc mainnet contract:
0xcA819e8713b04a4Bd7e437c04BB97ac9274e2ce5
Code: github.com/buildwithshadow/s…
Try it: shadowbuild.xyz/mainnet
Individuals, teams and organizations operating or sponsoring agents: come try Shadow. We’d love your feedback.
Shadow retweeted
A payment timeout doesn’t mean the payment failed.
While building @ShadowOnArc on Arc, I’ve been thinking about how agents recover from lost responses without paying twice.
I shared a recovery checklist on Arc House:
community.arc.io/home/forum/…
Shadow retweeted
Two weeks into @encodeclub × @arc accelerator, Shadow’s been busy 👀
Self service onboarding ✅
Circle Agent Wallet purchases ✅
Gateway funding rehearsal ✅
Recovery without duplicate payments ✅
Controlled mainnet cycle ✅
Fund →buy →repay →reclaim
Building the full loop.
Two weeks into @encodeclub × @arc accelerator, Shadow’s been busy 👀
Self service onboarding ✅
Circle Agent Wallet purchases ✅
Gateway funding rehearsal ✅
Recovery without duplicate payments ✅
Controlled mainnet cycle ✅
Fund →buy →repay →reclaim
Building the full loop.
Shadow retweeted
$6.8B in USDC moved in one week shows how quickly activity is growing on Arc. As this economy grows, AI agents need more than wallets. They need spending controls. Shadow is building sponsor-backed USDC spending with enforceable limits, approved providers and payment recovery.
One week on Arc Mainnet.
624M USDC in circulation.
$6.8B USDC transferred.
Day one was just the beginning.
Shadow retweeted
Autonomous agents need more than wallets, they need accountable access to capital. Shadow lets sponsors fund approved API, data and compute purchases without surrendering control. Building on @arc? We’re inviting a small group of teams to join our next testnet pilot. DM us.
Autonomous agents need more than wallets, they need accountable access to capital. Shadow lets sponsors fund approved API, data and compute purchases without surrendering control. Building on @arc? We’re inviting a small group of teams to join our next testnet pilot. DM us.
Shadow retweeted
A payment succeeds, but the agent misses confirmation. Retrying could cause a duplicate charge. Shadow verifies the original transaction before another attempt. Which agent-payment failure should we demonstrate next?
Built on @arc with @encodeclub.
🤖 Made with AI
A payment succeeds, but the agent misses confirmation. Retrying could cause a duplicate charge. Shadow verifies the original transaction before another attempt. Which agent-payment failure should we demonstrate next?
Built on @arc with @encodeclub.
🤖 Made with AI
$6.8B in USDC moved in one week shows how quickly activity is growing on Arc. As this economy grows, AI agents need more than wallets. They need spending controls. Shadow is building sponsor-backed USDC spending with enforceable limits, approved providers and payment recovery.
One week on Arc Mainnet.
624M USDC in circulation.
$6.8B USDC transferred.
Day one was just the beginning.
Shadow retweeted
Today, Shadow begins onboarding for the Programmable Money Accelerator with @arc and @encodeclub. We look forward to working with the cohort over the next eight weeks.
3,968 registrations. 1,239 projects. 12 finalists.
Meet the hackathon finalist teams that are heading into the @arc Programmable Money Accelerator!
Eight weeks of workshops, 1:1s with the Encode team and a Demo Day in front of investors in November.
Kicks off today at 4pm!
Find out more👇
encodeclub.com/programmes/ar…
ALT Meet the Arc Accelerator cohort: logos of the 12 teams from the Programmable Money Hackathon entering the Programmable Money Accelerator by Arc and Encode Club, kicking off 21 September 2026.
Today, Shadow begins onboarding for the Programmable Money Accelerator with @arc and @encodeclub. We look forward to working with the cohort over the next eight weeks.
3,968 registrations. 1,239 projects. 12 finalists.
Meet the hackathon finalist teams that are heading into the @arc Programmable Money Accelerator!
Eight weeks of workshops, 1:1s with the Encode team and a Demo Day in front of investors in November.
Kicks off today at 4pm!
Find out more👇
encodeclub.com/programmes/ar…
ALT Meet the Arc Accelerator cohort: logos of the 12 teams from the Programmable Money Hackathon entering the Programmable Money Accelerator by Arc and Encode Club, kicking off 21 September 2026.
Next chapter for Shadow: the Programmable Money Accelerator.
We’re building working capital for autonomous agents on @arc. Excited to keep building with @encodeclub 🚀
Shadow made the final 12 out of 500+ submissions at the Programmable Money on Arc Hackathon 🏆
Now we’re joining the accelerator to keep building programmable working capital for autonomous agents.
Thank you @encodeclub and @arc. Onward with @ShadowOnArc 🚀
ALT Arc and Encode Club Certificate of Finalist for qdee and Shadow, selected as a finalist in the Programmable Money on Arc Hackathon, August–September 2026.