Euthyna

Euthyna: an AI treasurer on probation. Spending power rises when its predictions settle true, halves on a miss. Built on @Arc + @Circle. #Tameion @thecanteenapp

[Euthyna @euthynax]

@MochibunnyQ @arc @circle The agent never grades itself. The contract records every bill and when it was paid, and after the deadline anyone can call settle() to check. A kept promise raises the limit a little; a missed one halves the score. So yes, it can go back down.

[Euthyna @euthynax]

Would you let an AI agent spend your company's money? 👀

Meet Euthyna: an AI treasurer on probation.
Its spending limit lives in a smart contract, and it only goes up when the agent keeps its promises.

Built on @arc with @circle for #Tameion

[Arc @arc]

Explore Arc, all in one place.

Swap, send, and put assets to work with Arc Portal. Discover apps built on Arc and enable agents with limits and permissions you control.

https://t.co/ZcnUTW7xfc

[Euthyna @euthynax]

You can now talk to Euthyna from Claude or Cursor

Ask about your vault, the agent's recent decisions, or its trust record, and it verifies each decision's hash itself.

Read-only. No keys. Can't move money.

https://t.co/tpMpCJU05T

[Euthyna @euthynax]

Looking for a few early users for Euthyna ⚖️

An AI treasurer on Arc that pays your bills in USDC, but it has to earn its spending limit by keeping on-chain promises.

Your own vault, your own wallet, about 5 min to set up.

Try it 👇
https://t.co/ohBFLHBmvZ

[Euthyna @euthynax]

Built for the Tameion Agents hackathon with @circle X @arc X @thecanteenapp

Try it, or watch the demo:
🌐 https://t.co/ohBFLHBmvZ
🎥 https://t.co/Cs9LBuesOw
💻 https://t.co/OkE6jzkfFN

Feedback welcome 🙏

[Euthyna @euthynax]

So far, all on-chain:
• 8 bills paid by the agent on its own
• 29 times the policy layer caught the AI before anything was sent
• Every decision hashed on-chain and replayable in the browser

The model proposes, code checks every number, the contract decides.

[Euthyna @euthynax]

How it earns trust:

When the agent saves spare cash, it makes an on-chain promise: every bill due before a deadline gets paid on time.

After the deadline, anyone can call settle(). The contract grades it.

✅ Hit → limit rises
❌ Miss → score halves

[Euthyna @euthynax]

Would you let an AI agent move your company's money?

Meet Euthyna: an AI treasurer on probation.

It pays bills in USDC on @arc, but its spending limit lives in a smart contract, and it only goes up when the agent proves it kept its promises. 🧵

[Euthyna @euthynax]

Honest status: one business on it so far, and it's mine. I'm looking for the first outside teams.

If you pay for anything, put one bill on it in 5 min (testnet, free):
🌐https://t.co/ohBFLHBmvZ
📄https://t.co/tpMpCJU05T

[Euthyna @euthynax]

The model proposes, code checks every number, and the contract has the final word. The agent can't send money to an address you haven't approved.

Built with @circle wallets + USDC on @arc .
@thecanteenapp #TameionHackathon

[Euthyna @euthynax]

Live on Arc testnet right now:
• 8 bills paid by the agent on its own, 49.10 USDC, 5 payees
• its first real commitment is open: 14 USDC in reserve, graded tonight
• every decision is hashed before money moves, and you can re-verify it in your browser

[Euthyna @euthynax]

How it earns trust: when it parks idle cash in reserve, it commits on-chain that every bill due before time T will still be paid on time.

After T, anyone can call settle(), and the contract grades the claim from its own records. No self-reported metrics.

[Euthyna @euthynax]

Meet Euthyna - an AI treasurer on probation.
It pays a small business's bills in USDC, but its spending limit isn't a setting. It lives in a smart contract on Arc and moves only with an on-chain track record:✅ hit → limit rises ❌ miss → score halves #TameionHackathon #Tameion

[Euthyna @euthynax]

Result: hit. Score 0→0.008333. Limit 25.00→25.0167 USDC.

tx: https://t.co/2d7cE1NstX

(test vault, short params to demo the loop fast — real numbers, hash on-chain)

[Euthyna @euthynax]

It swept 1 USDC into reserve and committed to a falsifiable claim: every bill due in the next 6 hours gets paid from liquid cash. Then it paid the bill, on time.

After the window closed, anyone could call settle() — the contract checks its own records, no human involved.

[Euthyna @euthynax]

Built a treasury agent whose spending limit is set by a contract that grades its own predictions. Today it earned its first real increase — autonomously.

[Euthyna @euthynax]

Plain value-transfer to EuthynaVault reverted as expected — no receive() fallback, so funds can’t enter without going through deposit() and being attributed to an owner. Small check, but it matters once an AI agent is spending from this vault.

https://t.co/3lBi4QNfly

[Euthyna @euthynax]

Building an AI that manages a business’s money — but it has to earn the right to spend more. Mess up once, its power gets cut in half automatically.

Working on it for the #TameionAgentsHackathon by @thecanteenapp × @circle, on @arc. More soon 👀