1
The owner grants a mandate
Categories, an approved-vendor list, per-payment and daily, weekly and monthly caps, a human-approval threshold and an expiry. Held by MandateRegistry. No admin key, no pause switch.
Tameion Agents HackathonCanteen × CircleSettled in USDC on Arc
An AI treasurer you can audit.
Give an agent the keys to a company's money and it needs a limit it cannot argue with, and a record you can replay. Credentia enforces both on-chain.
The film
Two minutes, real transactions.
Every figure, address and hash on screen comes from the live deployment. Captions are on.
How it works
Authority is scoped. Every action is recorded.
The registry is a policy ledger, not custody: it holds no funds. It decides whether a payment is allowed, and the agent can only act inside that answer.
2
The agent pays inside it
Each request is validated on-chain, the spend is recorded, then USDC is sent through Arc's USDC contract. Over the limit or an unknown payee is refused. At the threshold it waits for a signed human approval.
3
Every decision is provable
Paid, refused or escalated, each outcome is appended to DecisionLog with the transfer hash and the rule that failed. Records are hash-chained, so editing one breaks every later hash.
On-chain record
Check it yourself.
Everything below is on Arc testnet and opens in the public explorer.
#0
Payment
0xbe82b08c…
#1
Payment
0xb292d640…
#2
Payment
0x9604ecec…
#3
Refused
0xae050ad4…
#4
Refused
0x32118282…
#5
Escalated
0xcbf9ac49…
The six records of the demo run, each hashed together with the one before it.
3real USDC payments, with transfers on the Arc explorer
2payments refused by the mandate, each logged with the failed rule
0owner, admin or pause keys on either contract
600+automated tests across contracts, API and web app
Honest status. This is an unaudited testnet prototype and the demo business was created by the builders; there are no outside customers yet. The registry records and authorises spending but cannot move funds, so a compromised agent key could still send USDC outside it. Do not use real funds.