Mode:Simulation · Gemini API bypassed · Arc tx refs real
P402 Meter·Arc TestnetDemo

Real-time AI billing
for payer operations

Upload a prior auth document, Gemini reads it, classifies it, reviews it.

Every AI token settles as a USDC event on Arc. Total cost: under $0.01.

The ledger, the cost, and the proof stay visible from start to finish.

55+ Arc settlements per run$0.006 per settlement vs $2.85 on ETHGemini Flash + Pro · multimodalCircle wallets · Arc testnet
One-Click DemoSafe mode · Gemini bypassed
What this provesAI compute can be metered, priced, and settled at token granularity, making per-action billing economically viable for the first time.
De-identifiedNo PHIAdmin Only
Budget Spent$0.000000
Remaining$0.5000
AI EventsNot started
Arc TxNot started
Avg / EventNot started
ProofREADY
READY
SessionNot started
Budget
$0.0000 / $0.50
Arc Settlement Proof · Hackathon Criteria
AI Events
Not started yet
Signed Auths
Not started yet
Arc Tx
Not started yet
Avg / Event
Not started yet
50+ Threshold
requirement
Circle + Arc Infrastructureload-bearing components
Circle DCW
Session Wallet
Developer-Controlled Wallet provisioned on ARC-TESTNET per session. No user custody required.
Nanopayments
Sub-Cent Settlement
Circle Nanopayments API authorizes each USDC micro-event. One authorization per AI billing chunk.
Circle Gateway
x402 Verification
Gateway domain 26 on Arc testnet. Verifies x402 payment headers at gateway-api-testnet.circle.com.
Arc Testnet
Chain Settlement
USDC as native gas. Chain ID 5042002. USDC predeploy 0x36000…. Settlement at $0.006/tx.
Agentic Commerce on Arc Hackathon · April 2026 · Best Gateway-Based Micropayments Integration · Best Use of Gemini Models
01Document Intake
Prior Auth · Gemini Multimodal
De-identified · Administrative only · No PHI
Approval required
Sample Scenarios
De-identified · Admin only
Diagnostic
Inpatient
Pharmacy
Surgical
BH
PAC
Click any row to load the case text directly. Use ↓ to save a copy to disk.
Multimodal Image Demo
Gemini Vision
De-identified prior authorization form, multimodal demo
Prior Auth Form (PNG)
Synthetic · De-identified · No PHI
A realistic-looking PA form rendered for Gemini vision extraction. Upload via the Image/PDF tab to see multimodal structured field extraction in action.
↓ Download PNG
·
image/png · ~120 KB
Download the PNG, then switch to the Image / PDF tab above and upload it. Gemini Flash will read the form fields and extract structured healthcare data.
02Gemini Extraction

Upload a packet or load the demo packet.

Gemini will extract payer, procedure, urgency level, and review flags here.

03UM Review Summary
Waiting for work order

Start the review to see the payer-ops summary.

Gemini will produce a utilization management summary with rationale, policy reference, and recommendation.

No work order
04Economic Ledger
$0.000000

Each billed AI event will appear here in order.

Running cost and Arc settlement proof are shown per event. Start a review to begin.

Budget Cap$0.50
Session
Total Cost
AI Events
Arc Tx
Verify on ArcScan →0x05c209e0208Fee87e1fE974789ebc3aD5B317c1D
↗ Open
06Governed Outcome
Awaiting Review Completion
Inherited P402 Trust Depth
Trust Center ↗
ERC-8004 Identity
Reputation-Aware Routing
AP2 Budget Controls
Evidence Bundle Ready
Replay Protection
Non-Custodial Execution
Why Arc works for per-step AI billing
Gateway-Based Micropayments · Arc Hackathon
Ethereum
$2.85

Settlement cost exceeds the AI work itself. Real-time per-token billing is structurally impossible.

Stripe
$0.30 min

Minimum fee forces batching 300+ sub-cent actions. Real-time pricing is eliminated.

Arc
$0.006

Sub-cent settlement preserves real-time pricing. Every token chunk settles individually.

NetworkSettlement costAI costTotal / actionViable
Ethereum Mainnet (30 gwei)~$2.85~$0.0003~$2.85
Stripe (2.9% + $0.30 min)$0.30 min~$0.0003~$0.30+
Base L2 (typical)~$0.02~$0.0003~$0.020
Arc Testnet (USDC gas)$0.006 USDC~$0.0003~$0.0063

Arc is the first rail in this demo where settlement stays below the value of the individual AI action.ETH gas at 30 gwei, 65k gas per ERC-20 transfer. Numbers from live Arc testnet runs.

Circle Infrastructure
Circle Developer-Controlled Wallets provision per-session spending accounts on ARC-TESTNET. Circle Nanopayments handles sub-cent settlement. Circle Gateway domain 26 verifies x402 payments on Arc.