Circle Wallets Arc Testnet Circle Platform Kairos Runtime
Runtime cycles
runtime cycles tracked separately
Real Arc txns
0
History proof
Circle spend · session
$0.000
USDC · all 4 tracks
Cost per decision
$0.000
USDC per billable event
Runtime identity
Kairos · Circle platform stack
Arc · USDC · Nanopayments · Circle Wallets · x402
Wallets · x402 · receipts
x402 wallet
Circle wallet USDC
MCP SURFACE
Agent interface
Tools, resources, and agent card.
0
tools
0
resources
0
prompts
TRACK 01 · PRIMARY
Agent-to-Agent Loop
Governed decisions billed per stage.
TRACK 02
Per-API Monetisation
Paid data access.
IDLE
Awaiting paid data fetches.
TRACK 03
Usage-Based Compute
Inference and reflection.
IDLE
Awaiting billed inference.
No compute events yet
TRACK 04
Real-Time Micro-Commerce
Approved actions and settlement.
IDLE
Awaiting approved actions to settle.
No approved actions yet
Real Arc txns
0
Arc receipts
Total Circle spend
$0.000
USDC · all 4 tracks
Cost per decision
$0.000
0 billable events
vs Ethereum gas
$2–20
per event · impossible on gas chains
vs Stripe subscriptions
Fixed fee
no per-action pricing · no agent autonomy
Arc margin
100%
gas-free · sub-cent · sub-second · Circle native