Circle launches Arc mainnet with payment agent and managed x402 access
- —Arc mainnet launched on September 16, 2026, with USDC as the settlement asset
- —Arc Portal lets users set global and per-service limits as well as agent session durations
- —x402 processed 75.41 million transactions and $24.24 million in volume over 30 days
- —USDC market capitalization stood at about $74.28 billion as of September 19
Why it matters: Managed agent wallets could accelerate institutional adoption of USDC in payments by setting a standard for controlling AI agent spending.
Source: Coincu