Supported beta access today is an admin-issued API key or an admin-whitelisted wallet session. Billing truth lives on /api/v1/account/balance, /api/v1/account/holds, and /api/v1/account/ledger. If project init or job submit returns a shortfall quote, fund the account and retry the same request. Join the waitlist for beta access, and report onboarding blockers via POST /api/v1/feedback.