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Self-Custody Base USDC Checkout (For Developers & Smart Accounts)

Implementation request? The selected API subscription below (including the $299 Growth API subscription) is API access and decision credits; it is not the separate $299 Fix service. Confirm one exact Base boundary and acceptance scope first, then pay only if that scope is accepted. Start scope before payment

Settlement is on-chain on Base. The exact amount is quoted and frozen when the purchase intent is created, and you sign that quote before paying. Payment is verified against a credentialed RPC with three block confirmations before a key is issued. There is no card processor and no stored payment method on this self-custody rail.

Progress

Choose a plan and connect the wallet that will pay.
Sign the purchase intent (free, no transaction).
Send the exact amount to the payout address on Base.
Claim the key once the transaction has 3 confirmations.

1. Plan

Plan

Prepaid access period

Renew my existing paid key in place. The key must belong to the connected wallet. Free keys cannot be renewed or recovered.

Compare plans

2. Payment instructions

Send from the same wallet that signed the intent. A payment from any other address cannot be claimed. The quote expires with the intent — create a new one if it lapses.

3. Claim your key

After a wallet payment, this page watches the transaction and claims automatically after three Base confirmations. You can still paste the transaction hash if you paid manually or the wallet does not expose receipt updates. Claiming is idempotent: a hash can only ever be redeemed once.