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Withdrawals use fast finality (a standard transfer out of Starknet waits hours for the L1 proof), so Circle takes a fee from the burned amount, 12 bps to Base on 2026-10-24. When sponsored is true Chipi’s relayer pays that fee back to the recipient on the destination chain, so they receive the full amount. Display only: Chipi resolves sponsorship again when the burn is recorded.

Authorizations

Authorization
string
header
required

Bearer token — use your secret key (sk_prod_xxx) for server-side calls, or the user's JWT for client-side calls

x-api-key
string
header
required

Your Chipi public API key (pk_xxx)

Body

application/json
destDomain
integer
required

Circle CCTP domain of the destination chain

amount
string
required

Human USDC amount, e.g. "7.810000"

walletAddress
string

The Chipi wallet withdrawing; resolves the per-user sponsorship allowance

Response

Quote

feeBps
number
required

Circle's fast fee for this route, in basis points (e.g. 12 = 0.12%)

sponsored
boolean
required

Whether Chipi pays the fee back to the recipient on the destination chain

userReceives
number
required

Human USDC the recipient receives: the full amount when sponsored, amount minus fee otherwise