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POST
Issue a new virtual payment card

Authorizations

Authorization
string
header
required

API key prefixed with 'Bearer sx_live_...'

Body

application/json
purpose
string
required

Human-readable label for the card

Example:

"Research Agent"

limit_amount
required

Maximum spend in USDC

Example:

50

network
string
default:eip155:8453
asset
string
default:USDC
tx_hash
string

On-chain funding transaction hash (optional)

mcc_locks
string

Comma-separated merchant category codes

single_use
boolean
default:false
expires_in
number

Hours until expiry (0 = never)

Response

Card created

success
boolean
card
object