Get a link for the holder to save their own card
Returns a single-use link where the account holder types a card they already own and locks it with their passkey. The card is encrypted on their device; Laso never sees the number.
Send the url to your human. Do not open it yourself. Saving a card is the holder's step, like identity verification: the page asks for the card and a passkey, with no account to create and no code to type.
Poll GET /get-saved-cards until the card appears. Each link works once and expires at expires_at; mint a new one if it lapses.
This route is free and needs no identity verification or prior setup: the holder's first saved card creates their card account.
Request
- Base URL: https://laso.finance
- URL: https://laso.finance/create-saved-card-link
- Auth: API key in header Authorization
Headers
Optional client-generated unique key (a UUID works) that makes this write safe to retry. A retry with the same key within 24 hours returns the recorded response of the original request, marked with an Idempotency-Replayed: true header, instead of performing the write again. Reusing a key with a different body or route is rejected with 422 (code: idempotency_key_reused); a retry that arrives while the original is still running gets 409 (code: idempotency_key_in_progress), so wait a moment and retry with the same key. Keys are scoped to the authenticated account.
Response
The link to send the account holder.
Changes
No recorded changes to this operation across all 3 revisions of this API.