curl --request POST \
--url https://laso.finance/create-saved-card-link \
--header 'Authorization: <api-key>'import requests
url = "https://laso.finance/create-saved-card-link"
headers = {"Authorization": "<api-key>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: '<api-key>'}};
fetch('https://laso.finance/create-saved-card-link', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://laso.finance/create-saved-card-link",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://laso.finance/create-saved-card-link"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://laso.finance/create-saved-card-link")
.header("Authorization", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://laso.finance/create-saved-card-link")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"url": "<string>",
"expires_at": 123,
"note": "<string>"
}{
"error": "A request with this Idempotency-Key is still being processed",
"code": "idempotency_key_in_progress"
}{
"error": "Idempotency-Key reused with a different request",
"code": "idempotency_key_reused"
}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 first sends a one-time code to the contact on their card account, then asks for the card and a passkey.
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, only a card account linked to this wallet (a 400 otherwise).
curl --request POST \
--url https://laso.finance/create-saved-card-link \
--header 'Authorization: <api-key>'import requests
url = "https://laso.finance/create-saved-card-link"
headers = {"Authorization": "<api-key>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: '<api-key>'}};
fetch('https://laso.finance/create-saved-card-link', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://laso.finance/create-saved-card-link",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://laso.finance/create-saved-card-link"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://laso.finance/create-saved-card-link")
.header("Authorization", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://laso.finance/create-saved-card-link")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"url": "<string>",
"expires_at": 123,
"note": "<string>"
}{
"error": "A request with this Idempotency-Key is still being processed",
"code": "idempotency_key_in_progress"
}{
"error": "Idempotency-Key reused with a different request",
"code": "idempotency_key_reused"
}Authorizations
Firebase ID token from /auth or any paid route, sent as a Bearer token: Authorization: Bearer <id_token> (the Bearer prefix is required).
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.
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