Check merchant compatibility before ordering a card

Why check first?

Laso Finance prepaid cards work at most merchants, but not all. Before your agent orders a card and attempts a purchase, it can query Laso’s merchant database to see if the card is known to work at a given merchant for the selected card type. This is free and only requires a Bearer token from /auth or /get-card. The examples write it as $LASO_ID_TOKEN, exported from your saved credentials.

How it works

Call GET /search-merchants?q=MERCHANT_NAME with your Bearer token. By default this searches the USA prepaid card (/get-card) acceptance database. Pass card_type=Non-Reloadable International to search for the international prepaid card (/order-intl-card) instead:

# USA prepaid card acceptance (default)
curl "https://laso.finance/search-merchants?q=amazon" \
  -H "Authorization: Bearer $LASO_ID_TOKEN"

# International prepaid card acceptance
curl "https://laso.finance/search-merchants?q=amazon&card_type=Non-Reloadable%20International" \
  -H "Authorization: Bearer $LASO_ID_TOKEN"

The response includes a list of matching merchants with a status field:

Status	Meaning
`accepted`	The card has been successfully used at this merchant. Safe to proceed.
`not_accepted`	The card was declined at this merchant. Do not order a card for this merchant.
`unknown`	A transaction was attempted but the outcome is unclear. The card likely will still work.

If a merchant isn’t listed at all, it means no one has tried it yet — the card likely will still work there.

Example response

{
  "merchants": [
    {
      "name": "Amazon",
      "url": "amazon.com",
      "status": "accepted",
      "description": "Online retail"
    }
  ],
  "query": "amazon",
  "count": 1,
  "card_type": "Non-Reloadable U.S.",
  "note": "This database only contains merchants where Laso users have previously attempted a transaction."
}

When to use this

Before ordering a card — Check the merchant first to avoid wasting funds on a card that will be declined.
When a purchase fails — Search for the merchant to see if it’s known to be not_accepted.
To build confidence — If the merchant is listed as accepted, your agent can proceed without hesitation.

This endpoint is free. There’s no reason not to check before every purchase.

Get started

Spend

Banking

Wallet

Platform

Integrations

Check merchant compatibility before ordering a card

Why check first?

How it works

Example response

When to use this

​Why check first?

​How it works

​Example response

​When to use this

Why check first?

How it works

Example response

When to use this