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POST
/
preauth
curl https://production.methodfi.com/preauth \
  -X POST \
  -H "Method-Version: 2026-03-30" \
  -H "Authorization: Bearer sk_WyZEWVfTcH7GqmPzUPk65Vjc" \
  -H "Content-Type: application/json" \
  -d '{
    "card": {
      "bin6": "411111",
      "last4": "1234",
      "first_name": "Jane",
      "last_name": "Doe",
      "phone": "+15555555555",
      "zip": "10001"
    },
    "purchase": {
      "amount": 9999,
      "mcc": "4511",
      "ip_address": "203.0.113.42",
      "txn_time": "2026-05-28T14:00:00Z"
    }
  }'

{
  "id": "preauth_qV7kRaFm4JNxw",
  "account_id": "acc_4m9amk4KFiaQX",
  "status": "completed",
  "verified_ownership": "match",
  "card_standing": "open",
  "success_likelihood": 0.87,
  "optimal_retry_date": "2026-06-02",
  "error": null,
  "metadata": null,
  "created_at": "2026-05-28T14:00:00.000Z",
  "updated_at": "2026-05-28T14:00:00.180Z"
}
Computes a PreauthSignals assessment for a given card or account. Provide either an account_id for an authenticated Method Account, or a card object with raw card identifiers. Optionally include purchase context to improve the prediction.
Exactly one of account_id or card is required. Providing both will return a 400 error.

​
Body

​
Returns

Returns a PreauthSignals object. 
curl https://production.methodfi.com/preauth \
  -X POST \
  -H "Method-Version: 2026-03-30" \
  -H "Authorization: Bearer sk_WyZEWVfTcH7GqmPzUPk65Vjc" \
  -H "Content-Type: application/json" \
  -d '{
    "card": {
      "bin6": "411111",
      "last4": "1234",
      "first_name": "Jane",
      "last_name": "Doe",
      "phone": "+15555555555",
      "zip": "10001"
    },
    "purchase": {
      "amount": 9999,
      "mcc": "4511",
      "ip_address": "203.0.113.42",
      "txn_time": "2026-05-28T14:00:00Z"
    }
  }'

{
  "id": "preauth_qV7kRaFm4JNxw",
  "account_id": "acc_4m9amk4KFiaQX",
  "status": "completed",
  "verified_ownership": "match",
  "card_standing": "open",
  "success_likelihood": 0.87,
  "optimal_retry_date": "2026-06-02",
  "error": null,
  "metadata": null,
  "created_at": "2026-05-28T14:00:00.000Z",
  "updated_at": "2026-05-28T14:00:00.180Z"
}