diff --git a/handler/lib/serde/nordigen.py b/handler/lib/serde/nordigen.py
new file mode 100644
index 0000000..f546526
--- /dev/null
+++ b/handler/lib/serde/nordigen.py
@@ -0,0 +1,84 @@
+from serde import Model, fields
+
+
+class Amount(Model):
+    amount: fields.Str()
+    currency: fields.Str()
+
+
+class Transaction(Model):
+    bookingDate: fields.Date()
+    proprietaryBankTransactionCode: fields.Optional(fields.Str())
+    remittanceInformationUnstructured: fields.Optional(fields.Str())
+    transactionAmount: fields.Nested(Amount)
+    transactionId: fields.Str()
+
+
+class Pending(Transaction):
+    pass
+
+
+class Booked(Transaction):
+    pass
+
+
+class Transactions(Model):
+    pending: fields.List(Pending)
+    booked: fields.List(Booked)
+
+
+class TXRoot(Model):
+    transactions: fields.Nested(Transactions)
+
+
+class AccessToken(Model):
+    access: fields.Str()
+
+
+class Institution(Model):
+    id: fields.Str()
+    name: fields.Str()
+    bic: fields.Str()
+    transaction_total_days: fields.Str()
+    countries: fields.List()
+    logo: fields.Url()
+
+
+class Institutions(Model):
+    institutions: fields.List(Institution)
+
+
+class Agreement(Model):
+    id: fields.Str()
+    created: fields.DateTime()
+    redirect: fields.Url()
+    status: fields.Str()
+    institution_id: fields.Str()
+    agreement: fields.Str()
+    reference: fields.Str()
+    accounts: fields.List()
+    link: fields.Url()
+    ssn: fields.Literal(None)  # ?
+    account_selection: fields.Bool()
+    redirect_immediate: fields.Bool()
+
+
+class Requisitions(Model):
+    count: fields.Int()
+    next: fields.Literal(None)  # wrong
+    previous: fields.Literal(None)  # wrong
+    results: fields.List(Agreement)
+
+
+class Account(Model):
+    resourceId: fields.Str()
+    iban: fields.Str()
+    bban: fields.Str()
+    currency: fields.Str()
+    ownerName: fields.Str()
+    status: fields.Str()
+    details: fields.Str()
+
+
+class AccountDetails(Model):
+    account: fields.Nested(Account)