fix: align SDK with actual API behavior

docs/getting-started/quickstart.md

@@ -18,7 +18,7 @@ client = FinWise()
 
 ```python
 accounts = client.accounts.list()
-for account in accounts.data:
+for account in accounts:
     print(f"{account.name}: {account.currency} {account.balance}")
 ```
 

docs/index.md

@@ -13,7 +13,7 @@ For the official API documentation, see [finwiseapp.io/docs/api](https://finwise
 
 - **Type-safe**: Full type hints and Pydantic models
 - **Automatic retries**: Exponential backoff for transient errors
-- **Pagination support**: Easy iteration through paginated results
+- **Simple API**: Returns plain Python lists for easy iteration
 - **Context manager**: Automatic resource cleanup
 
 ## Quick Example
@@ -25,7 +25,7 @@ client = FinWise(api_key="your-api-key")
 
 # List all accounts
 accounts = client.accounts.list()
-for account in accounts.data:
+for account in accounts:
     print(f"{account.name}: {account.currency} {account.balance}")
 ```
 

docs/reference/pagination.md

@@ -1,6 +1,7 @@
 # Pagination
 
-All list methods return a `PaginatedResponse` object for easy iteration through results.
+!!! note "API Behavior"
+    The FinWise API does not currently support pagination for list endpoints. All `list()` methods return all available items as a simple Python list.
 
 ## Basic Usage
 
@@ -9,67 +10,44 @@ from finwise import FinWise
 
 client = FinWise(api_key="your-api-key")
 
-# Get first page
-accounts = client.accounts.list(page_number=1, page_size=50)
+# Get all accounts
+accounts = client.accounts.list()
+print(f"Found {len(accounts)} accounts")
 
-print(f"Page {accounts.page_number} of {accounts.total_pages}")
-print(f"Showing {len(accounts)} of {accounts.total_count} accounts")
-```
-
-## PaginatedResponse Properties
-
-| Property | Type | Description |
-|----------|------|-------------|
-| `data` | `list` | Items on the current page |
-| `page_number` | `int` | Current page number (1-indexed) |
-| `page_size` | `int` | Items per page |
-| `total_count` | `int` | Total items across all pages |
-| `total_pages` | `int` | Total number of pages |
-| `has_next` | `bool` | Whether there's a next page |
-| `has_previous` | `bool` | Whether there's a previous page |
-
-## Iterating Through Items
-
-```python
-# Iterate through items on this page
-for account in accounts.data:
-    print(account.name)
-
-# Or iterate directly on the response
+# Iterate through items
 for account in accounts:
     print(account.name)
 
 # Access by index
-first_account = accounts[0]  # or accounts.data[0]
+first_account = accounts[0]
 ```
 
-## Fetching Multiple Pages
-
-```python
-# Check for more pages
-if accounts.has_next:
-    next_page = client.accounts.list(
-        page_number=accounts.page_number + 1,
-        page_size=50,
-    )
-```
+## List Methods
 
-## Iterating Through All Pages
+All list methods return a `list` of model objects:
 
-```python
-page_number = 1
-all_accounts = []
+| Method | Return Type |
+|--------|-------------|
+| `accounts.list()` | `list[Account]` |
+| `transactions.list()` | `list[Transaction]` |
+| `transaction_categories.list()` | `list[TransactionCategory]` |
+| `account_balances.list()` | `list[AccountBalance]` |
 
-while True:
-    accounts = client.accounts.list(
-        page_number=page_number,
-        page_size=100
-    )
-    all_accounts.extend(accounts.data)
+## Filtering
 
-    if not accounts.has_next:
-        break
-    page_number += 1
+While pagination is not supported, you can still filter results using available parameters:
 
-print(f"Fetched {len(all_accounts)} accounts")
+```python
+# Filter transactions by date range
+transactions = client.transactions.list(
+    start_date=date(2024, 1, 1),
+    end_date=date(2024, 1, 31),
+    type="expense",
+)
+
+# Filter by account
+transactions = client.transactions.list(account_id="acc_123")
+
+# Filter account balances
+balances = client.account_balances.list(account_id="acc_123")
 ```

docs/usage/account-balances.md

@@ -30,16 +30,16 @@ balance = client.account_balances.create(
 ```python
 balances = client.account_balances.list(account_id="acc_123")
 
-for balance in balances.data:
+for balance in balances:
     print(f"{balance.balance_date}: {balance.balance}")
 ```
 
 ## Get Aggregated Balance
 
-Get the total balance across all accounts:
+Get the total balance across all accounts for a specific currency:
 
 ```python
-summary = client.account_balances.aggregated()
+summary = client.account_balances.aggregated(currency="USD")
 print(f"Total: {summary.currency} {summary.total_balance}")
 print(f"Across {summary.account_count} accounts")
 ```
@@ -48,10 +48,14 @@ You can also get the balance as of a specific date:
 
 ```python
 summary = client.account_balances.aggregated(
+    currency="USD",
     as_of_date=date(2024, 1, 31)
 )
 ```
 
+!!! note "Currency Parameter"
+    The `currency` parameter specifies which currency to aggregate balances for (e.g., "USD", "EUR", "ZAR").
+
 ## Archive a Balance Record
 
 ```python

docs/usage/accounts.md

@@ -50,17 +50,9 @@ account = client.accounts.update(
 ## List Accounts
 
 ```python
-# Basic listing
 accounts = client.accounts.list()
-for account in accounts.data:
+for account in accounts:
     print(f"  - {account.name}")
-
-# With pagination
-accounts = client.accounts.list(page_number=1, page_size=50)
-print(f"Total accounts: {accounts.total_count}")
-
-if accounts.has_next:
-    next_page = client.accounts.list(page_number=2, page_size=50)
 ```
 
 ## Archive an Account

docs/usage/transaction-categories.md

@@ -31,7 +31,7 @@ subcategory = client.transaction_categories.create(
 ```python
 categories = client.transaction_categories.list()
 
-for cat in categories.data:
+for cat in categories:
     prefix = "  " if cat.is_subcategory else ""
     print(f"{prefix}{cat.name}")
 ```

docs/usage/transactions.md

@@ -46,24 +46,10 @@ transactions = client.transactions.list(
     type="expense",
 )
 
-for txn in transactions.data:
+for txn in transactions:
     print(f"{txn.transaction_date}: {txn.description} ({txn.amount})")
 ```
 
-## Get Aggregated Summary
-
-Get totals for a date range:
-
-```python
-summary = client.transactions.aggregated(
-    start_date=date(2024, 1, 1),
-    end_date=date(2024, 1, 31),
-)
-print(f"Income: {summary.total_income}")
-print(f"Expenses: {summary.total_expenses}")
-print(f"Net: {summary.net_amount}")
-```
-
 ## Archive a Transaction
 
 ```python

src/finwise/__init__.py

@@ -12,7 +12,7 @@
     >>>
     >>> # List accounts
     >>> accounts = client.accounts.list()
-    >>> for account in accounts.data:
+    >>> for account in accounts:
     ...     print(account.name)
     >>>
     >>> # Create a transaction
@@ -74,16 +74,12 @@
     AccountCreateRequest,
     AccountUpdateRequest,
     AggregatedBalance,
-    AggregatedTransactions,
     Transaction,
     TransactionCategory,
     TransactionCategoryCreateRequest,
     TransactionCreateRequest,
 )
 
-# Types
-from finwise.types import PaginatedResponse, PaginationParams
-
 __all__ = [
     # Version
     "__version__",
@@ -112,11 +108,7 @@
     # Models - Transaction
     "Transaction",
     "TransactionCreateRequest",
-    "AggregatedTransactions",
     # Models - Transaction Category
     "TransactionCategory",
     "TransactionCategoryCreateRequest",
-    # Types
-    "PaginatedResponse",
-    "PaginationParams",
 ]

src/finwise/exceptions.py

@@ -174,6 +174,42 @@ class FinWiseTimeoutError(FinWiseError):
     pass
 
 
+def _extract_error_message(response_body: dict[str, Any]) -> str:
+    """
+    Extract error message from API response formats.
+
+    The FinWise API returns errors in the format:
+        {"error": {"errors": [...], "name": "...", "message": "..."}}
+
+    This function handles multiple formats for robustness.
+
+    Args:
+        response_body: Parsed JSON response body.
+
+    Returns:
+        Extracted error message or a fallback message.
+    """
+    # Try top-level message first
+    if "message" in response_body and isinstance(response_body["message"], str):
+        return response_body["message"]
+
+    # Try nested error.message (actual API format)
+    if "error" in response_body and isinstance(response_body["error"], dict):
+        error_obj = response_body["error"]
+        if "message" in error_obj and isinstance(error_obj["message"], str):
+            return error_obj["message"]
+
+    # Try detail (FastAPI style)
+    if "detail" in response_body and isinstance(response_body["detail"], str):
+        return response_body["detail"]
+
+    # Fallback: include response body for debugging
+    if response_body:
+        return f"API error: {response_body}"
+
+    return "Unknown error (empty response body)"
+
+
 def raise_for_status(
     status_code: int,
     response_body: dict[str, Any],
@@ -190,7 +226,7 @@ def raise_for_status(
     Raises:
         FinWiseAPIError: Appropriate subclass based on status code.
     """
-    message = response_body.get("message", "Unknown error")
+    message = _extract_error_message(response_body)
     error_code = response_body.get("code")
 
     kwargs: dict[str, Any] = {

src/finwise/models/__init__.py

@@ -15,7 +15,6 @@
     BalanceType,
 )
 from finwise.models.transaction import (
-    AggregatedTransactions,
     Transaction,
     TransactionCreateRequest,
 )
@@ -40,7 +39,6 @@
     # Transaction
     "Transaction",
     "TransactionCreateRequest",
-    "AggregatedTransactions",
     # Transaction Category
     "TransactionCategory",
     "TransactionCategoryCreateRequest",

src/finwise/resources/account_balances.py

@@ -155,7 +155,7 @@ def aggregated(
         if as_of_date:
             params["asOfDate"] = as_of_date.isoformat()
         if currency:
-            params["currency"] = currency
+            params["currencyCode"] = currency
 
         response = self._transport.get(
             f"{self._path}/aggregated", params=params or None