diff --git a/app/JsonApi/V2/Accounts/AccountCollectionQuery.php b/app/JsonApi/V2/Accounts/AccountCollectionQuery.php
index 464256fe4a..759ca94ab9 100644
--- a/app/JsonApi/V2/Accounts/AccountCollectionQuery.php
+++ b/app/JsonApi/V2/Accounts/AccountCollectionQuery.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace FireflyIII\JsonApi\V2\Accounts;
 
 use FireflyIII\Models\Account;
+use FireflyIII\Rules\Account\IsValidAccountType;
 use FireflyIII\Rules\IsAllowedGroupAction;
 use FireflyIII\Rules\IsDateOrTime;
 use FireflyIII\Rules\IsValidDateRange;
@@ -20,6 +21,7 @@ class AccountCollectionQuery extends ResourceQuery
     public function rules(): array
     {
         Log::debug(__METHOD__);
+        $validFilters = config('api.valid_api_filters')[Account::class];
 
         return [
             'fields'        => [
@@ -47,7 +49,8 @@ class AccountCollectionQuery extends ResourceQuery
             'filter'        => [
                 'nullable',
                 'array',
-                JsonApiRule::filter(),
+                JsonApiRule::filter($validFilters),
+                new IsValidAccountType()
             ],
             'include'       => [
                 'nullable',
diff --git a/app/JsonApi/V2/Accounts/AccountRequest.php b/app/JsonApi/V2/Accounts/AccountRequest.php
index dfcca68373..82b2607982 100644
--- a/app/JsonApi/V2/Accounts/AccountRequest.php
+++ b/app/JsonApi/V2/Accounts/AccountRequest.php
@@ -2,6 +2,8 @@
 
 namespace FireflyIII\JsonApi\V2\Accounts;
 
+use FireflyIII\Rules\BelongsUser;
+use Illuminate\Support\Facades\Log;
 use Illuminate\Validation\Rule;
 use LaravelJsonApi\Laravel\Http\Requests\ResourceRequest;
 use LaravelJsonApi\Validation\Rule as JsonApiRule;
@@ -16,8 +18,17 @@ class AccountRequest extends ResourceRequest
      */
     public function rules(): array
     {
+        Log::debug(__METHOD__);
+        die('am i used');
         return [
-            // @TODO
+            'type' => [
+                new BelongsUser()
+            ],
+            'name' => [
+                'nullable',
+                'string',
+                'max:255',
+            ],
         ];
     }
 
diff --git a/app/JsonApi/V2/Accounts/AccountSchema.php b/app/JsonApi/V2/Accounts/AccountSchema.php
index 7dfca106e0..3a8bc3e4e4 100644
--- a/app/JsonApi/V2/Accounts/AccountSchema.php
+++ b/app/JsonApi/V2/Accounts/AccountSchema.php
@@ -79,11 +79,13 @@ class AccountSchema extends Schema
      */
     public function filters(): array
     {
-        //        Log::debug(__METHOD__);
-
-        return [
-            Filter::make('id'),
-        ];
+        Log::debug(__METHOD__);
+        $array  = [];
+        $config = config('api.valid_api_filters')[Account::class];
+        foreach ($config as $entry) {
+            $array[] = Filter::make($entry);
+        }
+        return $array;
     }
 
     public function repository(): AccountRepository
diff --git a/app/JsonApi/V2/Accounts/Capabilities/AccountQuery.php b/app/JsonApi/V2/Accounts/Capabilities/AccountQuery.php
index a0c40474d3..c7bdc57dbb 100644
--- a/app/JsonApi/V2/Accounts/Capabilities/AccountQuery.php
+++ b/app/JsonApi/V2/Accounts/Capabilities/AccountQuery.php
@@ -23,6 +23,8 @@ declare(strict_types=1);
 
 namespace FireflyIII\JsonApi\V2\Accounts\Capabilities;
 
+use FireflyIII\Models\Account;
+use FireflyIII\Support\Http\Api\AccountFilter;
 use FireflyIII\Support\JsonApi\CollectsCustomParameters;
 use FireflyIII\Support\JsonApi\Concerns\UsergroupAware;
 use FireflyIII\Support\JsonApi\Enrichments\AccountEnrichment;
@@ -44,6 +46,7 @@ class AccountQuery extends QueryAll implements HasPagination
     use UsergroupAware;
     use ValidateSortParameters;
     use CollectsCustomParameters;
+    use AccountFilter;
 
     #[\Override]
     /**
@@ -56,6 +59,7 @@ class AccountQuery extends QueryAll implements HasPagination
         Log::debug(__METHOD__);
         // collect filters
         $filters = $this->queryParameters->filter();
+
         // collect sort options
         $sort = $this->queryParameters->sortFields();
         // collect pagination based on the page
@@ -77,7 +81,7 @@ class AccountQuery extends QueryAll implements HasPagination
 
         // add sort and filter parameters to the query.
         $query = $this->addSortParams($query, $sort);
-        $query = $this->addFilterParams('account', $query, $filters);
+        $query = $this->addFilterParams(Account::class, $query, $filters);
 
 
         // collect the result.
diff --git a/app/Policies/AccountPolicy.php b/app/Policies/AccountPolicy.php
index 9820911f1c..3e4b6f85c6 100644
--- a/app/Policies/AccountPolicy.php
+++ b/app/Policies/AccountPolicy.php
@@ -25,6 +25,7 @@ namespace FireflyIII\Policies;
 
 use FireflyIII\Models\Account;
 use FireflyIII\User;
+use Illuminate\Support\Facades\Log;
 
 class AccountPolicy
 {
@@ -33,7 +34,7 @@ class AccountPolicy
      */
     public function view(User $user, Account $account): bool
     {
-        die('OK');
+        die('OK1');
         return true;
 
         return auth()->check() && $user->id === $account->user_id;
@@ -46,9 +47,7 @@ class AccountPolicy
      */
     public function viewAny(): bool
     {
-        die('OK');
-        return true;
-
+        Log::debug(__METHOD__);
         return auth()->check();
     }
 
diff --git a/app/Rules/Account/IsValidAccountType.php b/app/Rules/Account/IsValidAccountType.php
new file mode 100644
index 0000000000..0bace91250
--- /dev/null
+++ b/app/Rules/Account/IsValidAccountType.php
@@ -0,0 +1,57 @@
+<?php
+/*
+ * IsValidAccountType.php
+ * Copyright (c) 2024 james@firefly-iii.org.
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see https://www.gnu.org/licenses/.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Rules\Account;
+
+use Closure;
+use FireflyIII\Support\Http\Api\AccountFilter;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class IsValidAccountType implements ValidationRule
+{
+    use AccountFilter;
+
+    /**
+     * @inheritDoc
+     */
+    #[\Override] public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+
+        if (!is_array($value)) {
+            $value = [$value];
+        }
+        // only check the type.
+        if (array_key_exists('type', $value)) {
+            $value    = $value['type'];
+            $filtered = [];
+            $keys     = array_keys($this->types);
+            /** @var mixed $entry */
+            foreach ($value as $entry) {
+                $entry = (string) $entry;
+                if (!in_array($entry, $keys)) {
+                    $fail('something');
+                }
+            }
+        }
+    }
+}
diff --git a/app/Support/Http/Api/AccountFilter.php b/app/Support/Http/Api/AccountFilter.php
index 7c41a9d6c5..4f28f35710 100644
--- a/app/Support/Http/Api/AccountFilter.php
+++ b/app/Support/Http/Api/AccountFilter.php
@@ -30,63 +30,62 @@ use FireflyIII\Models\AccountType;
  */
 trait AccountFilter
 {
+    protected array $types = [
+        'all'                        => [
+            AccountType::DEFAULT,
+            AccountType::CASH,
+            AccountType::ASSET,
+            AccountType::EXPENSE,
+            AccountType::REVENUE,
+            AccountType::INITIAL_BALANCE,
+            AccountType::BENEFICIARY,
+            AccountType::IMPORT,
+            AccountType::RECONCILIATION,
+            AccountType::LOAN,
+            AccountType::DEBT,
+            AccountType::MORTGAGE,
+        ],
+        'asset'                      => [AccountType::DEFAULT, AccountType::ASSET],
+        'cash'                       => [AccountType::CASH],
+        'expense'                    => [AccountType::EXPENSE, AccountType::BENEFICIARY],
+        'revenue'                    => [AccountType::REVENUE],
+        'special'                    => [AccountType::CASH, AccountType::INITIAL_BALANCE, AccountType::IMPORT, AccountType::RECONCILIATION],
+        'hidden'                     => [AccountType::INITIAL_BALANCE, AccountType::IMPORT, AccountType::RECONCILIATION],
+        'liability'                  => [AccountType::DEBT, AccountType::LOAN, AccountType::MORTGAGE, AccountType::CREDITCARD],
+        'liabilities'                => [AccountType::DEBT, AccountType::LOAN, AccountType::MORTGAGE, AccountType::CREDITCARD],
+        AccountType::DEFAULT         => [AccountType::DEFAULT],
+        AccountType::CASH            => [AccountType::CASH],
+        AccountType::ASSET           => [AccountType::ASSET],
+        AccountType::EXPENSE         => [AccountType::EXPENSE],
+        AccountType::REVENUE         => [AccountType::REVENUE],
+        AccountType::INITIAL_BALANCE => [AccountType::INITIAL_BALANCE],
+        AccountType::BENEFICIARY     => [AccountType::BENEFICIARY],
+        AccountType::IMPORT          => [AccountType::IMPORT],
+        AccountType::RECONCILIATION  => [AccountType::RECONCILIATION],
+        AccountType::LOAN            => [AccountType::LOAN],
+        AccountType::MORTGAGE        => [AccountType::MORTGAGE],
+        AccountType::DEBT            => [AccountType::DEBT],
+        AccountType::CREDITCARD      => [AccountType::CREDITCARD],
+        'default account'            => [AccountType::DEFAULT],
+        'cash account'               => [AccountType::CASH],
+        'asset account'              => [AccountType::ASSET],
+        'expense account'            => [AccountType::EXPENSE],
+        'revenue account'            => [AccountType::REVENUE],
+        'initial balance account'    => [AccountType::INITIAL_BALANCE],
+        'reconciliation'             => [AccountType::RECONCILIATION],
+        'loan'                       => [AccountType::LOAN],
+        'mortgage'                   => [AccountType::MORTGAGE],
+        'debt'                       => [AccountType::DEBT],
+        'credit card'                => [AccountType::CREDITCARD],
+        'credit-card'                => [AccountType::CREDITCARD],
+        'creditcard'                 => [AccountType::CREDITCARD],
+        'cc'                         => [AccountType::CREDITCARD],
+    ];
     /**
      * All the available types.
      */
     protected function mapAccountTypes(string $type): array
     {
-        $types = [
-            'all'                        => [
-                AccountType::DEFAULT,
-                AccountType::CASH,
-                AccountType::ASSET,
-                AccountType::EXPENSE,
-                AccountType::REVENUE,
-                AccountType::INITIAL_BALANCE,
-                AccountType::BENEFICIARY,
-                AccountType::IMPORT,
-                AccountType::RECONCILIATION,
-                AccountType::LOAN,
-                AccountType::DEBT,
-                AccountType::MORTGAGE,
-            ],
-            'asset'                      => [AccountType::DEFAULT, AccountType::ASSET],
-            'cash'                       => [AccountType::CASH],
-            'expense'                    => [AccountType::EXPENSE, AccountType::BENEFICIARY],
-            'revenue'                    => [AccountType::REVENUE],
-            'special'                    => [AccountType::CASH, AccountType::INITIAL_BALANCE, AccountType::IMPORT, AccountType::RECONCILIATION],
-            'hidden'                     => [AccountType::INITIAL_BALANCE, AccountType::IMPORT, AccountType::RECONCILIATION],
-            'liability'                  => [AccountType::DEBT, AccountType::LOAN, AccountType::MORTGAGE, AccountType::CREDITCARD],
-            'liabilities'                => [AccountType::DEBT, AccountType::LOAN, AccountType::MORTGAGE, AccountType::CREDITCARD],
-            AccountType::DEFAULT         => [AccountType::DEFAULT],
-            AccountType::CASH            => [AccountType::CASH],
-            AccountType::ASSET           => [AccountType::ASSET],
-            AccountType::EXPENSE         => [AccountType::EXPENSE],
-            AccountType::REVENUE         => [AccountType::REVENUE],
-            AccountType::INITIAL_BALANCE => [AccountType::INITIAL_BALANCE],
-            AccountType::BENEFICIARY     => [AccountType::BENEFICIARY],
-            AccountType::IMPORT          => [AccountType::IMPORT],
-            AccountType::RECONCILIATION  => [AccountType::RECONCILIATION],
-            AccountType::LOAN            => [AccountType::LOAN],
-            AccountType::MORTGAGE        => [AccountType::MORTGAGE],
-            AccountType::DEBT            => [AccountType::DEBT],
-            AccountType::CREDITCARD      => [AccountType::CREDITCARD],
-            'default account'            => [AccountType::DEFAULT],
-            'cash account'               => [AccountType::CASH],
-            'asset account'              => [AccountType::ASSET],
-            'expense account'            => [AccountType::EXPENSE],
-            'revenue account'            => [AccountType::REVENUE],
-            'initial balance account'    => [AccountType::INITIAL_BALANCE],
-            'reconciliation'             => [AccountType::RECONCILIATION],
-            'loan'                       => [AccountType::LOAN],
-            'mortgage'                   => [AccountType::MORTGAGE],
-            'debt'                       => [AccountType::DEBT],
-            'credit card'                => [AccountType::CREDITCARD],
-            'credit-card'                => [AccountType::CREDITCARD],
-            'creditcard'                 => [AccountType::CREDITCARD],
-            'cc'                         => [AccountType::CREDITCARD],
-        ];
-
-        return $types[$type] ?? $types['all'];
+        return $this->types[$type] ?? $this->types['all'];
     }
 }
diff --git a/app/Support/JsonApi/ExpandsQuery.php b/app/Support/JsonApi/ExpandsQuery.php
index e633fdb908..529bd780b8 100644
--- a/app/Support/JsonApi/ExpandsQuery.php
+++ b/app/Support/JsonApi/ExpandsQuery.php
@@ -23,8 +23,10 @@ declare(strict_types=1);
 
 namespace FireflyIII\Support\JsonApi;
 
+use FireflyIII\Models\Account;
 use FireflyIII\Support\Http\Api\AccountFilter;
 use Illuminate\Contracts\Database\Eloquent\Builder;
+use Illuminate\Support\Facades\Log;
 use LaravelJsonApi\Core\Query\FilterParameters;
 use LaravelJsonApi\Core\Query\SortFields;
 
@@ -51,35 +53,80 @@ trait ExpandsQuery
         return $query;
     }
 
+    private function parseAccountTypeFilter(array $value): array
+    {
+        $return = [];
+        foreach ($value as $entry) {
+            $return = array_merge($return, $this->mapAccountTypes($entry));
+        }
+        return array_unique($return);
+    }
+
+    private function parseAllFilters(string $class, FilterParameters $filters): array
+    {
+        $config = config('api.valid_api_filters')[$class];
+        $parsed = [];
+        foreach ($filters->all() as $filter) {
+            $key = $filter->key();
+            if (!in_array($key, $config, true)) {
+                continue;
+            }
+            // make array if not array:
+            $value = $filter->value();
+            if (null === $value) {
+                continue;
+            }
+            if (!is_array($value)) {
+                $value = [$value];
+            }
+
+            switch ($filter->key()) {
+                case 'name':
+                    $parsed['name'] = $value;
+                    break;
+                case 'type':
+                    $parsed['type'] = $this->parseAccountTypeFilter($value);
+                    break;
+            }
+        }
+        return $parsed;
+    }
+
     final protected function addFilterParams(string $class, Builder $query, ?FilterParameters $filters): Builder
     {
+        Log::debug(__METHOD__);
         if (null === $filters) {
             return $query;
         }
-        $config      = config(sprintf('firefly.valid_query_filters.%s', $class)) ?? [];
         if (0 === count($filters->all())) {
             return $query;
         }
-        $query->where(function (Builder $q) use ($config, $filters): void {
-            foreach ($filters->all() as $filter) {
-                if (in_array($filter->key(), $config, true)) {
-                    foreach ($filter->value() as $value) {
-                        $q->where($filter->key(), 'LIKE', sprintf('%%%s%%', $value));
+        // parse filters valid for this class.
+        $parsed = $this->parseAllFilters($class, $filters);
+
+        // expand query for each query filter
+        $config = config('api.valid_query_filters')[$class];
+        $query->where(function (Builder $q) use ($config, $parsed): void {
+            foreach ($parsed as $key => $filter) {
+                if (in_array($key, $config, true)) {
+                    Log::debug(sprintf('Add query filter "%s"', $key));
+                    // add type to query:
+                    foreach ($filter as $value) {
+                        $q->where($key, 'LIKE', sprintf('%%%s%%', $value));
                     }
                 }
             }
         });
 
-        // some filters are special, i.e. the account type filter.
-        $typeFilters = $filters->value('type', false);
-        if (false !== $typeFilters && count($typeFilters) > 0) {
-            $query->leftJoin('account_types', 'accounts.account_type_id', '=', 'account_types.id');
-            foreach ($typeFilters as $typeFilter) {
-                $types = $this->mapAccountTypes($typeFilter);
-                $query->whereIn('account_types.type', $types);
+        // TODO this is special treatment, but alas, unavoidable right now.
+        if ($class === Account::class && array_key_exists('type', $parsed)) {
+            if (count($parsed['type']) > 0) {
+                $query->leftJoin('account_types', 'accounts.account_type_id', '=', 'account_types.id');
+                $query->whereIn('account_types.type', $parsed['type']);
             }
         }
 
+
         return $query;
     }
 }
diff --git a/app/Support/JsonApi/ValidateSortParameters.php b/app/Support/JsonApi/ValidateSortParameters.php
index 83d2a52491..fecc424113 100644
--- a/app/Support/JsonApi/ValidateSortParameters.php
+++ b/app/Support/JsonApi/ValidateSortParameters.php
@@ -33,7 +33,7 @@ trait ValidateSortParameters
             return false;
         }
 
-        $config = config(sprintf('firefly.full_data_set.%s', $class)) ?? [];
+        $config = config(sprintf('api.full_data_set.%s', $class)) ?? [];
 
         foreach ($params->all() as $field) {
             if (in_array($field->name(), $config, true)) {
diff --git a/config/api.php b/config/api.php
new file mode 100644
index 0000000000..7ef00a2d63
--- /dev/null
+++ b/config/api.php
@@ -0,0 +1,58 @@
+<?php
+/*
+ * api.php
+ * Copyright (c) 2024 james@firefly-iii.org.
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see https://www.gnu.org/licenses/.
+ */
+
+declare(strict_types=1);
+
+use FireflyIII\Models\Account;
+
+return [
+
+    // allowed filters (search) for APIs
+    'filters'             => [
+        'allowed' => [
+            'accounts' => [
+                'name'               => 'string',
+                'active'             => 'boolean',
+                'iban'               => 'iban',
+                'balance'            => 'numeric',
+                'last_activity'      => 'date',
+                'balance_difference' => 'numeric',
+            ],
+        ],
+    ],
+
+    // allowed sort columns for APIs
+    'sorting'             => [
+        'allowed' => [
+            'transactions' => ['description', 'amount'],
+            'accounts'     => ['name', 'active', 'iban', 'balance', 'last_activity', 'balance_difference', 'current_debt'],
+        ],
+    ],
+    'full_data_set'       => [
+        'account' => ['last_activity', 'balance_difference', 'current_balance', 'current_debt'],
+    ],
+    'valid_query_filters' => [
+        Account::class => ['id','name', 'iban', 'active'],
+    ],
+    'valid_api_filters'   => [
+        Account::class => ['id', 'name', 'iban', 'active', 'type'],
+    ],
+];
diff --git a/config/firefly.php b/config/firefly.php
index 3ee8912d49..730ca7bf2c 100644
--- a/config/firefly.php
+++ b/config/firefly.php
@@ -920,31 +920,4 @@ return [
     // preselected account lists possibilities:
     'preselected_accounts'         => ['all', 'assets', 'liabilities'],
 
-    // allowed filters (search) for APIs
-    'filters'                      => [
-        'allowed' => [
-            'accounts' => [
-                'name'               => 'string',
-                'active'             => 'boolean',
-                'iban'               => 'iban',
-                'balance'            => 'numeric',
-                'last_activity'      => 'date',
-                'balance_difference' => 'numeric',
-            ],
-        ],
-    ],
-
-    // allowed sort columns for APIs
-    'sorting'                      => [
-        'allowed' => [
-            'transactions' => ['description', 'amount'],
-            'accounts'     => ['name', 'active', 'iban', 'balance', 'last_activity', 'balance_difference', 'current_debt'],
-        ],
-    ],
-    'full_data_set'                => [
-        'account' => ['last_activity', 'balance_difference', 'current_balance', 'current_debt'],
-    ],
-    'valid_query_filters'          => [
-        'account' => ['name', 'iban', 'active'],
-    ],
 ];