diff --git a/Model/Resolver/PostnlTimeframes.php b/Model/Resolver/PostnlTimeframes.php
new file mode 100644
index 00000000..5bd9e04c
--- /dev/null
+++ b/Model/Resolver/PostnlTimeframes.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace TIG\PostNL\Model\Resolver;
+
+use Magento\Checkout\Model\Session;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Exception\GraphQlInputException;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Quote\Model\MaskedQuoteIdToQuoteId;
+use Magento\Quote\Model\Quote;
+use TIG\PostNL\Service\Timeframe\Resolver;
+
+class PostnlTimeframes implements ResolverInterface
+{
+    public function __construct(
+        protected Session $checkoutSession,
+        protected MaskedQuoteIdToQuoteId $maskedQuoteIdToQuoteId,
+        protected Resolver $timeframeResolver
+    ) {
+    }
+    
+    /**
+     * @inheritdoc
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) {
+        /** @var \Magento\GraphQl\Model\Query\ContextInterface $context */
+        if (!isset($value['model']) && empty($args['cart_id'])) {
+            throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
+        }
+
+        $cartId = $args['cart_id'] ? $this->maskedQuoteIdToQuoteId->execute($args['cart_id']) : $value['model']->getId();
+        $this->checkoutSession->setQuoteId($cartId);
+        /** @var Quote $quote */
+        $quote = $this->checkoutSession->getQuote();
+
+        if (!isset($args['address'])) {
+            $args['address'] = $quote->getShippingAddress();
+        }
+
+        $timeframes = $this->timeframeResolver->processTimeframes($args['address']);
+
+        $timeframes['timeframes'] = array_merge(...$timeframes['timeframes']);
+
+        return $timeframes;
+    }
+}
+
diff --git a/Model/Resolver/SetPostnlShippingInformation.php b/Model/Resolver/SetPostnlShippingInformation.php
new file mode 100644
index 00000000..0f213eaf
--- /dev/null
+++ b/Model/Resolver/SetPostnlShippingInformation.php
@@ -0,0 +1,144 @@
+<?php
+
+declare(strict_types=1);
+
+namespace TIG\PostNL\Model\Resolver;
+
+use Magento\Checkout\Model\Session;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Exception\GraphQlInputException;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Quote\Model\MaskedQuoteIdToQuoteId;
+use Magento\Quote\Model\Quote;
+use Magento\Quote\Model\QuoteRepository;
+use TIG\PostNL\Api\Data\OrderInterface;
+use TIG\PostNL\Api\OrderRepositoryInterface;
+use TIG\PostNL\Service\Action\OrderSave;
+use TIG\PostNL\Service\Timeframe\Resolver;
+
+class SetPostnlShippingInformation implements ResolverInterface
+{
+    protected array $cache = [];
+
+    public function __construct(
+        protected Session $checkoutSession,
+        protected MaskedQuoteIdToQuoteId $maskedQuoteIdToQuoteId,
+        protected QuoteRepository $quoteRepository,
+        protected OrderSave $orderSave,
+        protected Resolver $timeframeResolver,
+        protected OrderRepositoryInterface $orderRepository
+    ) {
+    }
+    /**
+     * @inheritdoc
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) {
+        $cartId = $this->maskedQuoteIdToQuoteId->execute($args['input']['cart_id']);
+        /** @var Quote $quote */
+        $quote = $this->quoteRepository->get($cartId);
+        $this->checkoutSession->setQuote($quote);
+        $this->checkoutSession->replaceQuote($quote);
+
+        $shippingAddress = $quote->getShippingAddress();
+
+        $request = [
+            'type' => match ($args['input']['type']) {
+                'delivery' => 'delivery',
+                'pickup' => 'pickup',
+                default => throw new GraphQlInputException(__('Invalid delivery type provided.')),
+            },
+            'country' => $shippingAddress->getCountryId(),
+            'quote_id' => $quote->getId(),
+            'address' => [
+                'country' => $shippingAddress->getCountryId(),
+                'street' => $shippingAddress->getStreet(),
+                'postcode' => $shippingAddress->getPostcode(),
+                'housenumber' => $shippingAddress->getStreetLine(2),
+            ],
+            'customerData' => [
+                'country' => $shippingAddress->getCountryId(),
+                'street' => $shippingAddress->getStreet(),
+                'postcode' => $shippingAddress->getPostcode(),
+                'housenumber' => $shippingAddress->getStreetLine(2),
+                'firstname' => $shippingAddress->getFirstname(),
+                'lastname' => $shippingAddress->getLastname(),
+                'telephone' => $shippingAddress->getTelephone()
+            ],
+            'stated_address_only' => (bool)isset($args['input']['stated_address_only']) ? $args['input']['stated_address_only'] : false,
+        ];
+
+        if ($request['type'] === 'pickup') {
+            $request = $this->processPickupRequest($request, $args['input']);
+        }
+        if ($request['type'] === 'delivery') {
+            $request = $this->processDeliveryRequest($request, $args['input']);
+        }
+
+        $this->orderSave->saveDeliveryOption(
+            $this->getPostnlOrder($quote),
+            $request
+        );
+
+        return ['model' => $quote];
+    }
+
+    protected function getPostnlOrder(Quote $quote): OrderInterface
+    {
+        $quoteId = $quote->getId();
+
+        if (!array_key_exists($quoteId, $this->cache)) {
+            $this->cache[$quoteId] = $this->orderRepository->getByQuoteId($quoteId);
+            if (!$this->cache[$quoteId]) {
+                $this->cache[$quoteId] = $this->orderRepository->create();
+            }
+            // Re-check that this order wasn't created an saved, in this case we need a new one.
+            if ($this->cache[$quoteId]->getOrderId()) {
+                $this->cache[$quoteId] = $this->orderRepository->create();
+            }
+            // Be sure to set quote id in the new model
+            $this->cache[$quoteId]->setQuoteId($quoteId);
+        }
+
+        return $this->cache[$quoteId];
+    }
+
+    public function processDeliveryRequest(array $request, array $input): array
+    {
+        $request['option'] = $input['option'] ?? null;
+        $request['date'] = $input['date'] ?? null;
+        $request['from'] = $input['from'] ?? null;
+        $request['to'] = $input['to'] ?? null;
+
+        return $request;
+    }
+
+    public function processPickupRequest(array $request, array $input): array
+    {
+        // TODO: Fully implement logic: https://github.com/postnl/postnl-magento2-hyva-checkout/blob/96dac6770ff055b24020db95c53fef2a788870d2/Magewire/SelectPickup.php#L194
+        $pickupLocation = $this->getPickupLocation($input['pickup_location_id']);
+        $request['option'] = $input['option'] ?? 'PG';
+        $request['from'] = $input['from'] ?? '15:00:00';
+        $request['date'] = $input['date'] ?? null;
+        $request['to'] = $input['to'] ?? null;
+        $request['LocationCode'] = $input['pickup_location_id'];
+        $request['name'] = $pickupLocation?->getName();
+        $request['RetailNetworkID'] = $pickupLocation?->getNetworkId();
+        $request['address'] = $pickupLocation?->getAddressArray();
+
+        return $request;
+    }
+
+    public function getPickupLocation(int $quoteId): ?\stdClass
+    {
+        // TODO: implement https://github.com/postnl/postnl-magento2-hyva-checkout/blob/96dac6770ff055b24020db95c53fef2a788870d2/Magewire/SelectPickup.php#L194
+        return null;
+    }
+}
+
diff --git a/etc/schema.graphqls b/etc/schema.graphqls
new file mode 100644
index 00000000..d3a75d71
--- /dev/null
+++ b/etc/schema.graphqls
@@ -0,0 +1,46 @@
+
+type Query {
+    postnlTimeframes (
+        cart_id: String! @doc(description: "Query by cart_id."),
+        address: PostNlAddressInput @doc(description: "Query by address."),
+    ) : PostnlTimeframesOutput @resolver( class: "TIG\\PostNL\\Model\\Resolver\\PostnlTimeframes") @doc(description: "Query by Get the timeframes for the postnl shipping methods.")
+}
+
+type Mutation {
+    setPostnlShippingInformation (
+        input: PostnlShippingInformationInput! @doc(description: "Mutation to set the postnl shipping information.")
+    ) : Cart @resolver( class: "TIG\\PostNL\\Model\\Resolver\\SetPostnlShippingInformation") @doc(description: "Query by Get the timeframes for the postnl shipping methods.")
+}
+
+input PostnlShippingInformationInput @doc(description: "Input for the postnl shipping information.") {
+    cart_id: String! @doc(description: "The cart ID for which the shipping information is being set.")
+    type: String! @doc(description: "The type of postnl delivery, either delivery or pickup.")
+    option: String!
+    date: String @doc(description: "The date of the delivery or pickup option.")
+    from: String @doc(description: "The start time of the delivery or pickup option.")
+    to: String @doc(description: "The end time of the delivery or pickup option.")
+    name: String @doc(description: "The name of the person receiving the delivery or pickup.")
+    pickup_location_id: String @doc(description: "The location code for the pickup point, if applicable.")
+    stated_address_only: Boolean @doc(description: "Should delivery only be done at the stated address.")
+}
+
+input PostNlAddressInput @doc(description: "address details needed for postnl") {
+    street: [String!]! @doc(description: "An array containing the street for the billing or shipping address.")
+    postcode: String! @doc(description: "The ZIP or postal code of the billing or shipping address.")
+    housenumber: String @doc(description: "The house number of the billing or shipping address.")
+    country: String! @doc(description: "The country code and label for the billing or shipping address.")
+}
+
+type PostnlTimeframesOutput {
+    timeframes: [PostnlTimeframes] @doc(description: "The result of the timeframes request.")
+}
+
+type PostnlTimeframes {
+    day: String @doc(description: "The day of the timeframe.")
+    from: String @doc(description: "The start time of the timeframe.")
+    from_friendly: String @doc(description: "The start time of the timeframe in a human-readable format.")
+    to: String @doc(description: "The end time of the timeframe.")
+    to_friendly: String @doc(description: "The end time of the timeframe in a human-readable format.")
+    option: String @doc(description: "The option of the timeframe.")
+    date: String @doc(description: "The date of the timeframe.")
+}