{"id":74413,"date":"2026-02-20T16:06:12","date_gmt":"2026-02-20T22:06:12","guid":{"rendered":"https:\/\/www.shipstation.com\/?page_id=74413"},"modified":"2026-04-27T16:48:38","modified_gmt":"2026-04-27T21:48:38","slug":"shipping","status":"publish","type":"page","link":"https:\/\/www.shipstation.com\/en-gb\/fulfillment\/api\/shipping\/","title":{"rendered":"Multi-Carrier Shipping API for Smarter Fulf&#8230;"},"content":{"rendered":"\n\n\n<section class=\"wp-block-shipstation-hero block not-prose padding-top--sm padding-bottom--lg\">\n    <div class=\"\">\n        <div class=\"container\">\n            <div class=\"hero items-start\">\n                <div class=\"hero-content \">\n                                                                    <h1>Multi-carrier shipping API for smarter fulfillment<\/h1>\n                                                    <div class=\"lead\"><p>Ship faster and smarter with a multi-carrier shipping API that plugs directly into your tech stack. ShipStation API powers every shipment with intelligence shaped by billions of deliveries across a global network. Rate shop, generate labels, and stay compliant across 200+ carriers without slowing down your operations.<\/p><\/div>\n                                                    <div class=\"btn-group\">\n                                                                                    <a href=\"https:\/\/www.shipengine.com\/signup\/\" class=\"btn btn--primary\" target=\"_self\">\n                                    Start Shipping Now                                <\/a>\n                                                                            \n                                                                                    <a href=\"https:\/\/www.shipengine.com\/contact\/\" class=\"btn outline btn--secondary\" target=\"_self\">\n                                    Talk to an Expert                                <\/a>\n                                                                        <\/div>\n                                            <\/div>\n                            <div class=\"hero-media \">\n                                            <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/multi-carrier-shipping-api-for-smarter-fulfillment-260220-1603.webp\" alt=\"Multi-carrier shipping API\" width=\"900\" height=\"675\" loading=\"eager\" \/>\n                                    <\/div>\n                                    <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n\n<section class=\"wp-block-shipstation-logo-marquee block not-prose\">\n    <div class=\"bg-white background--full content-theme--light \">\n        <div>\n            <div class=\"container\">\n                    <div class=\"content content-align-center items-center\">\n                                            <p class=\"eyebrow\">    Connected to the platforms that power your business<\/p>\n                                        \n                                        \n                                        \n                                        \n                                    <\/div>\n                    <div class=\"logo-marquee\">\n                <div class=\"fade-edges \">\n                    <div class=\"slider\">\n                        <ul class=\"animate-infinite-scroll\">\n                                                                                                <li>\n                                        <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Paypal-icon-card.svg\" \n                                             alt=\"Paypal logo\" \n                                             width=\"94\" \n                                             height=\"94\" \n                                             loading=\"lazy\" \/>\n                                    <\/li>\n                                                                                                                                <li>\n               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src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/USPS-icon-card.svg\" \n                                             alt=\"USPS logo\" \n                                             width=\"94\" \n                                             height=\"94\" \n                                             loading=\"lazy\" \/>\n                                    <\/li>\n                                                                                                                                <li>\n                                        <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Salesforce-icon-card.svg\" \n                                             alt=\"Salesforce logo\" \n                                             width=\"94\" \n                                             height=\"94\" \n                                             loading=\"lazy\" \/>\n                                    <\/li>\n               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src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Tiktok-icon-card.svg\" \n                                             alt=\"TikTok logo\" \n                                             width=\"94\" \n                                             height=\"94\" \n                                             loading=\"lazy\" \/>\n                                    <\/li>\n                                                                                    <\/ul>\n                        \n                                                    <ul aria-hidden=\"true\" class=\"animate-infinite-scroll\">\n                                                                                                            <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Paypal-icon-card.svg\" \n                                                 alt=\"Paypal logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/DHL-icon-card.svg\" \n                                                 alt=\"DHL logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n           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src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/ETSY-icon-card.svg\" \n                                                 alt=\"Etsy logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Amazon-icon-card.svg\" \n                                                 alt=\"Amazon logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n           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                                          alt=\"WIX logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Shopify-icon-card.svg\" \n                                                 alt=\"Shopify Logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                            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width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Salesforce-icon-card.svg\" \n                                                 alt=\"Salesforce logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/UPS-icon-card.svg\" \n                                                 alt=\"UPS logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Intuit-icon-card.svg\" \n                                                 alt=\"Intuit logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Woo-commerce-icon-card.svg\" \n                                                 alt=\"Woo Commerce logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                                                                <li>\n                                            <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/04\/Tiktok-icon-card.svg\" \n                                                 alt=\"TikTok logo\" \n                                                 width=\"94\" \n                                                 height=\"94\" \n                                                 loading=\"lazy\" \/>\n                                        <\/li>\n                                                                                                <\/ul>\n                                            <\/div>\n                <\/div>\n            <\/div> <!-- Close logo-marquee -->\n            <\/div> <!-- Close container -->\n        <\/div>\n    <\/div>\n<\/section>\n\n\n<style>\n.wp-block-shipstation-logo-marquee .container .logo-marquee .fade-edges .slider>ul>li img {<br \/>\n    min-height: 120px;<br \/>\n}<br \/>\n<\/style>\n\n\n<section class=\"wp-block-shipstation-cards-v2 block not-prose\" id=\"block-cards-69fa4c7a606dc\">\n            <div class=\"bg-grey-lightest background--full content-theme--light  \">\n        <div class=\"container\">\n                        <div class=\"content content-align-center items-center\">\n                                \n                                    <h2>Turn your shipping API into a competitive advantage<\/h2>\n                                \n                                    <div class=\"lead\"><p>Put your shipping API to work across every step of fulfillment. From instant label creation to customs compliance and manifests, ShipStation API reduces manual tasks, cuts carrier costs, and keeps every package moving on time. End-to-end intelligence means smarter routing, fewer errors, and better outcomes at scale.<\/p><\/div>\n                                \n                                \n                            <\/div>\n                        \n                                                <!-- Grid Mode -->\n                    <div class=\"cards icon-top columns-3 layout-grid\">\n                                                                                <div class=\"card card-icon card-solid card--centered card--text-centered bg-white\">\n                                \n        <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/smush-webp\/2026\/02\/icon-a0e3db372047.png.webp\" alt=\"\" class=\"icon\" loading=\"eager\" \/>\n    \n\n\n\n\n\n<div class=\"card-content h-full\">\n        <div class=\"card-text\">\n                    <!-- Standard heading\/eyebrow for all other card types -->\n            \n                                                <h3 class=\"h5\">Ship with confidence at global scale<\/h3>\n                                            \n                    <div class=\"body\"><p>Access a broad global carrier network and services so you always get the right service at the right price. Automate labels, forms, and tracking to create a faster, more customized shipping experience.<\/p><\/div>\n            <\/div>\n\n    <\/div>\n                            <\/div>\n                                                                                                            <div class=\"card card-icon card-solid card--centered card--text-centered bg-white\">\n                                \n        <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/smush-webp\/2026\/02\/icon-bbe346b15ef9.png.webp\" alt=\"\" class=\"icon\" loading=\"eager\" \/>\n    \n\n\n\n\n\n<div class=\"card-content h-full\">\n        <div class=\"card-text\">\n                    <!-- Standard heading\/eyebrow for all other card types -->\n            \n                                                <h3 class=\"h5\">Reduce delivery errors<\/h3>\n                                            \n                    <div class=\"body\"><p>Deliver multiple orders from the same customer\u2014 together. Ship compatible items in one box with one tracking experience\u2014reducing confusion and minimizing \u201cWhere is the rest of my order?\u201d contacts.<\/p><\/div>\n            <\/div>\n\n    <\/div>\n                            <\/div>\n                                                                                                            <div class=\"card card-icon card-solid card--centered card--text-centered bg-white\">\n                                \n        <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/smush-webp\/2026\/02\/icon-052fa1d5a4c6.png.webp\" alt=\"\" class=\"icon\" loading=\"eager\" \/>\n    \n\n\n\n\n\n<div class=\"card-content h-full\">\n        <div class=\"card-text\">\n                    <!-- Standard heading\/eyebrow for all other card types -->\n            \n                                                <h3 class=\"h5\">Stay compliant as rules change<\/h3>\n                                            \n                    <div class=\"body\"><p>Keep up with evolving carrier, customs, and regulatory requirements, from manifests to harmonized codes. Expand into new markets without risking delays or surprises.<\/p><\/div>\n            <\/div>\n\n    <\/div>\n                            <\/div>\n                                                                        <\/div>\n                            \n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n<section class=\"block block-zig-zag wp-block-shipstation-zig-zag block not-prose\">\n    <div class=\"bg-grey-lightest background--full content-theme--light content--lg \">\n        <div class=\"zig-zag-block\">\n            <div class=\"container\">\n                    <div class=\"content content-align-center items-center content-width-md\">\n                                        \n                                            <h2>Intelligent shipping API features built for modern fulfillment teams<\/h2>\n                                        \n                                            <div class=\"lead\">Bring carrier selection, label creation, manifests, and international compliance together in a single integration. Standardize workflows across systems and scale to new volumes, channels, and regions\u2014without rebuilding your tech stack.<\/div>\n                                        \n                                        \n                                    <\/div>\n                <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"1\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-1 content-align-left mobile-align-left\">\n                                \n                                    <h3>Multi-carrier label creation with 200+ carriers<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Create compliant labels across 200+ global carriers through one API integration. Connect to USPS\u00ae, UPS\u00ae, FedEx\u2122, and more while automatically applying the correct service codes, package types, and ship dates for every order. Print in bulk from your own systems, return tracking numbers and label URLs instantly, and support one-off, batched, or fully automated workflows without switching tools.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-2\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/multi-carrier-label-creation-with-200-carriers-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"2\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-2 content-align-left mobile-align-left\">\n                                \n                                    <h3>Accurate size and weight for better rates<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Avoid costly adjustments by sending precise dimensions and weight with every shipment. ShipStation API accepts standardized measurement objects so carriers calculate true dimensional weight\u2014reducing post-shipment corrections, preventing surprise charges, and keeping every package within service limits.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-1\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/accurate-size-and-weight-for-better-rates-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"3\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-1 content-align-left mobile-align-left\">\n                                \n                                    <h3>Smart ship dates, pickups, and manifests<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Keep handoffs smooth and predictable with built-in ship date controls and automated manifest generation. Align labels with actual carrier pickup dates, meet cutoff requirements, and generate physical or electronic manifests by carrier and warehouse. Drivers scan once instead of package by package, speeding up pickup while keeping operations compliant.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-2\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/smart-ship-dates-pickups-and-manifests-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"4\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-2 content-align-left mobile-align-left\">\n                                \n                                    <h3>Flexible packaging with carrier and custom package types<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Adapt to every shipment without reworking your process. Use predefined carrier package codes for flat-rate services or store reusable custom packaging types with fixed dimensions. Consistent packaging data improves rate accuracy and eliminates repetitive manual entry.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-1\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/flexible-packaging-with-carrier-and-custom-package-types-260220-1603.webp\" alt=\"shipment tracking api\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"5\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-1 content-align-left mobile-align-left\">\n                                \n                                    <h3>Parcel insurance across carriers and markets<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Protect high-value shipments with integrated parcel insurance options. ShipStation API supports ParcelGuard\u2122 for US-based accounts, XCover for UK-based accounts, and carrier-provided insurance where available. Choose providers at the shipment level, assign insured values per package\u2014even in multi-package shipments\u2014and manage claims through your selected partner or carrier.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-2\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/parcel-insurance-across-carriers-and-markets-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"6\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-2 content-align-left mobile-align-left\">\n                                \n                                    <h3>Multi-package shipping with master shipment tracking<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Ship complex, multi-box orders in a single request. Define individual package weights, dimensions, and insured values while generating all labels together. Retrieve a master tracking number that represents the full shipment across supported carriers like UPS\u00ae, FedEx\u2122, and DHL Express\u2014keeping customers and teams aligned from dispatch to delivery.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-1\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/multi-package-shipping-with-master-shipment-tracking-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"7\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-1 content-align-left mobile-align-left\">\n                                \n                                    <h3>Manifests and end-of-day compliance<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Stay aligned with carriers through automated manifest generation by carrier, warehouse, and ship date. Support both electronic and downloadable PDF workflows depending on requirements. Meet cutoff rules, maintain clean daily shipment records, and prevent compliance errors before they disrupt fulfillment.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-2\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/manifests-and-end-of-day-compliance-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"8\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-2 content-align-left mobile-align-left\">\n                                \n                                    <h3>International shipping, customs, and tax identifiers<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Expand globally with built-in customs and compliance support. Include product-level descriptions, quantities, declared values, harmonized tariff codes, and required tax identifiers directly in your label request. Specify customs contents, set non-delivery preferences, submit VAT, EORI, IOSS, or EIN identifiers, and download forms when required\u2014or rely on electronic submission where supported.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-1\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/international-shipping-customs-and-tax-identifiers-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"9\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-1 content-align-left mobile-align-left\">\n                                \n                                    <h3>Delivered Duty Paid options for US-to-Canada shipments<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Deliver a smoother cross-border experience with Delivered Duty Paid (DDP) for qualifying USPS\u00ae shipments from the US to Canada. Enable sender prepay to cover duties and taxes upfront, providing clear landed costs before delivery. A flat DDP fee is included in the rate response\u2014reducing friction and eliminating surprises at the door.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-2\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/delivered-duty-paid-options-for-us-to-canada-shipments-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n            <div class=\"columns flex-col-reverse items-center zig-zag-row\" data-row=\"10\">\n            \n            <!-- Text Column -->\n            <div class=\"column-content w-full md:col-span-6 md:order-2 content-align-left mobile-align-left\">\n                                \n                                    <h3>Compliance support for evolving regulations<\/h3>\n                                \n                                    <div class=\"lead max-w-[54rem]\">\n                        <p>Shipping regulations don\u2019t stand still\u2014and neither does ShipStation API. From updated HS code requirements to frameworks like Windsor for Great Britain to Northern Ireland shipments, the API continuously evolves to support new compliance fields and workflows. Add movement indicators, \u201cnot at risk\u201d flags, updated tax identifiers, and expanded customs data without rebuilding your integration.<\/p>                    <\/div>\n                                \n                                \n                            <\/div>\n\n            <!-- Media Column -->\n            <div class=\"column-media w-full md:col-span-6 md:order-1\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/02\/compliance-support-for-evolving-regulations-260220-1603.webp\" alt=\"\" class=\"rounded-xl\" \/>\n                            <\/div>\n\n        <\/div>\n                <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n<section class=\"block block-cards US \"><div class=\"bg-grey-lightest background--full content--full\">\n\n<div id=\"block-cards-block_9dfb7c12f97ae5215d3e8537410c589c\" class=\"block-cards resources-cards\">\n\t<div class=\"container pb-8\">\n\t\t<div class=\"acf-innerblocks-container\">\n<section class=\"block block-feature-text US \"><div class=\"content--sm\">\n<div id=\"feature-text-block-block_8d9e04d5db315f394ca1abda8639d372\" class=\"feature-text-block pb-6\">\n\t<div class=\"container\">\n\t\t<div class=\"content content-align-center\">\n\t\t\t\t\t<p class=\"eyebrow\">RELATED CONTENT<\/p>\n\t\t\t\t\t\t\t\t\t\t<h2 class=\"\">Helpful Shipping Resources<\/h2>\n\t\t\t\t\t\t\t\t<div class=\"text-lg max-w-[68rem]\"><p>Browse additional articles, guides, and insights related to shipping and fulfillment. These resources provide practical advice and best practices to support your day-to-day operations.<\/p>\n<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t<div class=\"acf-innerblocks-container\"><\/div>\n\t<\/div>\n<\/div>\n<\/div><\/section>\n<\/div>\n\t\t\n\t\t\n\t\t\t\t\t<div class=\"cards  columns-3 layout-grid\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card card-icon card-shadow bg-white items-center text-center \">\n\t\t\t\t\t\t\t\n<img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2025\/12\/IconExchanges-BrandShipstation-2-colorTrue.svg\"  sizes=\"auto, (max-width: 64px) 100vw, 64px\" loading=\"lazy\"   class=\"icon\" alt=\"Save on shipping icon\" width=\"64\" height=\"64\">\n<div class=\"card-content h-full\">\n    <div class=\"card-text\">\n                    <h5>The Cheapest Way to Ship Packages<\/h5>\n                             <p>Finding the cheapest way to ship a package doesn\u2019t mean sacrificing quality. Affordable shipping rates are available to anyone that knows where to look.<\/p>\n            <\/div>\n\n            <div class=\"card-cta\">\n            <a class=\"link-btn no-underline\" href=\"\/blog\/cheapest-way-to-ship\/\" target=\"\">Read the Blog<\/a>\n        <\/div>\n    <\/div>\n\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card card-icon card-shadow bg-white items-center text-center \">\n\t\t\t\t\t\t\t\n<img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2025\/12\/IconCurrency02-BrandShipstation-2-colorTrue.svg\"  sizes=\"auto, (max-width: 64px) 100vw, 64px\" loading=\"lazy\"   class=\"icon\" alt=\"Shipping rate calculator\" width=\"64\" height=\"64\">\n<div class=\"card-content h-full\">\n    <div class=\"card-text\">\n                    <h5>Calculate Shipping Costs and Start Saving Now<\/h5>\n                             <p>Whether you\u2019re shipping a single order or managing high-volume ecommerce fulfillment, ShipStation\u2019s shipping cost calculator helps you get fast, reliable quotes from top carriers so you can save time and money with every label.<\/p>\n            <\/div>\n\n            <div class=\"card-cta\">\n            <a class=\"link-btn no-underline\" href=\"\/shipping-rates-calculator\/\" target=\"\">Use the Shipping Rates Calculator<\/a>\n        <\/div>\n    <\/div>\n\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card card-icon card-shadow bg-white items-center text-center \">\n\t\t\t\t\t\t\t\n<img decoding=\"async\" src=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/01\/usps-icon.webp\" srcset=\"https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/01\/usps-icon.webp 200w, https:\/\/www.shipstation.com\/wp-content\/uploads\/2026\/01\/usps-icon-150x150.webp 150w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" loading=\"lazy\"   class=\"icon\" alt=\"USPS icon\" width=\"200\" height=\"200\">\n<div class=\"card-content h-full\">\n    <div class=\"card-text\">\n                    <h5>USPS Flat Rate Boxes, Envelopes, and Prices<\/h5>\n                             <p>USPS Flat Rate boxes and envelopes allow you to ship up to 70 lbs with USPS Priority Mail\u00ae at one low rate to anywhere in the US. The advantage of Flat Rate is that regardless of how much you fit into the packaging, it\u2019s allowable.<\/p>\n            <\/div>\n\n            <div class=\"card-cta\">\n            <a class=\"link-btn no-underline\" href=\"\/stories\/cocktail-courier-ensures-compliant-last-mile-delivery-with-shipstation-dropship-manager\/\" target=\"\">Read the Blog<\/a>\n        <\/div>\n    <\/div>\n\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n<\/div><\/section>\n\n\n<style>\n.resources-cards img {\n    border-radius: 8px;\n}\n<\/style>\n\n\n<section class=\"block block-feature-text US \"><div class=\"bg-cobalt-lighter background--full content--sm\">\n<div id=\"feature-text-block-block_fbeaeb009c217f199d89d27efcb787e5\" class=\"feature-text-block pb-6\">\n\t<div class=\"container\">\n\t\t<div class=\"content content-align-center\">\n\t\t\t\t\t\t\t\t\t\t<h2 class=\"\">Ready to get started?<\/h2>\n\t\t\t\t\t\t\t\t<div class=\"text-lg max-w-[68rem]\"><p>ShipStation API removes the complexities of shipping. Scale your business with our industry-leading API, comprehensive documentation, and vast carrier network.<\/p>\n<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"btn-group\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.shipengine.com\/signup\/\" target=\"_blank\" class=\"btn\">Start Shipping Now<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.shipengine.com\/contact\/\" target=\"_blank\" class=\"btn outline\">Talk to an Expert<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t<div class=\"acf-innerblocks-container\"><\/div>\n\t<\/div>\n<\/div>\n<\/div><\/section>\n\n\n<section class=\"wp-block-shipstation-faqs block not-prose\">\n    <div class=\"background--full content--md\">\n        <div class=\"accordion-block\">\n            <div class=\"container\">\n                    <div class=\"content content-align-center items-center content-width-md\">\n                                        \n                                            <h3>Shipping API FAQs<\/h3>\n                                        \n                                        \n                                        \n                                    <\/div>\n                        <div class=\"accordions\">\n                                            <div class=\"accordion\">\n                            <div class=\"question\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\">\n                                <h5>What is a shipping API and how does ShipStation API fit into my stack?<\/h5>\n                                <div class=\"icon\">\n                                    <svg class=\"span-2\" width=\"16\" height=\"17\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 24 24\" stroke-width=\"1.5\" stroke=\"currentColor\">\n                                        <path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M19.5 8.25l-7.5 7.5-7.5-7.5\" \/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"body-content\">\n                                <div class=\"prose\"><p>A <a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/\">shipping API<\/a> connects your existing systems to carriers so you can create labels, get rates, and <a href=\"https:\/\/www.shipstation.com\/fulfillment\/shipping\/tracking\/\">track shipments<\/a> programmatically. ShipStation <a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/shipping\/\">API<\/a> plugs into your <a href=\"https:\/\/www.shipstation.com\/fulfillment\/order-management\/\">OMS<\/a>, WMS, cart, or custom tools so shipping becomes a seamless part of your workflow instead of a separate manual step.<\/p>\n<\/div>\n                            <\/div>\n                        <\/div>\n                                            <div class=\"accordion\">\n                            <div class=\"question\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\">\n                                <h5>Can I use one shipping API to access multiple carriers?<\/h5>\n                                <div class=\"icon\">\n                                    <svg class=\"span-2\" width=\"16\" height=\"17\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 24 24\" stroke-width=\"1.5\" stroke=\"currentColor\">\n                                        <path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M19.5 8.25l-7.5 7.5-7.5-7.5\" \/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"body-content\">\n                                <div class=\"prose\"><p>Yes. <a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/\">ShipStation API<\/a> gives you access to 200+ carriers through a single integration. Instead of building and maintaining separate carrier APIs, you connect once to ShipStation <a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/shipping\/\">API<\/a>, then configure your carrier accounts, services, and rules in one place.<\/p>\n<\/div>\n                            <\/div>\n                        <\/div>\n                                            <div class=\"accordion\">\n                            <div class=\"question\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\">\n                                <h5>How does ShipStation API help with international compliance and HS codes?<\/h5>\n                                <div class=\"icon\">\n                                    <svg class=\"span-2\" width=\"16\" height=\"17\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 24 24\" stroke-width=\"1.5\" stroke=\"currentColor\">\n                                        <path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M19.5 8.25l-7.5 7.5-7.5-7.5\" \/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"body-content\">\n                                <div class=\"prose\"><p><a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/\">ShipStation API<\/a> lets you include customs, product, and tax identifier objects directly in your shipment request. You can send descriptions, values, weights, harmonized tariff codes, and tax IDs so carriers and customs authorities receive the data they need to keep shipments moving.<\/p>\n<\/div>\n                            <\/div>\n                        <\/div>\n                                            <div class=\"accordion\">\n                            <div class=\"question\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\">\n                                <h5>What happens if carriers change requirements or regulations update?<\/h5>\n                                <div class=\"icon\">\n                                    <svg class=\"span-2\" width=\"16\" height=\"17\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewBox=\"0 0 24 24\" stroke-width=\"1.5\" stroke=\"currentColor\">\n                                        <path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M19.5 8.25l-7.5 7.5-7.5-7.5\" \/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"body-content\">\n                                <div class=\"prose\"><p>Our team keeps <a href=\"https:\/\/www.shipstation.com\/fulfillment\/api\/\">ShipStation API<\/a> aligned with carrier and regulatory changes, such as updated HS code expectations or new frameworks like the Windsor requirements. You focus on sending the right data from your systems, and we update the underlying carrier logic and documentation as rules evolve.<\/p>\n<\/div>\n                            <\/div>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":100,"featured_media":74398,"parent":74164,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_yoast_wpseo_metadesc":"Use ShipStation\u2019s API for custom shipping, live rates, and global delivery. Create labels instantly and simplify your entire shipping workflow.","_ss_page_background":"","_av_enabled":"","_av_paused":"","_av_proposed_allocation":"","_av_current_cycle":0,"_av_primary_variant_id":0,"footnotes":""},"class_list":["post-74413","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":{"shipstation_product_type":["shipstation_api"],"shipstation_features":"","shipstation_company_size":"","shipstation_industry":"","shipstation_funnel_stage":"decision"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.1 (Yoast SEO v25.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Shipping API for Multi-Carrier Fulfillment | ShipStation<\/title>\n<meta name=\"description\" content=\"Use ShipStation\u2019s API for custom shipping, live rates, and global delivery. 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