Build Smarter Shipping
Build Smarter Shipping
Workflows with OTO’s API
Workflows with OTO’s API
Use OTO’s developer-friendly API to integrate your internal systems, automate custom shipping logic, and gain full control over order management - all while leveraging OTO’s robust shipping infrastructure.
Join Industry Leaders Who Trust OTO for Smarter Operations
Join Industry Leaders Who Trust OTO for Smarter Operations
Join Industry Leaders Who Trust OTO for Smarter Operations
A Shipping API That Simplifies and Optimizes Your Logistics
Connect once, ship everywhere. OTO’s robust API lets you streamline operations, reduce development time, and manage high-volume logistics with ease.
A Shipping API That Simplifies and Optimizes Your Logistics
Connect once, ship everywhere. OTO’s robust API lets you streamline operations, reduce development time, and manage high-volume logistics with ease.
Connect to All Carriers Instantly
Skip the hassle of multiple carrier APIs. Integrate with 400+ carriers through a single, powerful API.
Connect to All Carriers Instantly
Skip the hassle of multiple carrier APIs. Integrate with 400+ carriers through a single, powerful API.
Connect to All Carriers Instantly
Skip the hassle of multiple carrier APIs. Integrate with 400+ carriers through a single, powerful API.
Cut Costs, Save Development Time
Save money and resources by managing all your shipping operations in one place.
Cut Costs, Save Development Time
Save money and resources by managing all your shipping operations in one place.
Cut Costs, Save Development Time
Save money and resources by managing all your shipping operations in one place.
Handle High Volumes Easily
Optimize operations and ensure fast and reliable performance at scale.
Handle High Volumes Easily
Optimize operations and ensure fast and reliable performance at scale.
Handle High Volumes Easily
Optimize operations and ensure fast and reliable performance at scale.
Better Financial Oversight
Get clear insights into transactions and shipping costs for better budgeting and forecasting.
Better Financial Oversight
Get clear insights into transactions and shipping costs for better budgeting and forecasting.
Better Financial Oversight
Get clear insights into transactions and shipping costs for better budgeting and forecasting.
A Shipping API That Simplifies and Optimizes Your Logistics
Connect once, ship everywhere. OTO’s robust API lets you streamline operations, reduce development time, and manage high-volume logistics with ease.
A Shipping API That Simplifies and Optimizes Your Logistics
Connect once, ship everywhere. OTO’s robust API lets you streamline operations, reduce development time, and manage high-volume logistics with ease.
Unlock the Power of Unique API Features for Seamless Integration
Experience next-level automation with our API’s unique features—designed for flexibility, speed, and seamless integration. Enhance your workflow with cutting-edge capabilities that set your business apart.
Track Shipments Anywhere
Get real-time shipment status and history via API and webhook—no authorization needed. Track seller shipments across multiple platforms effortlessly.
Get Shipping Rates Instantly
Retrieve OTO’s competitive shipping rates via API, compare options, and choose the best price for every shipment.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
ZPL-Optimized Labels
Create high-quality, printer-ready ZPL shipping labels for smoother logistics operations.
Detailed Shipping Reports
Access comprehensive shipping data, from cost estimates to invoice reconciliation, all in one place.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
Unlock the Power of Unique API Features for Seamless Integration
Experience next-level automation with our API’s unique features—designed for flexibility, speed, and seamless integration. Enhance your workflow with cutting-edge capabilities that set your business apart.
Track Shipments Anywhere
Get real-time shipment status and history via API and webhook—no authorization needed. Track seller shipments across multiple platforms effortlessly.
Get Shipping Rates Instantly
Retrieve OTO’s competitive shipping rates via API, compare options, and choose the best price for every shipment.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
ZPL-Optimized Labels
Create high-quality, printer-ready ZPL shipping labels for smoother logistics operations.
Detailed Shipping Reports
Access comprehensive shipping data, from cost estimates to invoice reconciliation, all in one place.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
Unlock the Power of Unique API Features for Seamless Integration
Experience next-level automation with our API’s unique features—designed for flexibility, speed, and seamless integration. Enhance your workflow with cutting-edge capabilities that set your business apart.
Track Shipments Anywhere
Get real-time shipment status and history via API and webhook—no authorization needed. Track seller shipments across multiple platforms effortlessly.
Get Shipping Rates Instantly
Retrieve OTO’s competitive shipping rates via API, compare options, and choose the best price for every shipment.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
ZPL-Optimized Labels
Create high-quality, printer-ready ZPL shipping labels for smoother logistics operations.
Detailed Shipping Reports
Access comprehensive shipping data, from cost estimates to invoice reconciliation, all in one place.
Sync Sales Channels Effortlessly
Integrate your sales channel with OTO’s API. Connect one platform to manage orders, shipments, and logistics in real time.
Print Shipping Labels in Bulk
Generate and print multiple labels simultaneously to save time and speed up your shipping process.
A Complete API Suite for Shipping Management
Manage shipments, track orders and automate logistics with one powerful API. Simplify operations and keep everything running smoothly.Enhance your workflow with cutting-edge capabilities that set your business apart.
A Complete API Suite for Shipping Management
Manage shipments, track orders and automate logistics with one powerful API. Simplify operations and keep everything running smoothly.Enhance your workflow with cutting-edge capabilities that set your business apart.
Marketplace API
Register and manage vendors and sellers effortlessly.
Marketplace API
Register and manage vendors and sellers effortlessly.
Marketplace API
Register and manage vendors and sellers effortlessly.
Order Management API
Process, update, and sync orders seamlessly.
Order Management API
Process, update, and sync orders seamlessly.
Order Management API
Process, update, and sync orders seamlessly.
Shipping API
Generate labels, manage shipments, and simplify deliveries.
Shipping API
Generate labels, manage shipments, and simplify deliveries.
Shipping API
Generate labels, manage shipments, and simplify deliveries.
Shipping Rates API
Get accurate shipping rates from OTO or your own carrier contracts.
Shipping Rates API
Get accurate shipping rates from OTO or your own carrier contracts.
Returns API
Create returns, generate labels, and send return notifications.
Returns API
Create returns, generate labels, and send return notifications.
Shipping Rates API
Get accurate shipping rates from OTO or your own carrier contracts.
Shipping Rates API
Get accurate shipping rates from OTO or your own carrier contracts.
Shipping Rates API
Get accurate shipping rates from OTO or your own carrier contracts.
Shipping Transactions API
Access cost estimates, invoice reconciliation, and adjustments.
Shipping Transactions API
Access cost estimates, invoice reconciliation, and adjustments.
Shipping Transactions API
Access cost estimates, invoice reconciliation, and adjustments.
Shipping Transactions API
Access cost estimates, invoice reconciliation, and adjustments.
Returns API
Create returns, generate labels, and send return notifications.
Returns API
Create returns, generate labels, and send return notifications.
Tracking API
Get real-time tracking updates and delivery statuses via API and webhooks.
Tracking API
Get real-time tracking updates and delivery statuses via API and webhooks.
Tracking API
Get real-time tracking updates and delivery statuses via API and webhooks.
Tracking API
Get real-time tracking updates and delivery statuses via API and webhooks.
Carrier Integrations API
Connect with 400+ carriers through one simple integration.
Carrier Integrations API
Connect with 400+ carriers through one simple integration.
Address Validation API
Verify addresses before shipping to avoid failed deliveries.
Address Validation API
Verify addresses before shipping to avoid failed deliveries.
Carrier Integrations API
Connect with 350+ carriers through one simple integration.
Carrier Integrations API
Connect with 350+ carriers through one simple integration.
Address Validation API
Verify addresses before shipping to avoid failed deliveries.
Address Validation API
Verify addresses before shipping to avoid failed deliveries.
Address Validation API
Verify addresses before shipping to avoid failed deliveries.
Sales Channel API
Sync orders from various e-commerce platforms and marketplaces.
Sales Channel API
Sync orders from various e-commerce platforms and marketplaces.
Sales Channel API
Sync orders from various e-commerce platforms and marketplaces.
Pickup Locations API
Create and update pickup points with ease.
Pickup Locations API
Create and update pickup points with ease.
Pickup Locations API
Create and update pickup points with ease.
Pickup Locations API
Create and update pickup points with ease.
Products API
Sync, create, and update product details and inventory for smoother shipping.
Products API
Sync, create, and update product details and inventory for smoother shipping.
How to Get Started
01 Sign up
Register for a free API demo account through your OTO account.
02 Explore & Test
Review our API reference guide and sample requests and use our sandbox environment to validate your setup.
03 Deploy
Implement the API into your production environment and refine workflows as needed.
How to Get Started
01 Sign up
Register for a free API demo account through your OTO account.
02 Explore & Test
Review our API reference guide and sample requests and use our sandbox environment to validate your setup.
03 Deploy
Implement the API into your production environment and refine workflows as needed.
How to Get Started
01 Sign up
Register for a free API demo account through your OTO account.
02 Explore & Test
Review our API reference guide and sample requests and use our sandbox environment to validate your setup.
03 Deploy
Implement the API into your production environment and refine workflows as needed.
How to Get Started
01 Sign up
Register for a free API demo account through your OTO account.
02 Explore & Test
Review our API reference guide and sample requests and use our sandbox environment to validate your setup.
03 Deploy
Implement the API into your production environment and refine workflows as needed.
Your Shipping, Fully Automated. Start Building with OTO’s API Today.
Your Shipping, Fully Automated. Start Building with OTO’s API Today.
Your Shipping, Fully Automated. Start Building with OTO’s API Today.
Frequently Asked Questions
Everything You Need to Know Before Getting Started
Frequently Asked Questions
Everything You Need to Know Before Getting Started
Frequently Asked Questions
Everything You Need to Know Before Getting Started
How long does it take to integrate OTO’s API with my systems?
Thanks to OTO’s developer-friendly documentation and ready-to-use sandbox environment, custom technical integrations using the API can be completed quickly and easily.
Can I use OTO’s API with my e-commerce platform or custom store?
Can I create shipping labels in bulk through OTO?
What types of reports and analytics does the OTO system provide?
How does real-time shipment tracking work?
How can I manage returns using OTO’s API?
Can OTO’s API handle a large volume of shipments?
How long does it take to integrate OTO’s API with my systems?
Thanks to OTO’s developer-friendly documentation and ready-to-use sandbox environment, custom technical integrations using the API can be completed quickly and easily.
Can I use OTO’s API with my e-commerce platform or custom store?
Can I create shipping labels in bulk through OTO?
What types of reports and analytics does the OTO system provide?
How does real-time shipment tracking work?
How can I manage returns using OTO’s API?
Can OTO’s API handle a large volume of shipments?
How long does it take to integrate OTO’s API with my systems?
Thanks to OTO’s developer-friendly documentation and ready-to-use sandbox environment, custom technical integrations using the API can be completed quickly and easily.
Can I use OTO’s API with my e-commerce platform or custom store?
Can I create shipping labels in bulk through OTO?
What types of reports and analytics does the OTO system provide?
How does real-time shipment tracking work?
How can I manage returns using OTO’s API?
Can OTO’s API handle a large volume of shipments?
A Complete API Suite for Logistics Management
Manage shipments, track orders and automate logistics with one powerful API. Simplify operations and keep everything running smoothly.Enhance your workflow with cutting-edge capabilities that set your business apart.
A Complete API Suite for Logistics Management
Manage shipments, track orders and automate logistics with one powerful API. Simplify operations and keep everything running smoothly.Enhance your workflow with cutting-edge capabilities that set your business apart.