Web Tools Documentation & Updates
Migrate NOW to USPS APIs
The USPS Web Tools API platform was retired on 25 de enero de 2026 and service disruptions are underway. Platform support is sunsetting and availability may be degraded or interrupted at any time. To avoid service disruptions, migrate now to the new USPS APIs.
The functional equivalents of the Web Tools APIs are now available in the USPS API Catalog: USPS APIs Developer Portal.
The full Web Tools API platform is retired as of 25 de enero de 2026. To avoid any service disruptions, migrate to the new USPS APIs. Contact USPS API Support for help and provide any feedback via the feedback form.
Announcements & Upcoming Release Notes
- Web Tools 2026 Release Notes - PDF
- How to Transition to USPS APIs - PDF
- FAQs - Web Tools to USPS APIs - PDF
- USPS APIs Migration Onboarding Guide PDF
- USPS APIs - Web Tools Mappings
- USPS Address API - Web Tools Mapping - XLSX
- USPS Carrier Pickup API - Web Tools Mapping - XLSX
- USPS Domestic Label API - Web Tools Mapping - XLSX
- USPS International Label API - Web Tools Mapping - XLSX
- USPS SCAN Form API - Web Tools Mapping - XLSX
- USPS Tracking API - Web Tools Mapping - XLSX
- USPS Price API - Web Tools Mapping - XLSX
- USPS International Price API - Web Tools Mapping - XLSX
- USPS Shipping Options API - Web Tools Mapping - XLSX
- USPS Service Standards API - Web Tools Mapping - XLSX
- USPS Location API - Web Tools Mapping - XLSX
- Aviso de Web Tools: Account Duration Update - PDF
- Aviso de Web Tools: TLS 1.2 Protocol Compliance - PDF
- Guía de Transición de la API ExpressMail a ExpressMailCommitment - HTM | PDF
- Label API Restrictions Notice - PDF
- Label API Restrictions FAQs - PDF
- Customer Options – Postage Labels - PDF
- Nuevo: Simplified Onboarding Process - PDF
- Web Tools FAQs - PDF
API User Guides
Step-by-Step Instructions for All USPS Web Tools - PDF | HTM
- Address Validation/Standardization
- City & State Lookup
- Búsqueda de ZIP Code™
Tracking & Delivery Information APIs - PDF | HTM
- Rastreo
- Tracking by Email
- Comprobante de entrega
- Comprobante de Entrega de Rastreo
- Acuse de recibo electrónico
Price Calculator APIs - PDF | HTM
- Calculadora de precios domésticos
- Calculadora de precios internacionales
Shipping Label APIs
- eVS Domestic Labels - PDF | HTM
- eVS International Labels - PDF | HTM
- Scan Form - PDF | HTM
- USPS Returns Labels - PDF | HTM
Package Pickup APIs - PDF | HTM
- Check pickup availability
- Programar una recogida
- Cancel a pickup request
- Update a pickup request
API de Compromisos y Estándares de Servicio
- Domestic Mail Service Standards - PDF | HTM
- Service Delivery Calculator - PDF | HTM
- Sunday Holiday Availability - PDF | HTM
Facility APIs
Desarrolladores: Preguntas Frecuentes sobre Web Tools
Abrir o Cerrar el contenido a continuación ¿Son gratuitas las API de USPS?
Los clientes que se han registrado para una cuenta de USPS Web Tools® y han aceptado los términos y condiciones de uso puede acceder a las API de USPS en forma gratuita.
Abrir o Cerrar el contenido a continuación ¿Cómo obtengo acceso a las API de USPS y recibo mi identificación de usuario?
Once registered, you'll receive an email containing your Web Tools credentials and instructions on how to begin using APIs. Please reference the instructions prior to requesting access and beginning integration.
Abrir o Cerrar el contenido a continuación Las etiquetas que puedo imprimir contienen la marca de agua “SAMPLE-DO NOT MAIL” (MUESTRA-NO IMPRIMIR). ¿Cómo imprimo las etiquetas reales?
La API que contiene "Certify" es nuestra API de prueba, e imprimirá etiquetas con la marca de agua de muestra. Para generar etiquetas reales, debe eliminar "Certify" de todas sus solicitudes XML de Web Tools.
Abrir o Cerrar el contenido a continuación ¿USPS dispone de una API de EDDM?
Actualmente solo ofrecemos los servicios de EDDM® (Every Door Direct Mail®) a través de nuestra solicitud en línea.
Abrir o Cerrar el contenido a continuación ¿Ha habido cambios recientes o habrá cambios futuros en las API de Web Tools?
Para brindar la mejor oferta de API, actualizamos periódicamente nuestros sistemas, lo que puede requerir que los clientes existentes actualicen su software. Para determinar si esos cambios/actualizaciones se aplican a usted, consulte nuestras Notas de Lanzamiento más recientes. Este documento contiene todos los nuevos cambios y pasos para resolver en caso de que se vea afectado. Recuerde contactar primero a su proveedor de software por cualquier pregunta relacionada con la integración.
Notas de la Versión Anterior
- Web Tools 2026 Release Notes (v1.3 updated 2/4/2026) - PDF
- Web Tools 2026 Release Notes (v1.1 updated 12/31/2025) - PDF
- Web Tools 2025 Release Notes (v1.21 updated 11/7/2025) - PDF
- Web Tools 2025 Release Notes (v1.19 updated 10/17/2025) - PDF
- Web Tools 2025 Release Notes (v1.17 updated 9/8/2025) - PDF
- Web Tools 2025 Release Notes (v1.15 updated 8/21/2025) - PDF
- Web Tools 2025 Release Notes (v1.13 updated 7/17/2025) - PDF
- Web Tools 2025 Release Notes (v1.11 updated 6/27/2025) - PDF
- Web Tools 2025 Release Notes (v1.9 updated 5/15/2025) - PDF
- Web Tools 2025 Release Notes (v1.7 updated 4/16/2025) - PDF
- Web Tools 2025 Release Notes (v1.5 updated 3/17/2025) - PDF
- Web Tools 2025 Release Notes (v1.3 updated 2/11/2025) - PDF
- Web Tools 2025 Release Notes (v1.1 updated 1/10/2025) - PDF
- Web Tools 2024 Release Notes (v1.23 updated 11/08/2024) - PDF
- Web Tools 2024 Release Notes (v1.21 updated 10/16/2024) - PDF
- Web Tools 2024 Release Notes (v1.19 updated 9/20/2024) - PDF
- Web Tools 2024 Release Notes (v1.17 updated 8/12/2024) - PDF
- Web Tools 2024 Release Notes (v1.15 updated 7/9/2024) - PDF
- Web Tools 2024 Release Notes (v1.13 updated 6/18/2024) - PDF
- Web Tools 2024 Release Notes (v1.11 updated 5/20/2024) - PDF
- Web Tools 2024 Release Notes (v1.9 updated 5/15/2024) - PDF
- Web Tools 2024 Release Notes (v1.7 updated 4/11/2024) - PDF
- Web Tools 2024 Release Notes (v1.5 updated 3/19/2024) - PDF
- Web Tools 2024 Release Notes (v1.3 updated 2/8/2024) - PDF
- Web Tools 2024 Release Notes (v1.1 updated 12/8/2023) - PDF
- Web Tools 2023 Release Notes (v1.27 updated 11/2/2023) - PDF
- Web Tools 2023 Release Notes (v1.25 updated 10/16/2023) - PDF
- Web Tools 2023 Release Notes (v1.23 updated 9/12/2023) - PDF
- Web Tools 2023 Release Notes (v1.21 updated 8/17/2023) - PDF
- Web Tools 2023 Release Notes (v1.17 updated 6/28/2023) - PDF
- Web Tools 2023 Release Notes (v1.11 updated 5/22/2023) - PDF
- Web Tools 2023 Release Notes (v1.9 updated 4/21/2023) - PDF
- Web Tools 2023 Release Notes (v1.7 updated 3/21/2023) - PDF
- Web Tools 2023 Release Notes (v1.5 updated 2/16/2023) - PDF
- Web Tools 2023 Release Notes (v1.3 updated 1/19/2023) - PDF
- Web Tools 2023 Release Notes (v1.1 updated 1/09/2023) - PDF
- Web Tools 2022 Release Notes (v1.33 updated 11/03/2022) - PDF
- Web Tools 2022 Release Notes (v1.31 updated 10/27/2022) - PDF
- Web Tools 2022 Release Notes (v1.29 updated 10/18/2022) - PDF
- Web Tools 2022 Release Notes (v1.27 updated 9/28/2022) - PDF
- Web Tools 2022 Release Notes (v1.25 updated 9/19/2022) - PDF
- Web Tools 2022 Release Notes (v1.23 updated 9/7/2022) - PDF
- Web Tools 2022 Release Notes (v1.21 updated 8/9/2022) - PDF
- Web Tools 2022 Release Notes (v1.19 updated 8/2/2022) - PDF
- Web Tools 2022 Release Notes (v1.17 updated 7/11/2022) - PDF
- Web Tools 2022 Release Notes (v1.15 updated 6/24/2022) - PDF
- Web Tools 2022 Release Notes (v1.13 updated 6/17/2022) - PDF
- Web Tools 2022 Release Notes (v1.11 updated 6/8/2022) - PDF
- Web Tools 2022 Release Notes (v1.9 updated 5/4/2022) - PDF
- Web Tools 2022 Release Notes (v1.7 updated 4/13/2022) - PDF
- Web Tools 2022 Release Notes (v1.5 updated 3/10/2022) - PDF
- Web Tools 2022 Release Notes (v1.3 updated 2/2/2022) - PDF
- Web Tools 2022 Release Notes (v1.1 updated 12/22/2021) - PDF
- Web Tools 2021 Release Notes (v1.25 updated 11/1/2021) - PDF
- Web Tools 2021 Release Notes (v1.23 updated 10/19/2021) - PDF
- Web Tools 2021 Release Notes (v1.21 updated 9/20/2021) - PDF
- Web Tools 2021 Release Notes (v1.19 updated 9/15/2021) - PDF
- Web Tools 2021 Release Notes (v1.17 updated 8/10/2021) - PDF
- Web Tools 2021 Release Notes (v1.15 updated 7/30/2021) - PDF
- Web Tools 2021 Release Notes (v1.13 updated 6/24/2021) - PDF
- Web Tools 2021 Release Notes (v1.11 updated 6/14/2021) - PDF
- Web Tools 2021 Release Notes (v1.9 updated 5/12/2021) - PDF
- Web Tools 2021 Release Notes (v1.7 updated 4/12/2021) - PDF
- Web Tools 2021 Release Notes (v1.5 updated 3/8/2021) - PDF
- Web Tools 2021 Release Notes (v1.3 updated 2/3/2021) - PDF
- Web Tools 2021 Release Notes (v1.1 updated 1/11/2021) - PDF
- Web Tools 2020 Release Notes (v1.17 updated 10/13/2020) - PDF
- Web Tools 2020 Release Notes (v1.13 updated 9/24/2020) - PDF
- Web Tools 2020 Release Notes (v1.11 updated 9/14/2020) - PDF
- Web Tools 2020 Release Notes (v1.9 updated 8/10/2020) - PDF
- Web Tools 2020 Release Notes (v1.7 updated 6/15/2020) - PDF
- Web Tools 2020 Release Notes (v1.5 updated 5/11/2020) - PDF
- Web Tools 2020 Release Notes (v1.3 updated 2/13/2020) - PDF
- Web Tools 2020 Release Notes (v1.1 updated 1/9/2020) - PDF
- Web Tools 2019 Release Notes (v1.11 updated 10/21/2019 - PDF
- Web Tools 2019 Release Notes (v1.9 updated 9/24/2019) - PDF
- Web Tools 2019 Release Notes (v1.7 updated 7/27/2019) - PDF
- Web Tools 2019 Release Notes (v1.5 updated 4/24/2019) - PDF
- Web Tools 2019 Release Notes (v1.3 updated 2/21/2019) - PDF
- Web Tools 2019 Release Notes (v1.1 updated 12/31/2018) - PDF
- Web Tools 2018 Release Notes (v1.19 updated 9/19/2018) - PDF
- Web Tools 2018 Release Notes (v1.17 updated 8/7/2018) - PDF
- Web Tools 2018 Release Notes (v1.15 updated 7/23/2018) - PDF
- Web Tools 2018 Release Notes (v1.13 updated 6/22/2018) - PDF
- Web Tools 2018 Release Notes (v1.9 updated 5/9/2018) - PDF
- Web Tools 2018 Release Notes (v1.7 updated 3/22/2018) - PDF
- February and March 2018 Release Notes (v1.5 updated 2/12/2018) - PDF
- January and February 2018 Release Notes (v1.3 updated 1/4/2018) - PDF
- January 2018 Release Notes (v1.1 updated 12/7/2017) - PDF
- USPS Web Tools Secure/HTTPS API Outage - 17 de septiembre de 2017 - PDF
- June-November 2017 Release Notes (updated 9/12/2017) - PDF
- March 2017 Release Notes (updated 3/13/2017) - PDF
- January-March 2017 Release Notes (updated 2/14/2017) - PDF
- February 2017 API Retirement Transition Guide (v. 1.3, updated 12/8/2016) - PDF