API Versioning Standards and Deprecation Timelines

Introduction

API versioning is vital for maintaining seamless communication and data exchange between applications during software development. This is a strategic enhancement designed to give you greater control, improved stability, and smoother integration processes.

Need for API Versioning

APIs serve as the backbone of modern software ecosystems, enabling diverse applications to interact with each other and share data seamlessly. However, as platforms evolve, managing changes without disrupting existing systems becomes a challenge.

Deprecation Strategies for Earlier API Endpoints

As part of these strategies, we have come up with End of Support (EOS) and End of Life (EOL) policies for the earlier released APIs, and you will observe this for all earlier and upcoming new endpoints.

EOS and EOL timelines:

For API endpoints supporting versioning standards, customers get an overall 12 months to shift to the latest versions.

End of Support (EOS): Six months after the latest deployment for your respective POD. During this EOS period, new enhancements will not be supported. Any identified bugs will be addressed only.  In the API response output, you will notice the EOS timelines for the respective endpoint.

End of Life (EOL): An Additional six months’ lead time starting from the EOS timelines is available to switch to the latest versions. During this EOL period, new enhancements will not be supported, and bugs will be addressed in the latest versions. After this lead time, the API endpoint will be decommissioned. In the API response output, you will notice the past due of EOS and the EOL timelines for the respective endpoint.

EOS-EOL Timelines for VM API EndpointsEOS-EOL Timelines for VM API Endpoints

Module Category API Path New API Path (Recommended) EOS (End Of Service) EOL (End Of Life)
Search list Dynamic Search list API /api/2.0/fo/qid/search_list/dynamic/index.php /api/3.0/fo/qid/search_list/dynamic/index.php August 2026 February 2027
Knowledge Base
 
Knowledge Base Vulnerability API

/api/2.0/fo/knowledge_base/vuln/index.php

/api/4.0/fo/knowledge_base/vuln/index.php December 2025 December 2026
/api/3.0/fo/knowledge_base/vuln/index.php /api/4.0/fo/knowledge_base/vuln/index.php August 2026 February 2027
Knowledge Base QVS API /api/2.0/fo/knowledge_base/qvs/index.php /api/3.0/fo/knowledge_base/qvs/index.php December 2025 December 2026
Scan Cloud Internal Scan API /api/2.0/fo/scan/cloud/internal/job/index.php /api/3.0/fo/scan/cloud/internal/job/index.php November 2026 May 2027
Schedule Scan API /api/2.0/fo/schedule/scan/index.php /api/5.0/fo/schedule/scan/index.php December 2025 December 2026
/api/3.0/fo/schedule/scan/index.php /api/5.0/fo/schedule/scan/index.php December 2025 December 2026
/api/4.0/fo/schedule/scan/index.php /api/5.0/fo/schedule/scan/index.php December 2025 December 2026
Scan API /api/2.0/fo/scan/index.php /api/3.0/fo/scan/index.php December 2025 December 2026
Cloud Perimeter Scan API /api/2.0/fo/scan/cloud/perimeter/job/index.php /api/4.0/fo/scan/cloud/perimeter/job/index.php December 2025 December 2026
/api/3.0/fo/scan/cloud/perimeter/job/index.php /api/4.0/fo/scan/cloud/perimeter/job/index.php December 2025 December 2026
Option Profile  Option Profile API

/api/2.0/fo/subscription/option_profile/index.php

/api/6.0/fo/subscription/option_profile/index.php December 2025 December 2026
/api/3.0/fo/subscription/option_profile/index.php /api/6.0/fo/subscription/option_profile/index.php December 2025 December 2026
/api/4.0/fo/subscription/option_profile/index.php /api/6.0/fo/subscription/option_profile/index.php December 2025 December 2026
/api/5.0/fo/subscription/option_profile/index.php /api/6.0/fo/subscription/option_profile/index.php July 2026 January 2027
VM Option Profile API  /api/2.0/fo/subscription/option_profile/vm/index.php  /api/4.0/fo/subscription/option_profile/vm/index.php December 2025 December 2026
 /api/3.0/fo/subscription/option_profile/vm/index.php  /api/4.0/fo/subscription/option_profile/vm/index.php December 2025 December 2026
Asset  Asset Host API /api/2.0/fo/asset/host/index.php /api/5.0/fo/asset/host/index.php December 2025 December 2026
/api/3.0/fo/asset/host/index.php /api/5.0/fo/asset/host/index.php December 2025 December 2026
/api/4.0/fo/asset/host/index.php /api/5.0/fo/asset/host/index.php December 2025 December 2026
VM Detection API /api/2.0/fo/asset/host/vm/detection/index.php /api/5.0/fo/asset/host/vm/detection/index.php December 2025 June 2027
/api/3.0/fo/asset/host/vm/detection/index.php /api/5.0/fo/asset/host/vm/detection/index.php December 2025 June 2027
/api/4.0/fo/asset/host/vm/detection/index.php /api/5.0/fo/asset/host/vm/detection/index.php December 2025 June 2027
Report Report Template Scan API /api/2.0/fo/report/template/scan/index.php /api/7.0/fo/report/template/scan/index.php December 2025 December 2026
/api/3.0/fo/report/template/scan/index.php /api/7.0/fo/report/template/scan/index.php December 2025 December 2026
/api/4.0/fo/report/template/scan/index.php /api/7.0/fo/report/template/scan/index.php
For more information, refer to Scan Template API
December 2025 June 2027
Report API /api/2.0/fo/report/index.php /api/3.0/fo/report/index.php December 2025 December 2026

EOS-EOL Timelines for PA API EndpointsEOS-EOL Timelines for PA API Endpoints

Module Category API Path New API Path (Recommended) End Of Service (EOS) End Of Life (EOL)
Option Profile  PA Option Profile API /api/2.0/fo/subscription/option_profile/pc/index.php /api/5.0/fo/subscription/option_profile/pc/index.php December 2025 December 2026
/api/3.0/fo/subscription/option_profile/pc/index.php /api/5.0/fo/subscription/option_profile/pc/index.php December 2025 December 2026
/api/4.0/fo/subscription/option_profile/pc/index.php /api/5.0/fo/subscription/option_profile/pc/index.php December 2025 December 2026
Control Control List /api/2.0/fo/compliance/control/index.php /api/4.0/fo/compliance/control/index.php December 2025 December 2026
/api/3.0/fo/compliance/control/index.php /api/4.0/fo/compliance/control/index.php December 2025 December 2026
Posture Posture  Info /pcrs/1.0/posture/postureInfo /pcrs/5.0/posture/postureInfo November 2026 May 2027
Resolve Host IDs /pcrs/1.0/posture/hostids /pcrs/5.0/posture/hostids November 2026 May 2027
Policy Policy  /api/2.0/fo/compliance/policy/index.php  /api/4.0/fo/compliance/policy/index.php December 2025 December 2026
 /api/3.0/fo/compliance/policy/index.php /api/4.0/fo/compliance/policy/index.php December 2025 December 2026
 Exception Compliance Exception  /api/2.0/fo/compliance/exception/index.php /api/3.0/fo/compliance/exception/index.php December 2025 December 2026
Authentication MySQL Authentication API /api/2.0/fo/auth/mysql/index.php /api/3.0/fo/auth/mysql/index.php December 2025 December 2026
Sybase Authentication API /api/2.0/fo/auth/sybase/index.php /api/3.0/fo/auth/sybase/index.php December 2025 December 2026
 Authentication API /api/2.0/fo/auth/index.php /api/3.0/fo/auth/index.php December 2025 December 2026

EOS-EOL Warning MessagesEOS-EOL Warning Messages

A warning message appears when an API is nearing its End-of-Service (EOS) or End-of-Life (EOL) date.

Sample - Warning message before the EOS date:

API EOS Warning: This API Path "<qualys_base_url>/api/2.0/fo/knowledge_base/vuln/index.php" will be EOS in 84 days and will be EOL in 265 days. Please use new API path "
    <qualys_base_url>/api/3.0/fo/knowledge_base/vuln/index.php". //

 Sample - Warning Message After the EOS and before EOL date:

This API Path "
<qualys_base_url>/api/3.0/fo/asset/host/index.php" has reached End-of-Service (EOS) and will be EOL in 265 days. Please use new API path "
    <qualys_base_url>/api/4.0/fo/asset/host/index.php". //