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# What's new

This topic introduces the new features and enhancements in version 26.1 and 26.3 for OpenText™ Performance Engineering for Developers

and DevWeb.

Note: The Help Centers for versions 26.1 and 26.3 are streamlined into a single Help Center. Any version specific changes are indicated where relevant.

In this topic:

## AI-driven Performance Engineering

This release includes the following enhancements for AI-driven Performance Engineering.

Area | Enhancement
--- | ---
MCP support | MCP support is now available, providing a standardized and secure way to leverage AI-driven natural-language prompts to streamline and automate performance engineering workflows. Using Copilot in Microsoft Visual Studio Code, natural language can be used to interact with the DevWeb MCP server to perform common tasks such as: Record a DevWeb script. Generate a DevWeb script from a HAR file. Generate a DevWeb script from a Swagger file. Run DevWeb scripts in Single mode, Single mode with iterations, or Load mode. In version 26.3, the DevWeb MCP server includes the following enhancements: Improved handling of the record, generate, and replay processes. Expanded guidance for working with the MCP server workflows and processes. Provides assistance with writing scripts. Ability to identify high-confidence parameterization candidates, such as user names, passwords, and user identifiers (Beta feature). Ability to create DevWeb scripts using Swagger API specifications, and to edit function parameters. For details, see Integrate Swagger definitions using the MCP server. For details, see MCP integration.

## Load testing and modeling

The following enhancements are included for load testing and modeling.

Area | Enhancement
--- | ---
IP version | Supported from version 26.3 You can now specify an IP version for the Vuser, forcing the system to work with only IPv4 or IPv6. For details, see Customize runtime settings.
ScalUP | When running ScalUP for OpenText Enterprise Performance Engineering tests, you can now specify a location for automatch hosts. You can also run a command to obtain a list of available host locations. For details, see Define hosts and Controller for tests.

## Integrations and ecosystem

The following enhancements are included for integrations and ecosystem.

Area | Enhancement
--- | ---
Create scripts from Wireshark file | Supported from version 26.3 You can now capture your network traffic using Wireshark, and use the output to generate a DevWeb script. Wireshark captures all types of HTTP traffic. For details, see Recording with Wireshark.
Third-party integrations | Documentation added for using node modules to incorporate third-party APIs in DevWeb scripts. For details, see Third-party support.

## Modernization

This release includes the following modernization enhancements.

Area | Enhancement
--- | ---
Use CSV data | You can run scripts using data in a CSV file, rather than manually coding your test (Beta feature). For details, see Build methods for scripts.
New SLA rule | You can now use the Passed Transaction Rank Percentile rule in your SLAs. This rule validates if transaction duration measurements meet a percentile rank, for passed transactions only. For details, see SLA rules.

## See also

- What's new in earlier versions
- Known issues
- Basics

https://admhelp.microfocus.com Performance Engineering for Developers 8942
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