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System requirements

Supported AI coding agent platforms

You need one of the following AI coding agent platforms installed and authenticated:
  • Claude Code
  • GitHub Copilot CLI
Run diffblue-agents install to select your agent platform or provide a custom path.
The Diffblue Agents archive includes bundled Java and Node.js runtimes. You only need to install Java and Node.js if needed for building and testing your target project.

Project requirements

Your project must be in a Git repository with a clean working tree.

Java projects

Python projects

Network access

The Diffblue Agents server runs locally. Network access is required for:
  • License activation and validation (https://api.licensespring.com, https://licensing.diffblue.com)
  • A working AI coding agent platform
  • Dependency resolution (Maven Central, Gradle repositories, PyPI, etc.)