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System requirements

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Supported AI coding agent platforms

You need one of the following AI coding agent platforms installed and authenticated:
  • Claude Code
  • GitHub Copilot CLI
  • Google Gemini CLI
  • OpenCode — open-source agent CLI. Supported providers include Anthropic, AWS Bedrock, and Google. Configure credentials per the OpenCode provider docs.
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.

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Project requirements

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

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Java projects

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Python projects

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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.)