Claude Engineer v3 is an interactive framework that leverages Anthropic’s Claude 3.5 Sonnet model for software development assistance. The system enables Claude to identify needs for new tools during conversations, design them, and implement them automatically without user intervention. It features token management via Anthropic’s API, streamlined conversation handling, and can operate in both CLI and web interface modes. The framework’s architecture allows it to become more capable over time as it learns to create and manage tools tailored to specific tasks.