The Sweep AI IntelliJ extension (version 1.20.5) is a sophisticated AI-powered coding assistant that integrates Anthropic's Claude 3.5 Sonnet model with a comprehensive tool ecosystem for IntelliJ-based IDEs. This analysis is based on complete decompilation of the extension's JAR files (45 Java source files generated from Kotlin bytecode), revealing every system prompt, tool implementation, API configuration, and integration detail.
Key Discovery: The extension uses a detailed system prompt that emphasizes minimal code changes and proper file editing format, combined with 10 sophisticated built-in tools that provide comprehensive IDE integration through function calling.