bb is a local-first, open-source IDE designed for loop-driven development, acting as a modular software factory that users can fully control, customize, and automate. Created as a highly flexible environment, bb integrates a diverse range of AI agents—including Claude Code, Codex, Cursor, Pi, OpenCode, Grok, omp, and Hermes—allowing them to work collaboratively within a thread-based architecture. The platform allows users to build their own workbench by treating features such as agent memory, GitHub integration, and scheduled jobs as interchangeable plugins. By leveraging local execution, users maintain ownership of their code and data while benefiting from the power of multiple AI providers.

Functionality centers on enabling agents to spawn, manage, and execute tasks across different threads, machines, or workspaces. It provides a unified interface where complex tasks, such as triaging bugs or refactoring codebases, can be broken down into specific jobs. The platform supports multi-machine workflows and secure remote access through bb Connect, allowing developers to extend their development environment across multiple computers and keep work in progress accessible from anywhere.

Some of the key features are:

• Plugin System: Allows users to build, install, and customize nearly any aspect of the IDE, from sidebar panels to CLI subcommands.
• Agent Orchestration: Enables one AI agent to spawn and manage others, with each agent operating in its own thread.
• Multi-Machine Support: Facilitates distributed development by letting users choose specific machines for task execution.
• Local-First Architecture: Ensures code and data reside on the user's local hardware for privacy and performance.
• Extensible CLI: Provides a command-line interface that allows any program, script, or remote bot to trigger workflows and manage threads.
• Split View Workspaces: Supports organizing multiple chat threads side-by-side for parallel development and task management.
• Permission Sandboxing: Includes configurable permission limits for different machines to maintain security control.

Operation relies on an enrolled host daemon that manages the local development environment and coordinates with the user's chosen AI providers. Users interact with the IDE through the desktop interface or the command line, where they can prompt agents to perform tasks. When a task is initiated, bb creates a thread where the AI can analyze files, run tests, and generate code. Because the system is plugin-driven, developers can extend its capabilities using TypeScript or simple prompts that allow agents to write their own tools and plugins, effectively enabling the IDE to build its own functionality over time.

Some common use cases include:

• Automated Bug Triage: Assigning an agent to analyze logs from services like Sentry to identify the root cause of crashes and implement fixes.
• Project Refactoring: Spawning an agent to refactor large codebases or modules into different architectures while managing dependency updates.
• Cross-Platform Workflows: Using the multi-machine feature to trigger complex build or CI tasks on powerful remote servers from a local laptop.
• Custom Workbench Creation: Building a custom task management system as a plugin that integrates directly into the IDE sidebar and agent toolset.
• Continuous Integration Maintenance: Automating routine tasks such as checking pull request statuses or managing flaky integration tests.