Apache Burr (Incubating) - Build Reliable AI Agents and Applications

Apache Incubating ProjectApache Burr (Incubating) makes it easy to develop applications that make decisions, from simple chatbots to complex multi-agent systems. Pure Python, no magic.0GitHub Stars0k+PyPI Downloads0+Discord MembersSimple, powerful Python APIBuild anything from chatbots to multi-agent systems with a clean, composable interface.Everything you need to build AI applicationsBurr provides the building blocks for reliable, observable, and testable AI-powered applications.Simple Python APIDefine your application as a set of actions and transitions. No DSL, no YAML — just Python functions and decorators.Built-in ObservabilityThe Burr UI lets you monitor, debug, and trace every step of your application in real time. See state changes as they happen.Persistence & State ManagementAutomatically persist state to disk, databases, or custom backends. Resume applications from where they left off.Human-in-the-LoopPause execution and wait for human input at any step. Perfect for approval workflows and interactive agents.Branching & ParallelismRun actions in parallel, fan out / fan in, and build complex DAGs. Compose sub-applications for modular design.Testing & ReplayReplay past runs, unit test individual actions, and validate state transitions. Build confidence in your AI systems.Works with your stackBurr integrates with the tools and frameworks you already use. No lock-in, no wrappers.Trusted by engineers worldwideSee what developers and teams are saying about Burr.PPeanut RoboticsWWatto.aiPPaxton AIPProvectusTTaskHuman