Saiki is an open-source agent orchestration framework that empowers developers to build complex AI-driven workflows by writing declarative YAML definitions. Each agent can perform tasks, call external services, or invoke other agents in a chained sequence. Saiki provides a built-in REST API server, execution tracing, detailed log output, and a web-based dashboard for real-time monitoring. It supports retries, fallbacks, and custom extensions, making it easy to iterate, debug, and scale robust automation pipelines.