Gas City v1.0, a comprehensive orchestration SDK, has been released by Steve Yegge, a veteran engineer with experience at Amazon, Google, and Sourcegraph. This new version is a complete rewrite of Gas Town, a multi-agent coding collaboration system, and is open-sourced under the MIT license. Developed by Julian Knutsen and Chris Sells, Gas City allows developers to create flexible agent topologies using declarative building blocks called "packs." The system's architecture includes MEOW (Molecular Expression of Work), built on the Beads memory system and Dolt, a versioned Git database, ensuring all agent actions are recorded for auditability. Gas City supports multiple runtime modes, including tmux, subprocess, exec, ACP, and Kubernetes. Yegge emphasizes that Gas City is not just a coding tool but a general-purpose business process orchestrator, enabling companies to potentially replace costly SaaS tools with in-house solutions, thus transforming enterprise software infrastructure.