What This Stack Does
This stack addresses the emerging need for coordinated AI coding at scale. Instead of relying on a single AI assistant for all tasks, these four tools enable different orchestration patterns: ticket-driven autonomous daemons, parallel agent fleets with CI awareness, self-learning swarm systems, and simple multi-engine task runners. Teams can adopt one tool or combine several depending on their workflow maturity and codebase complexity.
Ticket-Driven Development and Parallel Execution
Symphony serves as the foundation for ticket-driven autonomous development. Built on Elixir/OTP by OpenAI, it polls Linear for issues, spawns isolated coding agents per ticket, and manages the full lifecycle through human review and merge. Its fault-tolerant supervision trees ensure agent crashes never cascade, and hot code reloading allows orchestration updates without downtime. Best suited for teams with established issue tracking workflows who want to delegate implementation to autonomous agents.
Agent Orchestrator from Composio handles the parallel execution layer. Where Symphony processes one agent per ticket, Agent Orchestrator decomposes features into parallelizable tasks and manages 30+ concurrent agents in isolated git worktrees. Its standout capability is autonomous CI remediation — build failures get injected back into agent sessions for self-fixing. The zero-friction ao start onboarding and plugin architecture make it the most immediately productive tool in this stack.
Self-Learning Intelligence and Lightweight Runners
ruflo adds Claude-native intelligence to the orchestration layer. Its self-learning neural capabilities track successful patterns across task executions and intelligently route work to specialized expert agents. The 64-agent swarm system with Rust WASM kernels provides high-performance coordination, while built-in RAG integration gives agents access to project documentation and historical decisions during task execution. Ideal for teams deeply invested in the Claude ecosystem.
ralphy completes the stack as a lightweight multi-engine runner for teams not ready for full orchestration platforms. The single bash script cycles through Claude Code, Codex, OpenCode, Cursor, and other AI engines until a PRD is fully implemented. Its simplicity makes it the perfect entry point — teams can start with ralphy for basic multi-agent workflows and graduate to Symphony, Agent Orchestrator, or ruflo as their needs grow.
The Bottom Line
The recommended adoption path starts with ralphy for immediate productivity gains, adds Agent Orchestrator when parallel execution becomes necessary, integrates Symphony for ticket-driven automation, and layers ruflo for Claude-specific intelligence. Total infrastructure cost is zero for the tools themselves — only LLM API usage scales with agent concurrency. All four tools operate independently, allowing teams to evaluate each before committing to a combined workflow.