What Omnimancer is (a headless coding agent for Claude, OpenRouter, DigitalOcean, Ollama and 13+ backends), the stream-json and exit-code contract an orchestrator builds against, how Factory Nexus runs it in swarms, and the five production failures that shaped it: narration exits, permission theater, timeouts, quadratic token cost, and rate limits that lost the whole session.
A tool-agnostic playbook for running several AI coding agents at once: the three isolation layers, when to use fan-out vs hub-and-spoke coordination, what parallelises and what doesn't, the five mistakes that cost us the most time, and an FAQ.
A complete git worktree setup for running AI coding agents in parallel — worktrees, port and database isolation, merging and cleanup — then the six failure modes we hit in production and the point where hand-rolling stops being worth it.
A precise definition of AI agent swarm coding, the four-layer architecture behind it (decomposition, isolation, verification, integration), an honest comparison of agency-swarm, Claude-Flow/Ruflo, Factory.ai and Factory Nexus, and a straight answer to Thoughtworks' caution rating.
How Factory Nexus runs parallel AI coding agents from the Agent Panel — orchestration and file lanes, worktree isolation, the three-reviewer gate, smart retries, and the integration verifier that runs before anything reaches a PR.
Why we're writing about parallel AI coding agents, git branch isolation, and AI code review — and what to expect from the Factory Nexus engineering blog.