spire-pipeline is a plugin for Claude Code / Cowork that takes a project from a vague idea to a finished, verified build - across as many sessions as it takes, without losing the plot between them. Four skills: DESIGN-SWARM ▸ give it a hard problem and instead of one answer it generates several competing approaches, each deliberately biased a different way, attacks them all at a critique gate, and hands you the survivors to pick from. ends at a design you signed off on. never builds. RUN-LIST ▸ turns that design into one planning doc: the build split into ordered sessions, what depends on what, a paste-ready prompt per step, live status. the document IS the project state — any future session reads it cold and knows exactly where things stand. CONDUCTOR ▸ executes it like a foreman who never touches the tools. collects every decision up front in one sitting, then runs for hours without pinging you, farms each step to worker agents, and refuses to tick anything done unless a mechanical probe proves it happened. a worker saying "finished!" counts for nothing; a file existing with the right contents counts. SETUP (optional) ▸ first-run onboarding - detects what it can about your machine, asks two questions, writes a minimal config. you never need it; zero-config runs fine on safe defaults. Works on anything with 3+ steps - code, docs, content, systems. This is the actual engine I run my own work through, published as-is: the house-specific parts swapped for a config layer you fill in yourself (or don't — the defaults are safe, and every skill prints whether it's running on your config or on defaults). CREDIT ▸ two of the mechanisms are borrowed and credited, both MIT, both from @Ari Evergreen - https://www.aris-space.com/ the brainstorming-swarm that design-swarm is adapted from, and the context-pack contract the conductor uses to brief its workers. I built the pipeline around them - the planning, the multi-session state, and the probe-verified "done" are mine.