git log?Spine turns a manuscript into a navigable graph. Scenes are commits. Plotlines are branches. Characters are contributors with line-level blame. The structure becomes visible — for editors who need to point at it, authors who need to revise it, and AI agents that can finally reason over a whole book at once.
Free demo: 1 editorial brief + 3 questions + 5 character chats per session, no account needed. Powered by Opus 4.7.
Both fiction and code are causal sequences of decisions made by agents. The primitives map cleanly. A literary critic's mental model and a senior engineer's mental model are the same shape.
Two manuscripts ship pre-ingested. The editor brief is pre-generated and replays the live agent stream — same UX, zero cost. Click through to the workspace IDE: tension ribbon, prose canvas, plot graph, AskDock at the bottom.
Five sisters, one entail, and the slow dismantling of everyone's first impressions.
Napoleon invades Russia. Fifteen hundred scenes. Four hundred characters. One spine.
What's shipped, what's next, what's beyond. We don't bill for what we haven't shipped. Roadmap items in the pricing page are clearly marked.
Your manuscript is not training data. We use providers; we don't train models. BYOK keeps the prose on your own provider bill. Encryption at rest for every secret.
Manuscripts are private by default. We never train on your text. Read the practices.
AES-256-GCM at rest for all secrets. Cookie-bound sessions. Layered abuse defense. SECURITY.md.
MIT-licensed core. Self-host if you want. Read the code.
Spine has just shipped. There are no testimonials here yet because we'd rather leave the cards empty than fill them with quotes we made up. If Spine helps you, your name and your sentence belong here. Write to support@rodyr.com.
Running brief on the first 30k of an unwieldy thriller, before sending notes to the author. The editor brief surfaces the structural seams in fifteen seconds.
Tracing five plotlines through a thesis novel. The plot graph shows which threads converge and which trail off into abandoned subplots.
Mapping causal structure across a 1500-scene 19th-century novel. Character blame and merge commits make centuries-old prose newly legible.
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