Writing a series
One canon, several volumes — a shared codex every book reads, a house style they all inherit, and a check that reads the volumes against each other.
A series is one canon with several volumes. Instead of re-typing your codex into book two and hoping book three remembers what colour someone's eyes are, you pin a fact once at the series level and every volume is written against it.
Starting one
On the bookshelf, open a book's ⋯ menu and choose Start a series from this book…. Name the series; that book becomes Volume 1.
Its codex and cast move up to the series — they are not copied. That matters: a fact living in two places is two answers to one question the moment you edit either of them, and the AI would receive both. Nothing is lost, and every AI call still sees exactly what it saw before. Only the fact's home changes.
Adding the next volume
＋ Volume 2 appears at the end of the series on your shelf, and in the Series room. It asks for three things — title, subtitle, premise — because everything else is already decided.
Before you type anything it shows you exactly what the new volume arrives with:
| Carried | What |
|---|---|
| ✓ | Series canon — live, so editing it from any volume changes it everywhere |
| ✓ | House style — trim, binding, paper, fonts, margins |
| ✓ | Cover look — the same template and palette, rebuilt with the new title |
| ✓ | Author, bio and rights statement |
| ✕ | Not carried — chapters, promotion kit, release checklist, narration, ISBN |
That last row is the important one. A release checklist records what somebody measured on one book; carrying it forward would have volume two claiming a trim nobody checked. The ISBN is per-volume for the same reason — an inherited ISBN is a printing error, not a convenience.
It also tells you which of your plan's book slots the volume will use, before you write a premise rather than after.
The Series room
Reach it from the ⚙ on the series heading on your shelf.
Volumes lists the books in order. A volume whose print format or cover template no longer matches the house says so, and names what differs — "Trim size: 5.5×8.5 (series: 6×9)" — so you can act on it rather than just worry.
The series codex is the shared canon. It reaches the model above each volume's own canon, in every call — writing, outlining, illustrating and auditing alike. Shared characters keep their reference pictures too, so the illustrator draws the same fox in book three as in book one.
House style is set by pointing at a volume: whatever that book is set to becomes what the series shares. There is deliberately no second format panel here — trim and margins are chosen in one place in this app, and a second copy is how two books end up disagreeing about what 6×9 means. Existing volumes are not touched until you press Apply the house.
Two tiers in the Codex tab
While writing a volume, the Codex tab shows both tiers: Series canon at the top, This volume below. Each of your volume's entries has an ↑ Promote control — one click moves that fact up to the series, where every book reads it.
Use the volume tier for what is only true here ("opens the week after the flood"), and the series tier for what must never change.
Checking the volumes against each other
✦ Check the series reads what each volume says happened — its chapter synopses — against the shared canon and against the other volumes, and reports contradictions between books: someone who died in book two and reappears in book three, an age that does not add up, a place described differently.
It is priced like any other AI call and named in the button before you press it.
Two things to know:
- It reads synopses, not prose. A cross-volume contradiction is a claim about what happened, not a sentence you find by re-reading paragraphs — so the better your chapter synopses, the better this works. Each volume's own prose is checked by the consistency check inside it.
- A volume with nothing written is listed as unchecked, above the result. A clean report over a series where two volumes were never read would be telling you the books agree when a third of them was never opened.
Dissolving a series
Dissolve this series deletes the series and its shared canon. Your books survive — every volume becomes a standalone book again, exactly what it was before. But the shared canon is not copied back down into them, so pin anything you still need first.
What the app will and will not tell you
The Series room reports drift — a volume whose settings no longer match the house — and it never claims your books agree with each other. It can see that volume three is on a different trim. It cannot know whether its prose contradicts volume one; that is what the check above is for, and even that reads summaries.
There is no green "in sync" tick anywhere in here, on purpose.