Skip to content
StoryHelm
Log inRead a chapter free

For indie series authors

Your readers
remember everything.
Now you can, too.

StoryHelm is an AI manuscript-intelligence platform for indie series authors. It reads and analyzes an entire fiction series, catches continuity errors before readers do, and never writes or rewrites the author's prose.

Read a chapter freeExplore a sample review
14 days free · No credit card required
Sample series review
Book 2 · Chapter 14
“Helen had her father’s eyes,
the same gray they all had.”
Character detail changedHelen → Hannah · gray → brown
Book 5 · Chapter 2
“Hannah glanced up, her brown eyes exhausted.”

Illustrative manuscript excerpts · Interactive sample

Illustrative series review

Same sister.
Different name and eyes.

Book 2 introduces Helen with gray eyes. Book 5 calls her Hannah and describes brown eyes. This is a question for the author to review, not an automatic rewrite.

Book 2 · Chapter 14
“Helen had her father’s eyes, the same gray they all had.”

Book 5 · Chapter 2
“Hannah glanced up, her brown eyes exhausted.”

This sample uses invented passages. Your choice changes only this preview.

Your prose stays yoursNever used for AI trainingWorks with your manuscripts

The details that hold a world together

Keep the spell unbroken.

From the first promise to the fifth-book payoff.

Character continuity

Catch a scar or eye color that changes between books.

Timelines that add up

See when a remembered event no longer matches the book’s own timeline.

Promises worth keeping

Bring unresolved threads back into view before the next release.

Go deeper: Character consistency across a series · Series timeline tracking · Foreshadowing: setups without a payoff · Character voice drift · When your magic system cheats · Pacing analysis, per scene.

Full reads come with the Author, Series and Studio plans, and with the free trial at public launch; the Writer plan gets a Quick scan. You start each cross-book check yourself and see its credit cost before it runs. It does not compare names (a renamed character is treated as a new one), world rules, places, relationships or who knew what between books, and there is no master series timeline. Those stay on your list: the 12-check series continuity checklist walks through each one.

A real case

Catch your Watson’s wound before your readers do.

Dr. Watson’s war wound is in his shoulder in A Study in Scarlet (1887) and in his leg in The Sign of the Four (1890). Given both novels as one series in July 2026, StoryHelm’s cross-book check opened a thread on it without being asked about Watson.

Book 1 · A Study in Scarlet, 1887
“There I was struck on the shoulder by a Jezail bullet, which shattered the bone…”
Book 2 · The Sign of the Four, 1890
“…sat nursing my wounded leg. I had a Jezail bullet through it some time before…”

Selected thread · across books

Jezail bullet: description differs between Book 1 and Book 2

  • description: Bullet that wounded Watson's shoulderA Study in Scarlet · Saved detector summary
  • description: Wound in Watson's leg from Afghan campaignThe Sign of the Four · Saved detector summary

Your call: It is intentional · Not now

Passages quoted from the public-domain Project Gutenberg texts. The thread and its two records are StoryHelm’s own output from a cross-book check in July 2026; each record is the check’s saved detector summary of what that book says, not a quotation. It was one of six threads that check opened, and the other five were not errors. Cross-book checks are part of the Series plan.
Watch the real case

A real case · July 2026

Watson’s wandering wound

From a StoryHelm cross-book check in July 2026: one of six threads it opened; the other five were not errors. The passages are quoted from the public-domain Project Gutenberg texts. The film’s typeset pages, book covers, reading glass, margin notes, canon chart, five-book tags and manuscript page are illustrations; the app screens are StoryHelm’s own captures. Cross-book checks are part of the Series plan.

Read the transcript

One bullet.

Two different wounds.

[On screen: THE SHOULDER, A Study in Scarlet, 1887. THE LEG, The Sign of the Four, 1890. Title: The Case of the Wandering Wound.]

In 1887, Doctor Watson took a bullet to the shoulder.

[A page of A Study in Scarlet, Chapter I. A reading glass finds 'struck on the shoulder by a Jezail bullet'.]

Three years later, he names that first book in the sequel.

[A page of The Sign of the Four. 'A Study in Scarlet' is highlighted, with a gold thread back to Book 1. Further down: 'sat nursing my wounded leg. I had a Jezail bullet through it'.]

A few paragraphs on, the same bullet is in his leg.

[ARTHUR CONAN DOYLE, two novels, three years apart. The two passages side by side, a red thread from 'shoulder' to 'leg'. Margin notes: shoulder! no, the leg. both?? a ricochet?]

Arthur Conan Doyle moved his own narrator's war wound.

Fans still argue about it.

[The StoryHelm helm and both covers. App stats: 86,522 words attached; 2 of 2 read for context.]

StoryHelm read both novels.

[Continuity Watch, July 2026. Sherlock Holmes, saved series check: 6 threads ask for your call.]

Nobody asked it about Watson.

[The inbox: four threads about an oak cudgel, one about John Watson's role, and thread 03, ringed: Jezail bullet: description differs between Book 1 and Book 2.]

It found the wound on its own.

[The thread. Book 1 record: Bullet that wounded Watson's shoulder. Book 2 record: Wound in Watson's leg from Afghan campaign. Each marked Saved detector summary.]

Shoulder in book one.

Leg in book two.

[Evidence view, Sherlock Holmes, 1 of 6 threads: earlier and later source side by side, each a detector summary, exact passage unavailable. Buttons: It is intentional; Not now.]

Both in view, for you to decide.

[THE HOLMES CANON: 60 stories, 40 years, on an 1887 to 1927 timeline. The first two novels are marked THREE YEARS IN.]

That's not a knock on Doyle.

He wrote sixty Holmes stories over forty years.

Even he couldn't hold it all in his head.

[Five book covers, The Awakening to Lies We Keep. Tags threaded to them: SCAR, left hand; EYES, gray; PROMISE, the sealed letter. BOOK FIVE.]

Neither can you.

By book five, every scar, eye color and promise is yours to keep straight.

[StoryHelm on its demo series, The Ember Crown Saga: the series library card, then a Continuity Watch thread, Ser Calder Von: physical description differs between Book 1 and Book 3.]

StoryHelm reads your whole series, keeps one shared canon,

and flags the details that drift between books.

[A manuscript page under a reading light. On screen: It reads. It never writes your prose. Buttons: It is intentional; Not now.]

It reads.

It never writes your prose.

You decide what stays.

[On screen: Catch your Watson's wound before your readers do.]

Catch your Watson's wound before your readers do.

[The StoryHelm wheel and wordmark. Command Your Series.]

Read a chapter freeRead the casebook

14 days free · No credit card required

Read the casebook
The Briarwood SeriesSample canon5 books · 3 key areas · One connected story
Series canon
Helen BriarwoodMarcus’s sister · Gray eyesSource: Book 2 · Chapter 14
Briarwood EstateLocation

One series. One memory.

Your whole world.
Already connected.

StoryHelm builds a canon for each book you’ve written and gathers them in your Series Atlas, so you can spend less time maintaining a series bible.

  1. 01Upload your backlist and draft
  2. 02Review each potential conflict with both versions side by side
  3. 03Make the call. Keep your voice.
See how it works
  1. 01Upload your backlist and draft
  2. 02Review each potential conflict with both versions side by side
  3. 03Make the call. Keep your voice.
See how it works

The story is yours.
The final word is, too.

Reads, never rewrites

Your original manuscript prose stays untouched.

Your work stays private

Your manuscripts are never used for AI training.

Ready for your editor

Export manuscript, canon, and open issues in one DOCX.

Made for the long story

One plan for
every book.

Cross-book checks are run with credits; the Series plan carries 1,500 a month.

Compare all plans

Series

$59/ month, billed annually

$708/year · or $74 billed monthly

  • Every book’s canon in one Series Atlas
  • Cross-book contradictions
  • Series-wide thread tracking
Start my free trial14 days free · No credit card required
Compare all plans

The Series Continuity Library

Free guides for series authors.

Continuity, story bibles, series craft and the publishing business, one topic at a time.

Browse the whole libraryContinuity and story-bible tools compared

A few things worth knowing.

What is StoryHelm?
StoryHelm is an AI manuscript-intelligence platform for indie series authors. It reads and analyzes an entire fiction series, catches continuity errors before readers do, and never writes or rewrites the author's prose. It is built from 61 analysis passes across 7 workflows, powered by Claude; a Full read runs nineteen of them on each book.
Can AI check my novel for continuity errors?
Yes, within limits worth knowing. In a Full read (the Author, Series and Studio plans, and the free trial at public launch), StoryHelm checks each book against itself and flags contradictions inside it, from a trait that changes to a clock that breaks, often quoting the line that raised it. A cross-book check you start compares the appearance, distinguishing marks and voice each book records for a character with the same or a nearly identical name, and the same event's year, month, season or length between two fully read books, naming both books and what each one records. It does not compare names, world rules, places, relationships or who knew what between books. You decide what changes. More in What an AI continuity check does, and doesn't.
Does StoryHelm write any of my prose?
StoryHelm reads and analyzes your manuscript. It does not draft or rewrite your original prose. You review each finding and decide what changes. Two disclosed features produce text that isn’t your manuscript: Ship Dock drafts pitch material about your book (a query letter, synopsis or blurb) for you to review and edit, and Translation Studio produces machine-generated translated editions of a finished book.
Is my manuscript used to train AI?
No. Neither StoryHelm nor Anthropic trains any model on your manuscript. It is processed to produce your results, and Anthropic keeps API inputs and outputs for a limited window before deleting them, as the privacy page explains. To have your data exported or deleted, email [email protected] and a person handles it.
Does StoryHelm build a series bible?
It builds a canon for each book: characters, places, factions, items and events, and you can confirm or correct any entry. Your Series Atlas gathers every book's canon in one place, and you can export a Series Bible as PDF, DOCX or Markdown.
Can I bring a series I’ve already published?
Yes. Add your published books and your new draft to the same series. StoryHelm builds a canon for each book and gathers them in your Series Atlas, and a cross-book check you start compares what the books record. The Series plan is built for series: unlimited books and 1,500 credits a month.
How much does StoryHelm cost?
Four plans, billed annually: Writer $14, Author $35, Series $59 and Studio $199 a month. Billed monthly, Writer is $19, Author $44 and Series $74; Studio is annual only ($2,388 a year). Full reads start on the Author plan. The Series plan is built for series: unlimited books and 1,500 credits a month. A free 14-day trial, with no card needed, comes at public launch. Full detail is on the pricing page.
Do I need to change my writing tools?
No. Bring your existing manuscripts as Word documents, EPUB, PDF or plain text. You can keep drafting in your preferred writing tool, then import a new version when you are ready for another read.

Give your next book a memory of every book before it.

Read a chapter free

Bring one chapter. See what StoryHelm notices.

StoryHelm

Command Your Series. The author holds the pen.

© 2026 StoryHelm