Affiliate disclosure: This guide mentions History Co-Author, an AI writing kit for narrative history. If you buy through those links, BookPublisherTools earns a commission at no extra cost to you. I bought History Co-Author (the front end and the History Genre Vault upsell) and read every file. I haven’t written a book with it or watched its course, so nothing below is a tested result.
Last checked: 4 October 2026.
AI can help you write a history book. It can also make up a quotation, move a battle by a year or give a real person feelings no source records. In history, those aren’t style problems. They’re errors, and readers who know the subject will find them.
This guide is a workflow for writing a history book, specifically narrative history (a true story told with a novelist’s craft, with notes and a bibliography at the back), using ChatGPT or Claude without letting the AI invent the past. It works whether you use a ready-made kit or your own prompts. The core idea is simple: the research comes first and gets written down, and the drafting only uses what the research recorded.
Step 1: Pick a story the record can support
Narrative history needs sources with people’s own words in them: letters, diaries, logbooks, testimony, speeches, reports. Before you fall in love with a topic, ask:
- Did people at the time write about it? A siege with surviving diaries is a book. A legend with no records is not, at least not as narrative history.
- Can you read the sources? Transcribed editions and digitized archives make the work far easier than handwritten originals.
- Is there someone to follow? Readers follow people, not dates. You need three or four people whose actions the record tracks.
- Are any of them alive, or recently dead? Take more care with them. Use their own recorded words and don’t state their feelings as fact.
A useful test: can you name a scene from the record (a place, a day, a person, something said) that would make a strong opening? If not, keep looking.
Step 2: Find the angle and the shape
Most history topics have already been written about. Your book needs a reason to exist: a fresh angle. That might be an overlooked person, a different side of the same events, a new source, or a question earlier books didn’t ask.
This matters more on KDP now. Since late September 2026, KDP has limited new title creation to two per book format each week (KDP Help: Create a Book; The Bookseller reports it was ten before). AI makes it easy to turn out lots of thin books, and the cap rewards the opposite. One well-researched book with a clear angle is a better use of a slot than three that retell the encyclopedia.
Some ways to find an angle that’s yours:
- Go local. Your town, county or state during a big event: its regiment, its flood, its factory, its newspaper. Local archives and historical societies often hold sources no national book has used.
- Follow a minor figure. A nurse, a clerk, a ship’s cook or a junior officer who left letters can carry a story the famous names can’t.
- Start from a source. A published diary, a court record or a run of letters can be the backbone of a book.
- Ask the reader’s question. What do people who already love this subject still wonder about? Reviews of existing books, especially the critical ones, show what readers felt was missing.
Then choose a shape. Plain chronology (“and then, and then”) is the weakest option. Stronger shapes include:
- The countdown: the days or hours before an event
- The braid: two or three storylines that converge
- The relay: the story handed from one person to the next
- The approach: a slow build toward a moment the reader knows is coming
And decide whose eyes the reader sees through, chapter by chapter. That choice does more for readability than any amount of polish later.
Step 3: Research before you write
This is the step AI gets wrong most often when you skip it, so do it deliberately:
- Go to the sources in order. First, transcriptions: documentary editions, published papers, archive transcripts. Then published histories that quote the sources. Use an encyclopedia only as a route to a source, never as the source.
- Copy quotations exactly, with where you found them.
- Label every quotation before you write a word of prose.
Here’s a labeling system worth stealing, whatever tools you use:
The NOT TO BE USED list matters more than it looks. Every famous event has a “famous quote” nobody can trace. Writing it down as banned stops it slipping back into chapter 9.
If you use AI to help research, ask it for sources, open them yourself, and copy the words from the source, not from the AI’s summary.
Step 4: Build your planning files
Before drafting, put the book’s decisions into a few documents you’ll load into every writing session:
- A book bible: the story, the angle, the shape, the people you follow, the voice (with a sample paragraph), and rules like spelling (American or British).
- A research file: the facts, figures and labelled quotations, with sources.
- A names file: one spelling for every person, place and ship, with a short phrase that tells the reader who or what each one is.
- A chapter outline: what each chapter does and which research it draws on.
- A book state: a running summary of what’s been written so far: what’s been revealed, which numbers and dates are fixed, where each person is.
These files are what keep a 25-chapter book consistent. Without them, the AI forgets that it spelled a name differently three chapters ago.
Step 5: Draft one chapter at a time
Now the writing. A few rules make AI drafting much safer:
- One chapter per conversation. Long chats drift. Start fresh, load the planning files and the latest book state.
- Build a context lock first. Before any prose, have the AI list the exact quotations, figures, names, events and period details this chapter will use, with sources, taken from the research file. Check that list. It’s much easier to catch a wrong date in a list than in 3,000 words of prose.
- No research while drafting. The drafting step works only from the research file. If something’s missing, go back to Step 3.
- Texture needs sources too. Weather, food, tools and the shape of an ordinary day should come from the research file (a diary entry, a period cookbook, a ship’s log, a weather record). If not, frame them clearly as general context, as in “most soldiers of the time carried…”. Never make up dialogue, thoughts or feelings for anyone, named or unnamed.
- Watch the AI habits. Words like “delve” and “tapestry”, clichés like “little did they know”, and hedges like “must have” are signs to edit.
- Update the book state at the end of each chapter, then start the next conversation.
Prompts you can adapt
The search chatgpt prompts for writing a non fiction book is popular, so here are three short prompts that follow this method. Adjust them to your book:
- Context lock: “Using only the research file and names file, list every quotation (with its label), date, number, name, event, place and period detail (weather, food, tools, routines) chapter 7 will need for the scenes in the outline, each with its source. Don’t write any prose yet.”
- Draft: “Write chapter 7 from the approved context lock only. Use each quotation according to its label: EXACT, EXACT (QUOTED IN) and TRANSLATED word for word, PARAPHRASE only as reported speech, and never anything marked CANDIDATE or NOT TO BE USED. Don’t add any fact, period detail, dialogue, thought or feeling for anyone, named or unnamed, that isn’t in the lock. Follow the voice in the book bible.”
- Self-check: “List every factual claim in the chapter you just wrote (quotations, dates, figures, names, events, places and period details) with its source in the context lock, and flag any that aren’t in the lock.”
Prompts like these help, but they’re only as good as the files behind them.
Step 6: Write the back matter from the research
History readers expect notes. Build them from your research file, not from memory at the end:
- Cast of characters for books with many people
- A note on names, explaining any spellings you chose
- A note on sources: what the record holds and where it’s thin
- Chapter notes tying quotations and key claims to sources
- A selected bibliography
If you’ve labelled quotations and kept the book state up to date, most of this already exists in rough form.
Step 7: Check, edit and publish honestly
- Fact-check every factual claim against the source it cites: quotations word for word, plus dates, figures, names, events, places and period details. The context lock shows the chapter matches your research file. Only checking the sources shows the research was read and attributed correctly.
- Read it aloud. AI prose often looks fine and sounds flat.
- Get a second reader, ideally someone who knows the period.
- Disclose AI-generated content to KDP. KDP’s content guidelines separate AI-generated content (text, images or translations an AI tool created) from AI-assisted work (you wrote it and used AI to brainstorm, edit or check it). You must disclose AI-generated content, and it counts as AI-generated “even if you applied substantial edits afterwards”. AI-assisted work doesn’t need disclosing. If the AI drafted your chapters, that’s AI-generated. Answer honestly.
ChatGPT or Claude?
Either can do this work. What matters more is that you use a project (a workspace that keeps your planning files attached to every conversation), on a plan with enough room for your files. Check the current limits for the plan you’re on. OpenAI’s Projects help page lists 5 files per project on ChatGPT Free and 25 on Go and Plus, so the five planning files fit even on Free, but long files and long chats are easier on a paid plan. A ready-made kit adds its own files, and History Co-Author’s vendor says it needs a paid plan. Choose the one you find easier to work with. The method above matters more than the model.
Using a ready-made kit: History Co-Author
You can build all of this yourself. It takes time to get the prompts and files right. History Co-Author is a kit built around this kind of method. From reading its files:
- Three Markdown files you add to a Claude or ChatGPT project: a framework with the writing rules (698 lines), a setup prompt (863 lines) and a style pack with banned words and habits (186 lines).
- An 18-step setup that walks you through the story, angle, shape, whose eyes and voice. At each decision it offers three lettered options with a recommendation. Research happens at three set points, each with a cap on lookups.
- The quotation labels shown above, plus a NOT TO BE USED list.
- Five planning files: Book Bible, Research Bible, People, Places and Entities, Chapter Outline and Book State.
- One chapter per conversation, each starting with a Context Lock you approve. At the end, “Close out the book” produces a cast of characters, a note on names, a note on sources, chapter notes and a selected bibliography.
- A register library of nine narrator voices, each with a sample passage, and three reading presets.
What it costs: $17 for the front end during launch week. The vendor says it rises to $27 after 23:59 EST on Wednesday 7 October 2026. You also need a paid AI plan, about $20 a month according to the vendor. The front end covers general narrative history. Six specialist kits (Ancient World, Battles and Campaigns, Christian History, Historical Biography, Prehistory and Archaeology, Young Readers) are in the History Genre Vault upsell at $67, or $97 with plugins. The sales page states a 14-day refund, handled by the vendor.
What it isn’t: software, or a guarantee of accuracy. The vendor’s own FAQ says it doesn’t promise zero errors. You still do Step 7.
For a line-by-line look at the files, the upsells and the claims I’d ignore, read my full History Co-Author review.
A bonus: your research is a puzzle book waiting to happen
This is where BookPublisherTools comes in. A finished history book leaves you with a names file and checked facts: the hard part of a themed puzzle book. With Puzzle Maker Pro, you can turn that into a companion:
- How to make a history crossword puzzle book with clues traced to your research
- History word search books that teach, with short history notes alongside the puzzles
- A history activity book for kids if you write for young readers
- WW2 and Civil War crossword puzzle books for war topics
- Bible puzzle books for adults if you write church history
Turn your course or book into a puzzle book explains the companion idea for any subject.
FAQ
Can ChatGPT or Claude write a history book for me?
They can help plan and draft one, but they can’t be trusted with facts on their own. The safe way is to research first, record everything in files the AI works from, and check every factual claim yourself against its source: quotations, dates, figures, names, events, places and period details.
Can I publish an AI-assisted history book on KDP?
Yes, but KDP asks you to disclose AI-generated content (text the AI wrote, even if you edited it) when you publish. Using AI only to brainstorm, edit or check your own writing counts as AI-assisted and doesn’t need disclosing. Read its content guidelines and answer honestly.
How long should a narrative history book be?
Many run 20 to 26 chapters of about 3,000 to 3,500 words, which is the default plan in History Co-Author’s setup. Shorter books work too, especially in a series.
Do I need footnotes?
Narrative history usually keeps notes at the back, by chapter, rather than footnotes on the page. Readers still expect them.
What’s the hardest part of writing a history book with AI?
Keeping the AI from filling gaps with invention. Labelled quotations, a context lock before each chapter and no research during drafting are what keep it honest.
See History Co-Author’s current price and what’s included (affiliate link)