GhostAI: AI-Powered Editing Tools for Book Authors
What is GhostAI?
GhostAI is currently in early beta. Features, skills, and capabilities are under active development and subject to change. By getting early access, you're helping shape the future of AI-assisted book writing on Leanpub.
GhostAI is a brand-new suite of Claude Code skills purpose-built for book authors. Unlike web-based AI tools that work on snippets of text, GhostAI operates at the file-system level — it understands your full manuscript structure, maintains context across chapters, and integrates directly with your writing workflow. GhostAI acts as your AI development editor, copy editor, and structural advisor.
- /ghost-review — Development editor: reads your full manuscript structure, provides feedback on organization, flow, pacing, gaps, and repetition
- /ghost-edit — Copy editor: line-level editing for grammar, clarity, tone, and technical accuracy on individual chapters
- /ghost-draft — Writing assistant: generates a first draft from your outline
- /ghost-expand — Writing assistant: expands bullet points and notes into polished prose
How to Get GhostAI
GhostAI is currently available exclusively to attendees of our GhostAI Workshop, Full Day Workshop, and Book Bootcamp programs. All include Early Beta GhostAI Access as part of the package — you'll have GhostAI months before anyone else.
The Future of GhostAI
Our plan is to eventually open source GhostAI and make it available to all Leanpub authors. But that's months away. Right now, we're developing GhostAI with feedback from our early users through Book Weekend and Book Bootcamp. By joining one of these programs, you get to use GhostAI months ahead of everyone else — and you help shape what it becomes. If GhostAI helps you write a book that generates thousands of dollars in revenue, early access is worth far more than $999.
Requirements
GhostAI requires Claude Code (a terminal-based AI tool) with an Anthropic API key. macOS or Linux required (WSL2 on Windows is fine). GhostAI is designed for technical authors who are comfortable with the terminal.
Leanpub authors love Leanpub.
We're authors too, and we built Leanpub to be the platform we would love to use. It turns out, we weren't alone...
As an academic, I like Leanpub because it lets me write and get my ideas out there quickly. Leanpub is simply the best place for publishing my books.
Roger D. PengAssociate Professor of Biostatistics at the Johns Hopkins Bloomberg School of Public HealthLeanpub's book-creation tools allowed me to focus on creating the types of books I wanted to write instead of worrying how to create my own book publishing toolchain. I have never regretted using Leanpub to publish my ebooks.
Chris HartjesThe Grumpy ProgrammerLeanpub takes the pain out of publishing. They provide the tools, you provide the books and then magic happens.
Ryan BiggAuthor, Multitenancy with RailsI love using Leanpub because I can write my book using simple Markdown notation. Leanpub let's me focus on my content and they handle the rest.
Taylor OtwellCreator Of LaravelLeanpub is a game changer for independent authors, removing the hassles associated with formatting, book production, and electronic sales, freeing up the time to do what we do best: write.
W. Jason GilmoreAuthor, Easy Laravel 5Leanpub helped me achieve my goal of publishing a book. Its simple, easy to use interface got my book up and making money within weeks, I love Leanpub!
Samantha LaingGrowing AgileLeanpub helped me gauge interest in my book, get payments early on when it was only a few chapters, and has got me a bunch of sales just from people browsing around the site.
Phil SturgeonAuthor, Build APIs You Won't HateLeanpub helps me see my books as I write them. Even better, I can find readers early, to read my books and offer suggestions. I can pivot, if I see the need.
Johanna RothmanAuthor of 8 Leanpub books and counting…Leanpub made it simple for me to run with my book idea and build my reputation in the Ruby community. I went from first draft to first sale in days, not months or years.
Aaron SumnerAuthor, Everyday Rails Testing with RSpecFour years ago, I joined Leanpub to just give it a try. Today, over 28,000 book sales later, I cannot help but say that I'm the biggest Leanpub fan on this planet!
Manuel KiesslingAuthor, The Node Beginner BookLeanpub makes publishing your own book super easy. The fact that you can release updates continually helps with the mindset of getting a minimum version out ASAP and then iterating to improve.
Karen GreavesGrowing AgileI earn more royalties from my books on Leanpub than I do with well established publishers or through Amazon (which I publish on thanks to Leanpub's mobi conversion).
Paul BradshawPaul runs the MA in Online Journalism at Birmingham City UniversityLeanpub allows me focus on content, takes care everything else and offers an amazing author royalty. It’s a fantastic platform for writing and publishing books.
Simon BrownAuthor, Software Architecture for DevelopersI love that Leanpub makes writing and publishing a beautiful book so simple. I no longer spin my wheels with layouts and formats - Leanpub gets out of the way when it's time to write, and then automates everything when it's time to publish.
Daniel RootAuthor, Trello DojoWith Leanpub, the first person who purchased my book for $9.99 almost two years ago (and only received a preface, and two short intro chapters) has had access to almost every bit of knowledge I've gained in those two years, and *that's* the value.
Jeff GeerlingAuthor, Ansible for DevOpsSimple and lean, forces me to focus on writing and marketing, and pays excellent royalties.
Reg "Raganwald" BraithwaiteAuthor, JavaScript Allongé, the "Six" EditionLeanpub forces you to focus on writing and gives you immediate feedback. Allowing Leanpub to take care of the curation and delivery helped me focus on shipping my book.
Paul RedmondAuthor of Writing APIs With LumenWhile most eBook exporter apps today can generate PDF files and many support ePub, there's one tool we recommend above all after trying 8 of the most popular: Leanpub.
Matthew GuayContent Marketer at Zapier
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Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.
You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!
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Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earned over $14 million writing, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Write and Publish on Leanpub
You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!
Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.
Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.