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You don't need to know how to write a proposal.
You just need to know your story.
This tool will ask you thoughtful questions, listen carefully,
and help you shape what you already know into
the language publishing understands.
Here's what happens when you begin:
1
You share your manuscript — or just paste a few pages. I'll read it and tell you what I found.
2
We have a conversation — I ask one question at a time. You answer in your own words. There are no wrong answers.
3
I review your answers — and gently follow up on anything that could be stronger.
4
Your proposal is written — using your words, your story, shaped into the format publishers expect.
5
You download it — as a Word document and PDF, ready to send.
This is your work. I'm here to help you organize it.
Welcome to Book Proposal Builder
Before we begin, I need your Anthropic API key — this connects the app to the AI. You only do this once.
Cost: Each complete proposal costs roughly $0.15–$0.40 in API usage, billed directly by Anthropic.
How would you like to work?
Choose the style that feels right for you today. Both paths create a complete, professional proposal.
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Quick Build
Professional Mode
Answer clear, focused questions and generate your proposal efficiently. Great if you know your book well and want results fast.
Choose this →
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Deep Build
Guided Mode
We'll take our time and draw out the strongest version of your story. The AI will gently guide you to uncover details that make proposals stand out.
Choose this →
Both modes include an AI review pass after your interview to strengthen any areas that need more depth.
Upload Your Manuscript
Drop your manuscript below, or paste your text. I'll read it and then we'll have a conversation to build your proposal.
or paste your text
Here's What I Found
I've read your manuscript. Here's my understanding of your book — let me know if anything needs correcting before we continue.
Does this capture what your book is about?
Let's Build Your Proposal
I'll ask you one question at a time. Just answer naturally — as if we're having a conversation. There are no wrong answers.
Getting Started
Question 1 of 18
Your answers are saved automatically.
🌿 Your Idea, Clearly
Here is what I heard from you — in your own words, organized simply. Click any line to edit it directly.
This is not your proposal. This is a mirror — showing you your own idea clearly organized. The draft will be built from this foundation.
🌿 Your Idea, Clearly
Here is what I heard from you — in your own words, organized simply. Click any line to edit it directly.
This is not your proposal. This is a mirror — showing you your own idea clearly organized. The draft will be built from this foundation.
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You've given me a great foundation.
Before I write your proposal, I'm going to review what you've shared and find any areas where a little more detail could make a real difference.
Checking clarity of your core idea
Reviewing your audience description
Assessing market positioning
Evaluating your author story
Testing the emotional hook
Let's Strengthen a Few Things
You're off to a great start. A few quick follow-ups will help your proposal really stand out.
Deepening
Refining 1 of 3
Your refined answers will be woven into a stronger proposal.
Writing Your Proposal…
I'm now assembling everything into a professional book proposal. This takes about 30–60 seconds.
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Your Proposal Is Ready!
Your professional book proposal has been created. Download it below in Word or PDF format.
Run an editorial pass to tighten the language and sharpen the hook.
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Word Document
.docx — editable in Microsoft Word or Google Docs
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PDF Document
.pdf — ready to attach to emails and submissions
What to do with your proposal next:
- Read through it and make any personal edits in Word or Google Docs
- Research literary agents who represent your genre (QueryTracker.net is a great free resource)
- Follow each agent's specific submission guidelines
- Send the PDF version when attaching to emails