Roast Engine

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Roast Engine turns your manuscript into a set of brutal, text grounded one star style reviews so you can spot real weaknesses before launch day.

Don't let your first negative reviews be a public surprise.  

There are a lot of AI Tools that will flatter you. This is not that tool. This tool will read and roast your book. Not once but a dozen times from a dozen different perspectives.

The Roast Engine reads your manuscript and generates the kind of brutal one star style reviews you hope nobody writes. It does it privately, and it grounds the complaints in your actual text so you can fix the real problems before launch. Use it when you want to pressure test pacing, plot logic, dialogue, tone, theology, romance, and content. You will walk away with a thicker skin for release week.

Warning: This tool always leaves negative feedback. If you seek validation, turn back now. Feed the snark tank at your own risk. 

When you upload your manuscript, the tool generates:

• A curated set of one star style reviews written in distinct reader voices that feel like real Amazon complaints
• Specific callouts that quote or describe problem scenes, lines, or patterns in your actual text
• A clear picture of recurring weak spots so you can see where readers are most likely to dogpile

You will walk away with a sharper sense of how fragile parts of your book will hold up under pressure and a clear plan to harden those weak points before real readers weigh in.

Use It To

• Run a pre launch stress test on your story so surprise one star reviews do not blindside you later
• Find the spots that will trigger complaints about pacing, plot holes, theology, romance, tone, or content
• Prioritize your next round of revisions based on what will most frustrate or confuse real world readers
• Prepare your mindset for launch by facing the worst possible feedback in a safe, private environment

Readers do not leave balanced craft notes. They slam star ratings based on emotion, expectations, and a handful of vivid annoyances. Roast Engine mirrors that pattern and turns it into a diagnostic tool. It works because it grounds every complaint in your actual pages and speaks in the recognizable voice of fussy online reviewers. You get the sting of harsh feedback without the public damage. That sting focuses your attention on problems that will hurt word of mouth, which makes your limited revision time more efficient and more strategic.

Related Tools

Explore more Patron Toolbox tools that pair well with this one:

• Not a Copy Editor - Catch typos with a copy edit of your manuscript. 
• Not a Developmental Editor - Get a developmental edit on your manuscript. 
• Structure Analyzer - Evaluate your manuscript based on one of the popular structure formulations. 
• Chapter Summarizer - Create a summary of each chapter. 
• Medical Fact Checker - Check your manuscript for medical and first aid accuracy. 

FAQ

• What is the Roast Engine? Roast Engine is a Patron Toolbox tool that reads your manuscript and generates realistic one star style reviews so you can see how harsh readers might respond before your book goes live.
• Who should use this tool? Fiction and narrative nonfiction authors who want to harden their books against trolling, nitpicking, and disappointed readers, especially those publishing indie or planning a big launch.
• What does it create or check for? It creates a spread of negative review style reactions that highlight issues with various issues tied back to what is actually on the page.
• How does it help authors? It turns vague anxiety about reviews into concrete, actionable reality. You see exactly what the harshest readers might say, then you can fix the issues or prepare your expectations.
• What happens with my data or file? Your manuscript is used only to generate your private roast session and is handled with the same care as other Patron Toolbox tools, not as public training data for general models.
• How much does it cost? The tool is available to Novel Marketing patrons at the $10/mo Patron Toolbox level and higher as part of the broader Patron Toolbox suite.