Moonfable

Inside our small family studio

We use AI to make stories.
Children never talk to an AI.

MoonFable is not an infinite story generator. It is a fixed, downloadable library built with generative tools, independent quality checks, and a real-person approval gate before anything reaches a child.

152finished stories
1,360story illustrations
152aligned narrations
0child prompts

The premise

AI scale, publishing responsibility.

Generative tools made a story library possible for a small family team. They did not make judgment optional. Models can draft, render, compare, and narrate. People decide the worlds, set the rules, reject failures, revise the work, and take responsibility for what is published.

The result sits between two familiar models: it has the freshness of generative media, but the predictable experience of a traditional book. The story a parent previews is the same story a child receives.

From idea to bedtime

A gated production pipeline

Every stage leaves an artifact we can inspect, revise, or reproduce.

01

People + Claude

World and manuscript

We define a series bible—characters, visual rules, reading level, recurring rituals, and safety boundaries—then draft and critique each chapter against it.

02

Human gate

Editorial approval

A person reviews the actual pages for warmth, coherence, age fit, cultural care, and anything a rubric cannot understand. A failed chapter goes back; it does not continue automatically.

03

Gemini on Vertex AI

Referenced illustration

Series character sheets and scene-specific briefs guide each image. Generation is paced, retryable, and stored with model provenance so a scene can be regenerated without rebuilding the whole book.

04

Claude vision + people

Visual quality control

Images are checked against the brief for missing or duplicated characters, continuity, anatomy, unwanted text, scene logic, style, and fear level. People make the final call.

05

ElevenLabs

Narration and alignment

Stable voices carry a series across chapters. Word-level timestamps map the narration to each page so pre-readers can follow along while the story turns itself.

06

Human gate + fixed files

Package and publish

Approved text, images, audio, and timings become a versioned story bundle. The app downloads that bundle for offline use. There is no model call while a child is reading.

A real correction

Quality control has something concrete to stop.

Image models sometimes invent readable labels even when the brief explicitly prohibits text. This scene was held back and repaired before publication.

Held back
Generated winter street illustration containing an unwanted readable shop sign and labels
The generated scene added signage and document-like marks that were never part of the story.
Approved
Corrected winter street illustration with the unwanted text removed
The published scene keeps the composition and characters while removing the invented text.

A real manuscript correction

Independent review catches small errors children notice.

In The Machine from the Sea, a draft described “three children’s hearts” even though the scene contained two children and one twenty-year-old adult. The fresh-context review marked the chapter revise. Publication changed the line to “two children’s hearts.”

Draftthree children’s hearts hammering around him
Publishedtwo children’s hearts hammering beside him

The boundary

What AI does—and what it never gets to decide

AI helps us

  • Explore and critique story drafts
  • Render referenced storybook scenes
  • Check images against detailed briefs
  • Narrate and align audio to pages
  • Repeat mechanical checks consistently

AI never

  • Chats with a child inside MoonFable
  • Receives a child’s name, photo, or prompt
  • Publishes a story without human approval
  • Changes a story after a parent previews it
  • Replaces our responsibility for the result
Etta Rocket and the Dust Moon artwork

The finished experience

Hear “Etta Rocket and the Dust Moon”

A complete six-minute story from the same fixed catalog. The podcast is free and ad-free; the app pairs this narration with illustrated, automatically turning pages.

For builders and curious parents

The tools are generative. The responsibility is ours.

We are continuing to document what works, what fails, and where human judgment matters most. For technical questions, demonstrations, or collaboration, write to hello@moonfable.us.