Every idea, woven into a story you can hear, see and shape.
A crew of AI agents writes it, voices every character, paints each scene and scores it with
music — live, while you listen. Choose what happens next, or just say it.
10specialised agents — but only two call a language model, so each story costs about two calls
4layers of safety, starting with rules no model can be talked out of
~3 suntil “Once upon a time…” — by then the whole story, both endings included, is written
0 €runs entirely on free tiers and open models
Weaving your story…
The crew is gathering.
StoryWeaver
StoryWeaver presents
You decide
What should happen next?
Tap a path, or hold Talk and say it.
The story is waiting for you…
The end
Let's pick a different story
That one isn't a story I can tell.
Your Storybook
Every story you've heard, kept with its pictures.
Open a book to read it again, page by page. Stories are kept in this browser only.
How StoryWeaver works
An agent crew that weaves stories you can step into.
StoryWeaver is a prototype of an immersive storytelling agent. Below: what we mean by immersive, the agents
that make it happen, how a story flows through them, and the design decisions — and trade-offs — behind it.
What "immersive" means here
Immersion is the moment you stop noticing the app and start living the story. Five things get you there:
🎧
Hear itA narrator and a distinct voice for every character, music that rises with the tension, and sounds that belong to the scene.
🖼️
See itA painted picture for every minute of story, appearing at its most striking moment, with slow camera moves and weather in the scene.
📖
Follow itClassic storytelling: the world and hero first, then an adventure where every event follows from the last.
🧭
Shape itEvery story has a moment where you choose, or just say what you'd like ("add a dragon!") — the story listens, adapts, and the newcomer joins the cast.
⏱️
Fit itSized to the time you have, landing its ending on time — and the hero can carry your name.
Meet the crew
Ten roles, each with one job. Only two call a language model for each story; plain code and your browser do everything that should be instant and predictable. The curtain rises on them one by one — tap anyone in the line-up to bring them back into the spotlight.
How a story flows
One LangGraph workflow on a stateless Python API: the Guardian and the Storyteller work in parallel, the Editor checks every line, and the whole story — both endings included — reaches your browser before it begins. While you listen, nothing waits.
Safety in four layers
Children may be listening, so safety is designed in — not bolted on. Deterministic rules come first because they are instant and can't be argued with; models handle nuance.
Design decisions & trade-offs
A prototype is a set of choices. These are the ones that shaped StoryWeaver.
Measured, not assumed
From the evaluation suite (safety red-team, a single-prompt baseline comparison, reading level and timing). Details in the README.