I am currently building an ai story app called Inky. It is not a wrapper for a single LLM call. It is a multi-agent system designed to handle narrative arcs, character consistency, and world-building state.
Most people think building an ai story app is about finding the right prompt. It isn't. It is about engineering the feedback loops between agents. I have been working in public on this project for several months, and the lessons learned the hard way have shaped the architecture of my multi-product studio.
The Artifact: Why Inky Exists
Inky is a digital product designed to solve the problem of narrative drift. When you ask a standard LLM to write a story, it loses the plot—literally—around the 2,000-word mark. Characters change eye color, dead villains reappear, and the pacing collapses.
To solve this, I stopped looking at AI as an author and started looking at it as a team. In my studio, AI is the operating layer. For Inky, this means agentic engineering: a system where one agent outlines, another drafts, a third audits for consistency, and a fourth manages the long-term memory (state).
Moving Beyond the Prompt: Agentic Engineering
When you are building an ai story app, the prompt is the least interesting part of the stack. The real work is in the orchestration. I built a custom layer called VERA to handle this. VERA doesn't just send a string to an API; it manages a state machine.
The Orchestration Layer
In the Inky architecture, the process is broken down into discrete steps:
- The Architect Agent: Takes the user's seed idea and builds a structural outline. It defines the 'beats' of the story.
- The Lore Master: A dedicated agent that maintains a JSON-based 'World Bible.' If a character is established as left-handed in chapter one, the Lore Master ensures they don't throw a spear with their right hand in chapter ten.
- The Weaver: This is the drafting agent. It only sees the current beat and the relevant snippets of the World Bible.
- The Critic: An audit agent that compares the Weaver's output against the Architect's outline. If the beat was missed, the Critic triggers a retry.
This is agentic engineering in practice. It is not about one 'smart' model; it is about a system of specialized instruments working in concert.
