# FlowBook: The FlowScript Book

> Read the free, source-backed FlowScript book. Build typed workflow automations in code and a visual graph, trace failures, and download the 2026 PDF.

- **Document type:** Book home
- **Canonical HTML:** [https://book.flow-like.com/](https://book.flow-like.com/)
- **Markdown alternate:** [https://book.flow-like.com/index.md](https://book.flow-like.com/index.md)
- **Book:** FlowBook — The FlowScript Book
- **Edition:** Open edition · 2026
- **Publisher:** Flow-Like
- **Language:** en
- **Topics:** Flow-Like FlowScript, visual workflow programming, typed workflow automation, node-based automation, workflow-as-code
- **LLM index:** [https://book.flow-like.com/llms.txt](https://book.flow-like.com/llms.txt)

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FlowScript is Flow-Like's typed textual language for authoring Flows. It represents the same executable workflow as the visual Board while keeping execution inside Flow-Like's governed node model.

The open edition is source-backed and distinguishes implemented behavior from design intent and release-specific claims. Release-check callouts are important limitations, not boilerplate.

## Start reading

- [Introduction: Introduction — One Program, Two Ways to See It](https://book.flow-like.com/introduction/index.md): Learn why Flow-Like FlowScript unifies typed code and a visual node graph, how the same workflow executes, and where AI-assisted software fits.
- [Complete contents](https://book.flow-like.com/contents/index.md): See all published and planned chapters, with publication status clearly marked.

## Published parts

- [Part I: Software That Explains Itself](https://book.flow-like.com/part-1/index.md): Begin with the founding incident, establish the operating principles, and build the first Flow in two honest views.
- [Part II: Thinking and Writing in Flows](https://book.flow-like.com/part-2/index.md): Learn the language through the graph it represents: values, operations, control flow, state, and governed runtime boundaries.
- [Part III: The Two-Way Contract](https://book.flow-like.com/part-3/index.md): Open the machinery that keeps the visual Board and canonical FlowScript aligned through typed meaning and guarded changes.

## Available formats

- [Canonical web edition](https://book.flow-like.com/): Human-readable HTML with interactive examples and workflow figures.
- [FlowBook PDF](https://book.flow-like.com/flowbook.pdf): Downloadable open-edition book.
- [LLM content index](https://book.flow-like.com/llms.txt): Curated machine-readable navigation to every published Markdown page.