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FlowBook

Complete contents

The open 2026 edition currently includes the introduction and Chapters 1-15. Chapters 16-26, the epilogue, and the appendices are planned and are not yet published. Available chapters are marked Read now · Open draft; the remaining chapter briefs live in the editorial blueprint.

Part I: Software That Explains Itself

Section titled “Part I: Software That Explains Itself”
  1. The 3 A.M. Call: Read now · Open draft
  2. The Manifesto: Constrained Freedom: Read now · Open draft
  3. One Platform, One Flow Model: Read now · Open draft
  4. First Flow: Incident Triage in Two Views: Read now · Open draft

Part II: Thinking and Writing in Flows

Section titled “Part II: Thinking and Writing in Flows”
  1. Nodes, Pins, Wires, and Execution: Read now · Open draft
  2. Anatomy of a FlowScript Document: Read now · Open draft
  3. Values, Types, Collections, and Interfaces: Read now · Open draft
  4. Calling the Node Library: Read now · Open draft
  5. Expressions, Operators, and Readable Sugar: Read now · Open draft
  6. Branches, Loops, Parallelism, and Return: Read now · Open draft
  7. State, Configuration, Runtime Values, and Secrets: Read now · Open draft
  8. Functions, Layers, Handlers, and Caching: Read now · Open draft
  9. Events, Interfaces, and Complete Apps: Read now · Open draft

Part III: The Two-Way Contract

Section titled “Part III: The Two-Way Contract”
  1. Board ⇄ AST ⇄ Text: Read now · Open draft
  2. Identity, Anchors, and Safe Change: Read now · Open draft
  3. The Dual-View Editor and Language Tools
  4. Runs, Logs, Traces, and Versions

Part IV: Building a Real Application

Section titled “Part IV: Building a Real Application”
  1. Capstone: Build Incident Room
  2. Files, Tables, SQL, and Data Studio
  3. FlowPilot and AI-Authored Software

Part V: Extension, Capability, and Trust

Section titled “Part V: Extension, Capability, and Trust”
  1. Build a Custom WASM Node
  2. The WASM Sandbox: Capabilities, Limits, and Consent
  3. Packages, Governance, Versions, and Release

Part VI: Runtime, Deployment, and Contribution

Section titled “Part VI: Runtime, Deployment, and Contribution”
  1. From Flow to Compiled Artifact to Rust Runtime
  2. Deployment Without Rebuilding the Application
  3. Internals: Protecting the Round Trip

Epilogue: Make the System Explain Itself

Section titled “Epilogue: Make the System Explain Itself”

The book returns to the incident room and asks what changes when structure, permissions, data, versions, run history, and the failing operation are available to the people responsible for the system.

The complete subchapter plan, evidence dependencies, and interview requirements are maintained in STRUCTURE.md at the root of this app.