---
name: figcraft
description: >
  FigCraft is an open-source, pure-Rust, offline interface-design, prototyping and whiteboard app (a
  clean-room reimplementation of the Figma Design workflow): frames, auto layout, components,
  styles, variables, vector networks, prototyping, Dev Mode and board files, on macOS, Windows,
  Linux, FreeBSD and the web. Trigger it whenever the user mentions FigCraft or a `.figcraft` file,
  asks what it can or cannot do, which formats it opens or writes, how to script, automate, batch or
  headlessly drive it (figcraft-cli, MCP, the JSON control channel), wants assets prepared for a
  design file, needs output verified or repaired, or asks to troubleshoot it — and when the app is
  not named but the job is one of its jobs: "make a mockup", "design a screen / landing page /
  dashboard", "build a design system", "export these frames to PNG/PDF/SVG", "open this .fig or
  Figma file JSON", "convert this Sketch file", "prototype this flow", "hand this off to a
  developer", "make a retro board". Do not guess capabilities from Figma knowledge — FigCraft is
  not Figma and runs no Figma plugins.
---

**Audit basis.** Refreshed 2026-11-07 against tag **v0.16.0**, commit **`f45b261687880e56d1bad11ec82b45131e57ef8b`** — `git rev-parse HEAD` in the pinned checkout confirms, and the installed `/Applications/FigCraft.app` matches (bundle version 0.16.0, and its binary prints `FigCraft 0.16.0 (f45b261687880e56d1bad11ec82b45131e57ef8b)`). The previous release this skill described was v0.15.0 (`02c38a6d959f0afd82e44d9d67d396266e6ab4a3`).

**v0.15.0 → v0.16.0 delta.** 133 files changed (+4156/−545; the shallow clone holds one commit between the two tags). The automation surface is **shape-identical** — 10 CLI subcommands, 19 MCP tools (set diff empty), 17 control methods, 24 locales — with exactly **one new command id, `text.wrapStyle`** (`auto|balance|pretty`; `spec!` sites 636 → 637, command directory 487 → 488) and `node.set` accepting `wrapStyle`/`textWrap` (`crates/engine/src/cmd/text.rs`). Balance re-breaks each paragraph as narrow as it goes without adding a line; Pretty keeps lines full and moves one word out of an orphan; per-paragraph settings, text-style support and the `.fig` mapping are still open (`docs/ui-parity.md`). Feature work: **the Bend tool curves a sharp point on a click**, handles along the line between its neighbours (`crates/engine/src/canvas/vectoredit.rs`, #1877); **glass is rebuilt to the reference tool's optics** — a thick-lens bend toward the shape's core, its light a line on the 1-unit bevel, splay turning the bend towards the centre, colours split over 8 dispersion steps, and variables accepted on glass effects with frost held to 0–100 (`crates/render/src/glass.rs`, `crates/render/src/backdrop.rs`, #1886–#1889); the browser build gained an **embedding host bridge** (`?host=parent`, `data-host="page"`, host-opened files and a Save handed back under the host's file name in `apps/figcraft-web/src/host.rs`, `hostmode.rs`, `crates/ui-egui/src/host_save_tests.rs`, `packaging/web/README.md`). Hardening: `proto.interaction.remove`/`set` and `layout.setTrack` now **reject a fractional `index`**, and `node.set` **rejects invalid dashes** instead of dropping them (`crates/engine/src/cmd/proto.rs`, `crates/layout/src/lib.rs`); HTML code export can no longer let document text close its generated `<style>` element (`crates/engine/src/dev/codegen/html.rs`); a plugin's `text.preview` is held to the permissions of the command it previews, and a plugin's offered file is written through the confined file helper; MCP prompts render placeholders in one pass (`crates/mcp/src/prompts.rs`).

**v0.14.0 → v0.15.0 delta.** 105 files changed. The automation surface grew by one CLI verb, one MCP tool and one control method (10 subcommands / 19 MCP tools; the control count quoted then was overstated — 17, see Sources). The wave is SVG and `.fig` round-trip fidelity — stretched images, spread shadows and mitred strokes keeping their room, whole ellipses through `.fig` and SVG, connector line styles on `.fig` import — plus plugin-manifest API-version validation and the Layers panel also on Ctrl+1 on Windows/Linux (`crates/engine/src/keymap.rs`).

**Verify against your installed version** — the ArtCraft Launcher auto-updates, so a newer build may differ; every headline count was re-measured at this tag, and code paths that moved were re-cited. The measurement method for each count is in `evidence.md`.

v0.13.1 → v0.15.0 wave, folded to a summary: a **code-export fix batch** (no `inf` for huge finite
numbers, escaped CSS `font-family`, paint opacity on gradient stops, one CSS custom property per
variable), relative line-height/letter-spacing edits that add to the current value, and **no
automation-surface change** beyond the counts above. Deep operational detail — CLI, control-channel
and MCP tables, live sessions, the server — is in `references/automation-surfaces.md`.

# FigCraft

## Overview

FigCraft is a native, offline interface-design and prototyping app written entirely in Rust
(egui/eframe UI — migrated to egui 0.37 this release — tiny-skia CPU renderer, no Electron), built
clean-room from public documentation and observed behaviour against Figma Design (`README.md`,
`docs/target-app-parity.md`). It is **alpha**: the README says "about 49%" of the way to replacing
proprietary tools, while the measured table says ~53% ready, ~85% feature breadth and ~94%
core-editor breadth (`ROADMAP.md`, `docs/target-app-parity.md` › Headline). It runs on macOS,
Windows, Linux, FreeBSD and in the browser via WebAssembly (the browser page now exposes a
`window.figcraft` control channel); source is GitHub `storytold/figcraft`, MIT OR Apache-2.0. Every
user-visible action is a command in one registry — **637 `spec!` registration sites across the
engine** (488 of them in the command directory; some ids are const-built; count your build with
`figcraft-cli commands --json`), covering **212/212 catalogued menu items** (`crates/engine/src/cmd.rs` `spec!` macro,
`crates/engine/src/catalog.rs`, `docs/parity-checklist.md`) — dispatched identically by the UI,
CLI, control channel and MCP server.

The v0.12.x line (since the previous audit at v0.11.2) added: **Sketch import** (Sketch 48 and
newer, `crates/engine/src/sketch_import_tests.rs`, PR #1021); a **`.fig` export Figma imports,
with component set properties** (PR #1152) and `.fig` imports that keep layers and library links on
large files (PR #989) and state their coverage (PR #951); **new Dev Mode code targets** — Vue
single-file components, **React + Tailwind** page code with a Tailwind theme export, Dart constants
for Flutter, Android Vector Drawable, ArkUI — with full-precision px→rem and transliterated
class names; **boards growth** (dot grid, curved connectors, re-attaching connector ends, timer
and voting sessions, board templates and tables: 9 → **21 `board.*` commands**, the count that
stands at v0.16.0); **plugin API 4 in that wave, 6 now**
(widgets take text input and a property menu, open their plugin's panel and draw lines and SVG
pictures; `saveFile` permission with a host-owned save dialog); **`command.batch` named step references** (`as` / `$ref`) and paths in `field`; a
**`window.figcraft` web control channel** (PR #824); branches in live sessions; and the startup
  update prompt with self-update. Commands moved 597 → 616 registration sites in that wave (637 at
  v0.16.0); locales 19 → **24** (+Italian, Korean, Thai draft, Vietnamese, Arabic, Bosnian); plugin
  API 3 → **6**; the `collab.*` set stayed at 21 with branches now working inside live sessions.

## Capabilities (verified)

**Model and editing**
- Frames, groups, sections (section titles draw above contained frames' labels), mask groups,
  rectangles (squircle corners), ellipses with arc/ring handles, polygons, stars, lines (arrowheads
  are stroke caps; end arrowheads survive closed-after-open subpaths), text, vector networks,
  boolean groups, components, sets, instances and slices (`crates/doc/src/node.rs` `NodeKind`,
  `crates/doc/src/props.rs`).
- **Auto layout**: flow, wrap and grid with fixed/hug/`fr` tracks, spans (distribute measures to the
  group's outermost edge), padding, gaps, Hug/Fill/Fixed sizing, min/max sizes, absolute children,
  baseline cross-align, `contentAlign` (`crates/layout/src/lib.rs`, `docs/auto-layout-parity.md`).
- **Vector networks**: Pen/Pencil, vector edit mode (bend, paint bucket, lasso, cut), shape builder,
  editable booleans (stroke-only operand outlines fixed), per-point radius/handles/caps/joins
  (per-point radius scales with `transform.scale`), variable-width strokes, outline stroke
  (stroke rings preserved), dashes (too-fine dashes draw solid instead of exhausting memory), per-side
  strokes, brushes and pen pressure, text on a path (its path scales with `transform.scale`), pattern
  fills, and fill rules with loop reversal for holes (`vector.fillRule`, `vector.reverseLoop`;
  `crates/engine/src/canvas/vectoredit.rs`, `crates/pathops/src/lib.rs`, `crates/engine/src/canvas/shapebuilder.rs` — engine modules re-homed under `content/`, `canvas/` and `sharing/` in v0.13.x).
  **A click with the Bend tool on a sharp point curves it**, placing its handles along the line
  between its neighbours (#1877; `crates/engine/src/canvas/vectoredit/pointer.rs`, test
  `a_bend_click_curves_a_sharp_point_between_its_neighbours` in
  `crates/engine/src/canvas/vectoredit/tests.rs`).
- **Text**: in-place editing, mixed styles (runs stay disjoint across insertions), auto width/height
  (auto height takes max lines into account), truncated text fills its last line and keeps
  truncating when resized, variable font axes, OpenType features, lists, bidi/RTL, HarfRust shaping
  plus system or `craft-fonts` fonts; missing fonts are reported, loadable without install and
  refittable (`text.missingFonts`, `text.loadFont`, `text.refit`; `crates/engine/src/fonts.rs`);
  font discovery covers macOS Adobe Fonts activation, fonts activated by font managers outside the
  font folders, and the installed styles of an embedded family; `FIGCRAFT_DEFAULT_FONT` names the
  font new text starts in; Thai faces and Noto symbol/math fallbacks ship in the fallback list.
  **CJK kinsoku is complete to JIS X 4051**; Backspace removes Thai and other marks one at a time;
  justified text does not widen U+200B. **Wrap style** — `text.wrapStyle {style: auto|balance|pretty}`
  or `node.set {wrapStyle}` — decides where a wrapped layer's lines break: Auto fills each line greedily,
  Balance narrows each paragraph as far as it goes without adding a line, Pretty keeps lines full but
  avoids a lone word on the last (saved line breaks still win; the Type settings control, inspect and
  Dev Mode CSS `text-wrap` show it; per-paragraph settings, text styles and the `.fig` mapping are not
  implemented) (`crates/engine/src/cmd/text.rs`, `docs/ui-parity.md`). `text.fit` shrinks a fixed-width
  text to the largest size that fits `maxLines` (`crates/engine/src/content/textfit.rs`).
- **Paint and effects**: solid and linear/radial/angular/diamond gradients, image fills with
  adjustments (**crop image fills on Cmd/Ctrl resize**; **paste images into selected shapes**;
  magnified images show their pixels), pattern fills, blend modes, inner/drop shadows, uniform and
  progressive layer/background blur, noise, texture, **glass** and masks; glass now takes
  **variables**, bends with the reference tool's thick-lens profile towards the shape's core, puts its
  light on the bevel and splits its colours over 8 dispersion steps, with frost bounded to 0–100 and
  splay turning the bend towards the centre (kept between renders, seam fixed); **LCH and OKLCH models
  in the colour picker**; sRGB or Display P3 with profile conversion
  (`crates/color/src/lib.rs`, `crates/render/src/image_profile.rs`, `crates/render/src/glass.rs`,
  `crates/render/src/backdrop.rs`).
- **Components and design systems**: mains, instances with per-layer overrides, sets and variants,
  properties (boolean/text/instance-swap/slot; strict-mode reserved-word parameters are renamed on
  code export), swap/detach/reset/restore, playground (variant/boolean/text/instance-swap; no slot
  control), paint/text/effect/grid styles, variables (colour/number/string/boolean) with modes,
  aliases, scopes and bindings (each font variable's aliases are followed once when resolving
  missing fonts), JSON/CSS import/export, **variables as Dart constants for Flutter**
  (`crates/doc/src/styles.rs`, `crates/engine/src/cmd/variables_io.rs`, `docs/components-parity.md`).
- **Boards**: `File ▸ New board` / `file.newBoard` opens a light-paged board; `inspect_document`
  says `kind: "board"` and `.figcraft` stores the kind (`crates/doc/src/board.rs` `FileKind`). **21
  `board.*` commands** (set unchanged at v0.16.0): sticky notes (8 soft colours, author line, growing text), shapes, **dot
  grid (`board.grid`)**, connectors (**curved**, re-attachable ends, and `board.addConnected`),
  **`board.reshape`**, stamps, marker/highlighter/eraser strokes,
  labels, text editing, colour/style setters, `board.nextSticky`, **`board.timer`/`board.timerState`
  (timer sessions)**, **`board.vote`/`board.voteResults` (voting sessions)**, **`board.template`/
  `board.templates` (five code-built board templates, `crates/engine/src/boards/board_templates.rs`)**,
  and **`board.table`/`board.tableEdit` (tables)** (`crates/engine/src/boards/`, `docs/mcp.md` ›
  Boards). Board objects are ordinary layers with a `board` field, so rendering, saving, export,
  copy/paste, undo and live sessions work unchanged; proto/Dev Mode refuse on boards.
- **Prototyping**: 10 trigger kinds, 11 actions (incl. overlay open/swap/close — **overlays position
  relative to the layer that opens them** — scroll-to, set variable/mode, conditionals), 8
  transitions, 13 easings/springs, flows, presentation with device frames and live preview; a
  top-level frame taller than the device scrolls through its whole size without an overflow setting
  (`crates/doc/src/proto.rs`, `crates/ui-egui/src/present.rs`, `docs/prototyping-parity.md`).
- **Handoff / Dev Mode**: ready-for-dev status with "Changed" detection and Compare against the
  marked snapshot **or any saved version** (`dev.compare {version}`), annotations, measurements kept
  on the canvas, an inspect-only canvas and read-only layers panel, and generated code for
  **CSS/HTML/React/Vue/Leptos/SwiftUI/Compose/ArkUI plus a React + Tailwind page target and a
  Tailwind theme export, Dart constants for Flutter, and Android Vector Drawable (XML)** — component
  properties become parameters, import lines are included, px→rem keeps full precision, non-ASCII
  layer names transliterate into class names (`crates/engine/src/dev/{codegen.rs,codegen/,tailwind.rs,
  component_codegen.rs}`, `docs/dev-mode-parity.md`).
- **In-file review**: comment threads (replies, @mentions, reactions, resolve), named versions with
  preview/restore/duplicate, branches with update-from-main, review and merge; **branches work in
  live sessions** (`crates/doc/src/comments.rs`, `crates/format/src/lib.rs`,
  `docs/collaboration-parity.md`).
- **Data pipelines**: `data.fill` repeats a frame once per data row, optionally per output size and
  exporting each copy; with `text.fit` it is a carousel/social-post generator in one command
  (`crates/engine/src/content/datafill.rs`, `docs/mcp.md` › Filling copies with data).

**Formats it opens (verified in code)**
- `.figcraft` — native zip, or a bare `document.json` (`crates/format/src/lib.rs`).
- `.json` — FigCraft document JSON, or the Figma REST API file response (`GET /v1/files/:key`), plus
  an optional local-variables JSON and an `images/<imageRef>.*` folder (`crates/format/src/rest`).
- `.fig` — best-effort import of Figma's own file, never overwritten by Save; **large `.fig` files
  keep their layers and their library links**, budgets come from the file's own size, and an import
  report lists what changed and how much of the file it covers (`crates/format/src/fig`).
- **`.sketch` — Sketch 48 and newer import (new this release)** (`crates/engine/src/
  sketch_import_tests.rs`, PR #1021).
- `.svg` — imported as an editable frame; unsupported filters are dropped with a warning
  (`crates/svg`, `docs/file-format-parity.md`).
- Images: `.png`, `.jpg`/`.jpeg`, animated `.gif`, `.webp`, `.bmp`, `.tif`/`.tiff`, with embedded ICC
  profiles honoured; images past 16384 px a side scale down instead of drawing nothing
  (`crates/engine/src/cmd/file.rs`, `crates/render/src/images.rs`).
- PDF is **export-only**; there is no PDF import, no HEIC and no video decode.

**Formats it writes**
- `.figcraft` — native zip: `document.json`, `images/<sha256>`, optional `thumbnail.png`, `versions/`,
  `branches/`, `library/`; staging file plus one atomic rename. Save refuses to overwrite a file
  another app changed or one whose images past the decode budget were not loaded; NaN/infinite
  numbers are written as 0 so the file reopens (`crates/format/src/lib.rs`).
- `.svg`, `.png`, `.jpg`/`.jpeg`, `.webp`, `.pdf` (`crates/doc/src/props.rs`
  `ExportFormat::from_ext`, `apps/figcraft-cli/src/files.rs` `write_doc`).
- `.pdf` — one page per top-level frame, real selectable text, clickable links, bleed/crop marks and
  naive CMYK via `--bleed --crop-marks --bleed-marks --cmyk` (`docs/cli.md`, `crates/pdf`).
- `.fig` — **export files Figma imports, with component set properties** (PR #1152;
  `crates/format/src/fig/export.rs`); written files open elsewhere with layers, paints, strokes,
  shadows, vectors, components, text, resized instances, variables-with-modes, styles,
  variable-width strokes and grid tracks intact; effects, images and prototypes are unchecked there,
  and every omission is a `warning` (`docs/file-format-parity.md` › Export to `.fig`).
- `.json` — FigCraft JSON is written by `figcraft-cli convert`/`run --out`, **not** by the app's
  Save (Save always writes the native archive; `crates/engine/src/cmd/file.rs` `save_to`).

**Automation surfaces (re-measured at this tag)**
- **`figcraft-cli`** — headless engine with **10 subcommands**: `info`, `export`, `convert`, `render`
  (png/jpg/webp), `run` (JSON/JSONL command scripts), `commands`, `mcp`, `plugin publish`,
  `connect publish`, `perf` (`apps/figcraft-cli/src/args.rs` `Cli`/`Command`, `docs/cli.md`). Every subcommand takes
  `--no-system-fonts`; `info`/`export`/`convert`/`render`/`run`/`mcp` also take
  `--automation-read-root` and `--automation-write-root`; `--help`/`-h` is accepted anywhere among
  the options and exits 0; literal dash-prefixed filenames are accepted (`apps/figcraft-cli/src/args.rs`).
- **`command.batch` (new semantics)**: steps can be **named with `as` and referenced with `$ref`**,
  and `field` accepts paths; batch errors **name the failing step**; a failed step still prints
  `"rolledBack": true` and exits 1 having written nothing (`crates/engine/src/cmd/`, `docs/mcp.md`).
- **Control channel** — `figcraft --control <port>`, loopback-only, newline-delimited JSON with
  **17 methods**: `engine.execute`, `engine.commands`, `document.inspect`, `node.get`, `ui.inspect`,
  `ui.pointer`, `ui.key`, `ui.type`, `ui.input`, `ui.menu.invoke`, `ui.set`, `ui.screenshot`,
  `ui.render`, `window.new/list/focus`, `app.quit` (`crates/ui-egui/src/control.rs`,
  `docs/control-protocol.md`). State methods answer while the window is minimised; methods that need
  a drawn frame (`ui.screenshot`, `ui.input`, `window.new`) fail fast (`NEEDS_FRAME`). `ui.set`
  carries `devCompareVersion`. `events.poll` is listed in `docs/control-protocol.md` but only the MCP
  bridge implements it (`crates/mcp/src/headless.rs`); the app's own channel answers `unknown method`.
- **MCP server** — `figcraft-cli mcp` (headless) or `--attach <port>` (drives the running app);
  **19 tools** (set unchanged at v0.16.0): `list_commands`, `run_command`, `batch`, `create_node`, `set_properties`,
  `inspect_document`, `get_node`, `select`, `export`, `screenshot`, `open_file`, `save_file`,
  `undo`, `redo`, `pointer`, `key`, `type_text`, `inspect_ui`, `wait_for_changes`; **3 resources + 2 templates**
  (`figcraft://document`, `figcraft://commands`, `figcraft://comments`, `figcraft://node/{id}`,
  `figcraft://command/{id}`)
  and **4 prompts** (`mobile_screen`, `design_system`, `landing_page`, `prototype_flow`)
  (`crates/mcp/src/tools.rs` `TOOL_NAMES`, `resources.rs`, `prompts.rs`, `docs/mcp.md`). Responses
  are size-bounded — `inspect_document`/`get_node` take `maxBytes` (default 8 MiB) and `get_node` an
  `offset`, returning a `truncated` marker (`crates/mcp/src/tools.rs` `MAX_RESPONSE`, `budget`).
- **Web control channel (new)** — the browser build exposes **`window.figcraft`** so page-level
  tooling can drive the app; Save/Save as/Export arrive as downloads (`apps/figcraft-web/src/query.rs`,
  PR #824, PR #1010).
- **Live sessions from a script** — **21 `collab.*` commands** cover host/join/share/publish, cursors,
  chat and spotlight; **`branch.*` commands work inside live sessions now**; the headless MCP session
  and the attached app can host, join and publish, the one-shot `run` cannot (no network link)
  (`crates/engine/src/sharing/live.rs`, `crates/engine/src/sharing/online.rs`, `docs/mcp.md` › Live sessions); boards sync like any
  document.
- **Plugins** — sandboxed WebAssembly (wasmi, metered fuel, memory cap, no fs/net/clock), manifest
  permissions (**API version 6**; `saveFile` permission with a host-owned save dialog), panels,
  settings and canvas widgets that **take text input, offer a property menu, open their plugin's
  panel and draw lines and SVG pictures**; Rust SDK and
  three examples; `pluginData` written by `node.set` reads back through `node.get`
  (`crates/plugin/src/manifest.rs:11` `API_VERSION: u32 = 6`, `plugins/examples`, `docs/plugins.md`).
- **Templates** — eight code-built design starters (`mobile-app`, `landing-page`, `dashboard`,
  `design-system`, `wireframe-kit`, `social-posts`, `slides`, `icon-set`) via `template.list` and
  `file.newFromTemplate`, plus **five board templates** (`crates/engine/src/content/templates.rs`,
  `crates/engine/src/boards/board_templates.rs`); five example documents in `examples/`.
- **Discovery is a command**: `figcraft-cli commands --json` (or MCP `list_commands`) prints every
  command's id, label, menu path, shortcut, undoability and parameter docs; an unknown command id is
  answered with the nearest real id.

**Platform and runtime facts**
- WebAssembly build: **yes** (`cargo xtask wasm`, `apps/figcraft-web`); the browser build can join but
  not host sessions, keeps one window, has no system fonts and no accessibility tree, and exposes the
  `window.figcraft` control channel. It also has a **host bridge for embedding**: `?host=parent`
  (which wins over `data-host="page"`) lets the page take a parent-provided file, and a Save of a
  host-opened document is handed back under the host's file name; the event names are stable
  (`apps/figcraft-web/src/host.rs`, `hostmode.rs`, `packaging/web/README.md`, `docs/mcp.md`, `docs/hardware-parity.md`).
- **Mobile layout (new)**: phones and portrait tablets get a purpose-built layout (PR #1209).
- Releases package macOS universal, Windows x64/x86/arm64, Linux (AppImage, deb, rpm, Flatpak,
  tarball), FreeBSD and web (`README.md`, `packaging/`); Windows installs per-user by default.
- **Startup update prompt with direct self-updating** (craft-update crate, `Cargo.toml`).
- Crash discipline: no `unwrap`/`expect`/`panic` in shipped code (clippy denies them), a command guard
  rolls a panicking command back, and recovery copies are written every 10 s (`Cargo.toml`,
  `crates/engine/src/guard.rs`, `apps/figcraft/src/recovery.rs` `INTERVAL`).
- Accessibility: AccessKit names/roles on desktop, F6 cycles toolbar → layers → canvas → properties,
  reduced motion honoured (`crates/ui-egui/src/a11y.rs`).
- One process shows several **windows**, each with tabs, panels and canvas; a first run opens the home
  screen (Recents, Online, Templates); dialogs start in the folder of the last file picked
  (`crates/ui-egui/src/windows.rs`, `home.rs`).

## Known limitations and not-implemented

Treat these as hard constraints: **partial** means it exists but is visibly incomplete; the rest are
**not implemented** or **claimed only** (docs assert them, code does not). The v0.12.x line closed
much of the boards gap and added Sketch import, but the file-fidelity gaps remain.

- **Boards are still partial** but far past the first slice: timer, voting, templates, tables, curved
  connectors, re-attachable ends and the dot grid now exist; still missing per `docs/boards-parity.md`:
  sticky size presets/stacks, shape auto-fit and more shapes, stamp wheel, board widgets (beyond the
  new plugin widget capabilities), mind maps, washi tape, code blocks, image cropping on boards,
  audio/huddles, AI features, `.jam` import/export.
- **No real-Figma-file validation.** Every `.fig` corpus in the repo is synthetic; import is "best
  effort" and nothing has been checked against real documents (`docs/gaps.md` 1 and 3) — do not
  promise fidelity. Missing formats: HEIC images and video fills/triggers (no Rust decoder), `.jam`
  (FigJam) and `.deck` (Slides) out of scope (`docs/file-format-parity.md`).
- **No Figma plugin compatibility.** FigCraft runs its own WASM plugins (API 6), not JavaScript Figma
  plugins; widgets now take text input and a property menu but there is still no public plugin
  catalogue, only a self-hosted directory (`docs/gaps.md` 6, `docs/plugins.md`).
- **No AI features at all** and **no spell check** (`docs/gaps.md` 11 and 19).
- **Multiplayer is a preview**: live sessions with sync, cursors, selections, text carets, cursor
  chat, spotlight, per-person undo, join codes and invite links, branches in sessions, plus a
  self-hosted `figcraft-server` (with a per-server key field in the Share popover), but **no accounts
  and no teams**; codes/links are the access and the server stores files unencrypted (`README.md` ›
  Privacy and online sharing).
- **Prototype tail**: no media triggers/actions; controller buttons are read on Windows and in the
  browser but not on macOS, Linux or FreeBSD (`docs/prototyping-parity.md`).
- **Dev Mode tail**: publishing mappings from a code repository and the editor extension are missing;
  the component playground has no slot control (`docs/dev-mode-parity.md`, `docs/gaps.md` 16).
- **CPU canvas, sRGB screen**: Display P3 documents show sRGB-clipped with a gamut warning and
  soft-proof striping (true P3 is blocked upstream in egui-wgpu) (`docs/hardware-parity.md`).
- **Export limits**: SVG and PDF refuse a tree deeper than 256 descendant levels rather than writing
  an incomplete file, and `--cmyk` is the naive `K = 1 − max(R,G,B)` conversion — DeviceCMYK without
  an output intent, so proof against your printer's profile (`docs/file-format-parity.md` › Export,
  `docs/gaps.md` 23).
- **Screen readers have never been run** against the app; the browser build has no accessibility
  tree, and Linux/browser platform QA is still open (`docs/gaps.md` 22 and 8).
- **Localization status is claimed, not verified here**: 24 catalogs are in `crates/ui-egui/locales/`
  (+Italian, Korean, Thai draft, Vietnamese, Arabic and Bosnian); count unchanged at v0.16.0. Review
  status per language is a claim — Polish, French and Swedish had native reviews in an earlier line,
  Georgian earlier still.
- **Bounds worth knowing**: ≤100 versions and ≤100 branches per file; `document.json` is capped by a
  16× compression-ratio rule within 512 MiB per zip member (4 GiB unpacked on 64-bit, 1 GiB on
  32-bit) (`crates/format/src/lib.rs` `MAX_VERSIONS`, `MAX_BRANCHES`, `DOCUMENT_RATIO`, `MAX_MEMBER`).
- **Counts drift, trust code**: `docs/parity-checklist.md` may lag the command registry, README says
  "400+", and `docs/architecture.md` says "two example plugins" where `plugins/examples` holds three.
  This tree has **637** `spec!(` registration sites (488 in the command directory; some ids
  const-built — count your build with `figcraft-cli commands --json`). Uncertain — see
  `docs/gaps.md` for the ranked, self-scored list.

## How to operate

**Launch.** Installed app: `/Applications/FigCraft.app`; `open -a FigCraft [file.figcraft]` opens a
file. The bundle declares the `figcraft` document type, SVG, PNG and JPEG types and the
`figcraft://` URL scheme; identifier `ai.storyteller.figcraft` (`packaging/macos/Info.plist.in`,
`/Applications/FigCraft.app/Contents/Info.plist`). To pass flags, run the binary directly:

```sh
"/Applications/FigCraft.app/Contents/MacOS/FigCraft" --control 7979 WORK/project/app.figcraft
"/Applications/FigCraft.app/Contents/MacOS/FigCraft" --control 7979 \
    --automation-read-root WORK/project --automation-write-root WORK/project/out
```

`--control <port>` starts the loopback JSON-lines control server (or set
`FIGCRAFT_CONTROL_PORT`); `--automation-read-root` / `--automation-write-root` (repeatable) confine
every file the channel and windows may read or write; any unknown option — including a mistyped root
flag — stops the app at startup instead of running unconfined (`apps/figcraft/src/args.rs`,
`apps/figcraft/src/main.rs`, `docs/control-protocol.md`). An invite link (`figcraft://join?…`) or a
`file://` URL on the command line opens or joins it.

**There is no CLI inside the macOS bundle.** The GUI app is the only binary in
`/Applications/FigCraft.app/Contents/MacOS/`. Build it with `cargo build --release -p figcraft-cli` →
`target/release/figcraft-cli`; macOS releases ship a separate `figcraft-cli-<version>-macos-<arch>.zip`
(`packaging/macos/package.sh`). On Linux only, `FigCraft.AppImage cli <args>` runs it (`packaging/linux/AppRun`).

**CLI surface** (verified in `apps/figcraft-cli/src/main.rs`, `docs/cli.md`):

```sh
figcraft-cli info app.figcraft [--json]                 # + missingFonts per file
figcraft-cli export app.figcraft -o exports/ --scale 2  # one file per top-level frame
figcraft-cli export app.figcraft -o hero.svg --node "Hero"
figcraft-cli export app.figcraft -o screens.pdf --page "Screens"
figcraft-cli convert in.svg out.figcraft                # by extension; .sketch and .fig also read
figcraft-cli render app.figcraft -o page.png --scale 2  # png, jpg or webp out
figcraft-cli run build.json --in base.figcraft --out result.figcraft
figcraft-cli commands --filter autoLayout [--json]
```

Every subcommand takes `--no-system-fonts` (or `FIGCRAFT_NO_SYSTEM_FONTS=1`) for reproducible
renders. Exit codes: bad arguments 2, failures 1, success 0 (`--help`/`-h` 0). `--scale` ≤64; pages
shrink to fit 16384 px on `render`; PDF bleed ≤2 in. `export` to a directory writes one file per
top-level frame; an image extension, or `--node`, writes one file. PDF print options
(`--bleed 3mm --crop-marks --bleed-marks --cmyk`) also work.

**Commands validate, they do not coerce.** A fractional `index` in `proto.interaction.remove`/`set`
or `layout.setTrack` is rejected, and invalid `dashes` in `node.set` are an error rather than silently
dropped entries (`crates/engine/src/cmd/proto.rs`, `crates/layout/src/lib.rs`) — pass whole indices and
valid dash arrays, and read the error instead of assuming the edit landed.

**Document model.** One process shows several **windows**, each with its own **tabs**, panels and
canvas (`window.new`); a first run opens the **home screen** (Recents, Online, Templates, search).
Files are documents with pages and per-tab unsaved changes. A `.figcraft` also carries a **kind**:
`design` (default) or `board` (`crates/doc/src/board.rs` `FileKind`). Boards get a bottom toolbar,
no Design panel by default and a contextual bar above the selection, and refuse prototyping/Dev
Mode; design files refuse the `board.*` commands.

**Round trip.** Open (`.figcraft` / `.json` / `.fig` / `.sketch` / `.svg` / image) → edit (UI, CLI
`run`, control channel, MCP) → **Save** (`.figcraft`, atomic staging + rename) → export
(PNG/JPG/SVG/PDF/WebP, or `.fig`). Saving is never in-place over an imported `.fig`; "Save as" with
a `.fig` name writes an export copy and the document keeps its `.figcraft` path
(`crates/engine/src/cmd/file.rs`); `pref.autoSave` also auto-saves files that have a path.

**Keyboard shortcuts**: do not invent them. The machine-readable list is `figcraft-cli commands
--json` (each command's `shortcut`) or MCP `list_commands`, generated from
`crates/engine/src/keymap.rs` — **163 default bindings in 12 groups** (Essential, Tools, View, Zoom,
Text, Shape, Selection, Edit, Transform, Arrange, Components, Prototype) with macOS and, where they
differ, Windows/Linux keys. The board bindings (Q sticky, B shapes, X connector, M marker,
U highlighter, E eraser, W stamp, Shift+Cmd+Enter next sticky) live in the same table
(`docs/ui-parity.md`), which separately tracks **129 documented shortcut rows** (128 bound as
documented; 57 undocumented bindings pinned). The in-app Keyboard shortcuts panel shows the same keymap.

## Working with an AI agent

What an agent can legitimately do:

- **Drive the app headlessly.** `figcraft-cli run` a JSON array (or `.jsonl`) of
  `{"command": id, "params": {…}}`; `{"$step": n}` resolves to the `id` from step `n`'s result, and
  steps can be **named with `as` and referenced with `$ref`** (with paths in `field`), so one script
  builds a whole screen. Scripts are **all-or-nothing and one undo step**; a failed step names itself
  in the error, prints `"rolledBack": true` and exits 1 having written nothing (`apps/figcraft-cli/src/files.rs`).
- **Drive the running app** so the user watches: start it with `--control PORT`, then
  `figcraft-cli mcp --attach PORT` (MCP tools) or speak the JSON-lines protocol directly. Attached
  calls are **never replayed** after a transport failure — inspect before retrying an edit
  (`docs/mcp.md`). In the browser, drive the page through `window.figcraft`.
- **Confine it.** Pass `--automation-read-root` / `--automation-write-root` to the app, `figcraft-cli
  mcp`, or any `info`/`export`/`convert`/`render`/`run` run. Writes need a write root; reads need
  either; `--attach` plus roots is a usage error (`docs/mcp.md` › Confining file access).
- **Prepare inputs.** Generate or convert assets into formats FigCraft reads: SVG (best editable
  import), PNG/JPG/WebP/GIF/TIFF/BMP. For real Figma work the highest-fidelity path is the REST API
  file JSON plus its local-variables JSON plus an `images/<imageRef>.png` folder — the importer reads
  all three (`docs/mcp.md` › Importing REST API file JSON). Sketch 48+ files import directly. PDF is
  export-only.
- **Generate batches.** `data.fill` + `text.fit` turn one frame and a JSON list of rows into a
  carousel or a set of post sizes with the text fitted — no per-copy editing loop
  (`crates/engine/src/content/datafill.rs`, `docs/mcp.md` › Filling copies with data).
- **Inspect and repair native files** (cautiously). A `.figcraft` is a plain zip:
  `unzip -p f.figcraft document.json` reads the whole model, `images/<sha256>` holds raw image bytes,
  and `versions/index.json` / `branches/index.json` hold history. Reading is lenient (structural
  problems are repaired and reported) but a newer format version is refused
  (`FormatError::Newer`). Prefer repairing through commands (`document.inspect`, `node.set`,
  `node.get`); if you must hand-edit, keep `format`/`version` and re-zip the *entire* member set.
- **Hand off code**: pick the Dev Mode target the consumer needs — React, React + Tailwind (page
  code + theme export), Vue, Leptos, SwiftUI, Compose, ArkUI, plain HTML/CSS, Dart constants for
  Flutter, or Android Vector Drawable — and review the generated import lines and transliterated
  class names before shipping (`crates/engine/src/dev/`).
- **Verify output.** `figcraft-cli info <file> --json` for structure, notes and missing fonts;
  re-open an export (`convert` back to `.figcraft`) to prove it decodes; compare a PNG export at a
  known `--scale` against a `ui.render`; for `.fig` output, re-open it in FigCraft and read the
  `warnings` list.
- **Contribute safely**: FigCraft forbids third-party product iconography or images — never add or
  redraw Figma/Adobe assets, and every asset needs a row in `ATTRIBUTION.md` (`AGENTS.md`).

What an agent must **not** do:

- Do not automate the GUI by clicking blind: use the control channel (`ui.pointer`, `ui.key`,
  `ui.input`, `ui.menu.invoke`, `ui.set`) or commands; programmatic calls never open dialogs.
  `ui.screenshot`, `ui.input` and `window.new` need a visible window (`docs/control-protocol.md`).
- Do not assume a Figma format or feature works. No video fills, no HEIC, no `.jam`/`.deck`, no Figma
  plugins, no AI features; `.fig` is best-effort in (now with coverage reporting), Figma-importable
  out, and unproven on real files.
- Do not treat the browser build as equivalent: it can join but not host sessions, keeps one window,
  has no system fonts and no accessibility tree; Display P3 is sRGB-clipped on screen.
- Do not put prototyping or board work in the wrong file kind: `proto.*`/`dev.*` refuse on boards and
  `board.*` refuses on design files (`crates/engine/src/boards/` `NOT_ON_BOARDS`, `NEEDS_BOARD`).
- Do not share to a server uninvited: `collab.share` with `via: "online"` (its default) **publishes
  the document to a server other people run** — only call it when sharing is the request.
- Do not send huge inspection results: MCP responses are capped at 8 MiB by default (`maxBytes`); ask
  for a shallower `depth`, a `get_node` `offset`, or read the document in pieces
  (`crates/mcp/src/tools.rs` `MAX_RESPONSE`).

## Verification protocol

FigCraft is alpha (v0.16.0); treat every automated run as untrusted until checked:

1. **Throwaway round trip per session.** From a template (`file.newFromTemplate`) or a copy: create →
   edit → `save_file`/`--out` to `.figcraft` → reopen → export PNG/PDF. Compare `info` node counts
   before and after; a decoder that only reads what it wrote is how the repo tests `.fig` export.
2. **Never trust a silent export.** Watch stderr: exports and imports print `note:` lines for what was
   dropped, `.fig`/REST/SVG/Sketch imports return `warnings` (and the `.fig` import report states its
   coverage), and a failed SVG/PDF depth check leaves the existing destination intact. Check the exit code.
3. **Version and back up project files.** Ask for the user's document to be committed or copied before
   a batch of automated edits; version history (≤100 versions), branches, auto-save and 10-second
   recovery copies are safety nets, not backups.
4. **Update between projects.** A `.figcraft` written by a newer format version is refused by an older
   one, and a board relies on the `kind` field that older builds do not know — verify the file's kind
   and boards after any downgrade, before trusting a batch run on it.
5. **Scope credentials and sharing.** Live sessions and servers are previews with code/link access and
   no accounts; don't put confidential work on a server you don't run, and the public server keeps the
   file until removed or 30 days unopened (`README.md` › Privacy and online sharing).

## References

- `references/automation-surfaces.md` — command/MCP/control-channel/CLI detail for large jobs: tool and
  method tables, arguments, limits, path confinement, batch semantics (including the `as`/`$ref` step
  references), boards, data-fill, server CLI.

## Sources & evidence

- Repo: https://github.com/storytold/figcraft — inspected at tag **v0.16.0**, commit
  **f45b261687880e56d1bad11ec82b45131e57ef8b** (`git rev-parse HEAD` in the pinned checkout; the tag
  is `v0.16.0`, released 2026-11-06). The installed `/Applications/FigCraft.app` matches the release:
  bundle version 0.16.0, bundle identifier `ai.storyteller.figcraft`, and its binary prints
  `FigCraft 0.16.0 (f45b261687880e56d1bad11ec82b45131e57ef8b)`. Date inspected: **2026-11-07**. The
  GUI was never launched; the bundle was read through `Contents/Info.plist` only, and the macOS
  bundle ships no CLI.
- Delta v0.15.0 → v0.16.0, measured in this tree rather than copied from notes: **133 files changed**
  (+4156/−545) in `git diff v0.15.0..HEAD`; `spec!(` sites **636 → 637** engine-wide and **487 → 488**
  in `crates/engine/src/cmd/`, the single added registration being **`text.wrapStyle`**
  (`crates/engine/src/cmd/text.rs`). Id-set diffs between the two tags are **empty** for MCP
  `TOOL_NAMES`, `board.*`, `collab.*` and the locale directory; CLI `Command` variants, control
  methods and plugin `API_VERSION` are unchanged. The feature delta is glass optics
  (`crates/render/src/glass.rs`, `backdrop.rs`), the Bend tool click (`crates/engine/src/canvas/
  vectoredit/pointer.rs`), the web host bridge (`apps/figcraft-web/src/host.rs`, `hostmode.rs`,
  `packaging/web/README.md`) and stricter command validation in `proto.*`, `layout.setTrack` and
  `node.set`. Prior deltas: v0.14.0 → v0.15.0 (105 files; one CLI verb, MCP tool and control method;
  SVG/`.fig` fidelity) and v0.13.1 → v0.15.0 (FigJam `.jam` boards, `connect publish`, clap-parsed
  CLI). Where the previous skill's figure and the code disagreed the code won: keymap bindings 163
  (not 159), control methods 17 (not 18), `board.*` 21 (not 19), locales 24 (not 22), plugin API 6.
- Key files read: `README.md`, `Cargo.toml`, `ROADMAP.md`, `AGENTS.md`; `crates/doc/src/` (`node.rs`,
  `props.rs`, `proto.rs`, `styles.rs`, `board.rs`, `lib.rs`); `crates/{color,layout}/src/lib.rs`;
  `crates/format/src/{lib,library}.rs` and `crates/format/src/fig/{export,kiwi}.rs`;
  `crates/engine/src/{fonts,keymap,catalog,guard}.rs`, `crates/engine/src/automation/file_access.rs`, `crates/engine/src/sharing/{live,online}.rs`, `crates/engine/src/content/{datafill,textfit}.rs`,
  `crates/engine/src/cmd.rs` (`spec!` macro), `crates/engine/src/{boards,boards/board_templates,
  content/templates}.rs`, `crates/engine/src/dev/{codegen.rs,codegen/{arkui,compose,css,html,swift}.rs,
  tailwind.rs,component_codegen.rs,dev_measurements.rs,devcompare.rs,devinspect.rs}`,
  `crates/engine/src/cmd.rs`, `crates/engine/src/cmd/{file,edit,variables_io,section}.rs`; `apps/figcraft-cli/src/{main,args,files}.rs`;
  `apps/figcraft/src/{main,args,recovery}.rs`; `apps/figcraft-server/src/{cli,config}.rs`;
  `apps/figcraft-web/src/query.rs`; `crates/mcp/src/{tools,resources,prompts,server}.rs`;
  `crates/ui-egui/src/{control,windows,home,a11y,board_bar,present}.rs`;
  `crates/ui-egui/locales/`; `crates/plugin/src/manifest.rs`; `packaging/macos/{Info.plist.in,package.sh}`,
  `packaging/linux/AppRun`; `plugins/examples/`. Added at this tag: `crates/engine/src/cmd/text.rs`
  (`text.wrapStyle`), `crates/render/src/{glass,backdrop}.rs`, `crates/engine/src/canvas/vectoredit/
  pointer.rs`, `crates/engine/src/dev/codegen/html.rs`, `apps/figcraft-web/src/{host,hostmode}.rs`,
  `crates/ui-egui/src/host_save_tests.rs`, `packaging/web/README.md`, `crates/mcp/src/{headless,prompts}.rs`.
- Docs read (counts re-checked against code where stated): `docs/{cli,mcp,control-protocol,file-format-parity,gaps,target-app-parity,boards-parity,dev-mode-parity,prototyping-parity,components-parity,collaboration-parity,localization-parity,hardware-parity,ui-parity,auto-layout-parity,plugins,parity-checklist,architecture}.md`.
- Shared libraries: FigCraft pins its craft-libs crates (incl. `craft-docpath`, `craft-window`,
  `craft-update`) to one revision and patches `krilla` (`Cargo.toml`); the native format is defined
  in this repo, not in craft-libs.