The Fresh, Minimal Flutter UI kit.
$flutter pub add fossuiFrequently asked questions
Build Flutter UI faster. If you don't find what you need here, reach us at .
No wrapper lock-in. FossTheme drops into any app, and context.fossTheme resolves identically under MaterialApp, CupertinoApp, or a bare WidgetsApp.
30+ components today: every core form control (Button, Text Field, Select, Combobox, Date Picker), overlays (Dialog, Drawer, Toast), and layout primitives (Card, Tabs, Accordion), all themed from one source. Full list at fossui.org/roadmap.
One runtime dependency, around 384 KB with every component used. Pure Dart, no native code, no bundled icon package.
Yes. Coding agents get the exact fossui API through the MCP server at mcp.fossui.org, a skill, or a rules snippet, so they write correct, on-theme code the first try instead of guessing.
Yes. Install it with npx skills add fossui/ai, not just for Claude Code, it installs across many AI coding agents. It carries the same idioms as the MCP server so AI-written fossui code compiles and stays on-theme on the first try.