Create model classes with `fromJson` and `toJson` methods using `dart:convert`. Use when manually mapping JSON keys to class properties for simple data structures.
Install
npx skills add flutter/agent-plugins --skill flutter-implement-json-serializationnpx skills add flutter/agent-plugins --skill flutter-implement-json-serialization -a claude-code -gnpx skills add flutter/agent-plugins --skill flutter-implement-json-serialization -a codex -ggemini skills install https://github.com/flutter/agent-plugins.git --path skills/flutter-implement-json-serializationgh skill install flutter/agent-plugins flutter-implement-json-serializationgit clone --depth 1 https://github.com/flutter/agent-plugins /tmp/flutter__agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/flutter__agent-plugins/skills/flutter-implement-json-serialization ~/.claude/skills/flutter-implement-json-serialization # Claude Code
cp -R /tmp/flutter__agent-plugins/skills/flutter-implement-json-serialization ~/.agents/skills/flutter-implement-json-serialization # Codex, Cursor, Gemini CLI, Copilot, OpenCode