Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add RandalSchwartz/dart-sdk-skills --skill flutter-sdk-changeloggit clone --depth 1 https://github.com/RandalSchwartz/dart-sdk-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/randalschwartz/dart-sdk-skills/flutter-sdk-changelog)<a href="https://agentmods.dev/skills/randalschwartz/dart-sdk-skills/flutter-sdk-changelog"><img src="https://agentmods.dev/badge/skills/randalschwartz/dart-sdk-skills/flutter-sdk-changelog/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/randalschwartz/dart-sdk-skills/flutter-sdk-changelog"><img src="https://agentmods.dev/badge/skills/randalschwartz/dart-sdk-skills/flutter-sdk-changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00186 | $0.02024 |
| Opus 5 | $0.00093 | $0.01012 |
| Sonnet 5 | $0.00037 | $0.00405 |
| Haiku 4.5 | $0.00019 | $0.00202 |
Grade A, and why
flutter-sdk-changelog scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter SDK Changelog & Widget Migration Guide (Flutter 1.0 to Modern Flutter)
This skill provides an authoritative, structured reference for Flutter framework releases, widget deprecations, API replacements, Material 3 design migrations, the decoupling of standalone material_ui and cupertino_ui packages, and legacy Flutter codebase rescue runbooks.
🎯 Fast Flutter Widget & API Replacement Matrix
| Deprecated / Obsolete API | Introduced / Deprecated In | Modern Replacement | Reference |
|---|---|---|---|
Color.withOpacity(o) |
Deprecated in Flutter 3.22 | Color.withValues(alpha: o) |
Widget Deprecations |
MaterialState / MaterialStateProperty |
Deprecated in Flutter 3.22 | WidgetState / WidgetStateProperty |
Widget Deprecations |
WillPopScope |
Deprecated in Flutter 3.12+ | PopScope(canPop: ..., onPopInvokedWithResult: ...) |
Widget Deprecations |
FlatButton, RaisedButton, OutlineButton |
Deprecated in Flutter 2.0 | TextButton, ElevatedButton, OutlinedButton |
Widget Deprecations |
TextTheme.headline1...6, bodyText1/2 |
Deprecated in Flutter 3.7+ | displayLarge...small, bodyLarge/Medium |
Widget Deprecations |
ThemeData.accentColor |
Deprecated in Flutter 2.5+ | ColorScheme.secondary |
Widget Deprecations |
Scaffold.of(context).showSnackBar() |
Deprecated in Flutter 2.0 | ScaffoldMessenger.of(context).showSnackBar() |
Widget Deprecations |
package:flutter/material.dart |
Monolithic Flutter SDK | package:material_ui/material_ui.dart |
Material & Cupertino Migration |
package:flutter/cupertino.dart |
Monolithic Flutter SDK | package:cupertino_ui/cupertino_ui.dart |
Material & Cupertino Migration |
BottomNavigationBar |
Legacy M2 Navigation | NavigationBar (Material 3) |
Material 3 Guide |
ToggleButtons |
Legacy M2 Toggle | SegmentedButton<T> (Material 3) |
Material 3 Guide |
PopupMenuButton |
Legacy popup menu | MenuAnchor / SubmenuButton |
Material 3 Guide |
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago Changed · +15 lines · +67 tokens per session fa5f7a6bb2bc
- 12d ago First seen · 84 lines · 119 tokens per session scan A 48149478a026
flutter-sdk-changelog is a skill published in the GitHub repository RandalSchwartz/dart-sdk-skills (29 stars, last pushed 10d ago), licensed MIT. It adds 186 tokens to every session and 2,024 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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