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 ariaramin/flutter-skills --skill flutter-video-player-production-engineeringgit clone --depth 1 https://github.com/ariaramin/flutter-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/ariaramin/flutter-skills/flutter-video-player-production-engineering)<a href="https://agentmods.dev/skills/ariaramin/flutter-skills/flutter-video-player-production-engineering"><img src="https://agentmods.dev/badge/skills/ariaramin/flutter-skills/flutter-video-player-production-engineering/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/ariaramin/flutter-skills/flutter-video-player-production-engineering"><img src="https://agentmods.dev/badge/skills/ariaramin/flutter-skills/flutter-video-player-production-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00206 | $0.02047 |
| Opus 5.5 | $0.00082 | $0.00819 |
| Sonnet 5.5 | $0.00041 | $0.00409 |
| Haiku 4.5 | $0.00021 | $0.00205 |
Grade A, and why
flutter-video-player-production-engineering 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 7d 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 — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter video_player Production Engineering
Treat video_player as a thin Flutter controller/widget layer over platform media engines. Codec support, buffering, decoder limits, streaming behavior, autoplay, and many errors belong to Media3/ExoPlayer, AVPlayer, or the browser—not to Dart alone.
Reference routing
Read only what the task needs:
| Need | Reference |
|---|---|
| Current APIs, source constructors, widget/controller lifecycle, source replacement | references/01-api-and-lifecycle.md |
| Support matrix, Android/iOS/macOS backends, codecs, view types, desktop boundaries | references/02-platforms-and-formats.md |
| Network delivery, headers, HLS/DASH, Web autoplay/CORS/range requests | references/03-network-and-web.md |
| Decoder/memory/rendering cost, feeds, preloading, pooling, fullscreen transitions | references/04-performance-and-feeds.md |
| Audio, captions, background playback, PiP, errors, accessibility | references/05-playback-features-and-ux.md |
| Testing, profiling, diagnostics, review checklists, authoritative URLs | references/06-testing-diagnostics-and-sources.md |
The bundled research was checked on 2026-08-11 against video_player 2.13.0, video_player_android 2.12.0, video_player_avfoundation 2.11.0, and video_player_web 2.4.0. Always inspect the project’s pubspec.lock, Flutter/Dart versions, resolved federated implementations, and installed source before relying on a signature or platform behavior.
Inspect before changing code
Inspect:
pubspec.yaml,pubspec.lock, Flutter/Dart constraints, minimum OS versions, and shipped platforms.- Every controller constructor, initializer, listener, owner, replacement path, and
dispose()call. - App lifecycle, route/tab visibility, scrolling visibility, fullscreen flow, and state-management ownership.
- URL delivery: redirects, authentication, expiry, MIME type, range support, CORS, ATS/cleartext policy, HLS/DASH manifests, and CDN logs.
- Media metadata: container, codecs, profile/level, resolution, frame rate, bitrate, rotation, duration, audio tracks, captions, and DRM.
- Simultaneous initialized/playing controllers, texture/platform-view choice, thumbnails, and preload policy.
What ships with it
7 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.
- agents/openai.yaml 257 B
- references/01-api-and-lifecycle.md 5.4 KB
- references/02-platforms-and-formats.md 5.5 KB
- references/03-network-and-web.md 6.1 KB
- references/04-performance-and-feeds.md 6.2 KB
- references/05-playback-features-and-ux.md 6.1 KB
- references/06-testing-diagnostics-and-sources.md 9.8 KB
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.
- 7d ago First seen · 148 lines · 206 tokens per session scan A abb179bf91e7
flutter-video-player-production-engineering is a skill published in the GitHub repository ariaramin/flutter-skills (6 stars, last pushed 7d ago), licensed MIT. It adds 206 tokens to every session and 2,047 once invoked, about $0.0008 per session on Opus 5.5. 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 2026-10-11.
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