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 agentmods add skills/launch52-ai/flutter-template/push-notificationsnpx skills add launch52-ai/flutter-template --skill push-notificationsgit clone --depth 1 https://github.com/launch52-ai/flutter-templateWhat 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 | $0.00044 | $0.01095 |
| Opus 5 | $0.00022 | $0.00548 |
| Sonnet 5 | $0.00009 | $0.00219 |
| Haiku 4.5 | $0.00004 | $0.00110 |
Grade A, and why
push-notifications 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 2d 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 — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Push Notifications - Firebase Cloud Messaging
Push notifications with FCM for iOS and Android. Handles foreground, background, and terminated app states.
When to Use This Skill
- Adding push notifications to a Flutter app
- Configuring Firebase Cloud Messaging
- Setting up APNs for iOS
- Implementing deep linking from notifications
- User asks "add push notifications", "FCM setup", or "notification handling"
Questions to Ask
- Firebase project: Is Firebase already configured, or need to set up from scratch?
- Notification types: Marketing notifications only, or also transactional (in-app events)?
- Deep linking: Should notifications open specific screens?
- Topics: Need topic-based subscriptions (e.g., "news", "promotions")?
- Local notifications: Need scheduled/local notifications (non-push)?
Reference Files
reference/
├── models/ # Notification payload (Freezed)
├── services/ # FCM initialization, handlers
├── repositories/ # Domain interface + impl + mock
├── providers/ # Riverpod notifiers + state
└── failures/ # Sealed Failure types
templates/ios/ # Info.plist additions
templates/android/ # AndroidManifest, build.gradle
See: implementation-guide.md for complete setup.
Workflow
Phase 1: Firebase Setup
- Create Firebase project (if needed)
- Add iOS app with APNs key (see firebase-setup-guide.md)
- Add Android app with SHA-1 fingerprints
- Download config files (GoogleService-Info.plist, google-services.json)
Phase 2: Platform Config
- iOS: Add Push Notification capability, Background Modes
- Android: Add FCM dependencies and manifest entries
- Add config files to project
Phase 3: Implementation
- Copy reference files to project
- Initialize FCM in main.dart
- Implement token registration with backend
- Add notification handlers (foreground/background/terminated)
- Configure deep linking (optional)
Core API
What ships with it
14 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.
- checklist.md 3.4 KB
- firebase-setup-guide.md 6.2 KB
- implementation-guide.md 9.8 KB
- reference/failures/push_notification_failures.dart 4.1 KB
- reference/models/push_notification_payload.dart 2.8 KB
- reference/providers/push_notification_providers.dart 7.1 KB
- reference/repositories/mock_push_notification_repository.dart 3.2 KB
- reference/repositories/push_notification_repository_impl.dart 5.2 KB
- reference/repositories/push_notification_repository.dart 1.7 KB
- reference/services/push_notification_service.dart 7.4 KB
- reference/utils/permission_utils.dart 2.5 KB
- templates/android/android_manifest_additions.xml 1.9 KB
- templates/android/build_gradle_additions.gradle 2.1 KB
- templates/ios/info_plist_additions.xml 633 B
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.
- 2d ago First seen · 140 lines · 44 tokens per session scan A 0a8c710f6a3a
push-notifications is a skill published in the GitHub repository launch52-ai/flutter-template (2 stars, last pushed 6mo ago), licensed MIT. It adds 44 tokens to every session and 1,095 once invoked, about $0.0002 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 2026-08-31.
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