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 launch52-ai/flutter-template --skill social-logingit clone --depth 1 https://github.com/launch52-ai/flutter-templateWrote 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/launch52-ai/flutter-template/social-login)<a href="https://agentmods.dev/skills/launch52-ai/flutter-template/social-login"><img src="https://agentmods.dev/badge/skills/launch52-ai/flutter-template/social-login.svg" alt="Measured on agentmods" 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 | $0.00045 | $0.01027 |
| Opus 5 | $0.00023 | $0.00513 |
| Sonnet 5 | $0.00009 | $0.00205 |
| Haiku 4.5 | $0.00005 | $0.00103 |
Grade A, and why
social-login 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 6d 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 — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Social Login - Google & Apple Sign-In
Google and Apple authentication with Supabase or custom backend.
When to Use This Skill
- Adding social login to a project
- Configuring OAuth providers (Google Cloud, Apple Developer)
- Troubleshooting social auth issues
- Adding SHA-1 fingerprints for Android
Reference Files
reference/
├── repositories/ # Domain interface, impl, mocks
├── failures/ # Sealed Failure types
├── providers/ # AuthNotifier social methods
├── utils/ # Nonce helpers, constants
├── widgets/ # Social login button
└── screens/ # OAuth callback (Android)
templates/ # Info.plist, AndroidManifest additions
See: implementation-guide.md for complete file list.
Workflow
Phase 1: Provider Setup
- Google Cloud Console - OAuth clients, SHA-1 (see google-guide.md)
- Apple Developer - App ID, Service ID, Key (see apple-guide.md)
- Supabase - Enable providers (see supabase-guide.md)
Phase 2: Platform Config
- iOS: Add URL schemes to Info.plist, add Sign in with Apple capability
- Android: Add deep link intent filter to AndroidManifest.xml
Phase 3: Implementation
- Copy reference files to project
- Add methods to existing AuthRepositoryImpl
- Add provider methods to AuthNotifier
- Add OAuth callback route
- Run
/i18nfor strings
Core API
// Google Sign-In
final result = await repository.signInWithGoogle();
// Apple Sign-In
final result = await repository.signInWithApple();
// Result contains: userId, email?, displayName?, isNewUser
Failure Types
| Type | When | UI Action |
|---|---|---|
GoogleSignInCancelledFailure |
User dismissed | Silent |
GoogleSignInFailedFailure |
SDK error | Error + retry |
AppleSignInCancelledFailure |
User dismissed | Silent |
AppleSignInFailedFailure |
SDK error | Error + retry |
TokenValidationFailure |
Invalid token | Error + retry |
SocialAuthNetworkFailure |
Connection | Retry button |
What ships with it
20 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.
- apple-guide.md 7.5 KB
- checklist.md 8.1 KB
- google-guide.md 7.2 KB
- implementation-guide.md 8.8 KB
- reference/exceptions/oauth_pending_exception.dart 994 B
- reference/failures/social_auth_failures.dart 6.8 KB
- reference/providers/auth_provider_social_methods.dart 3.2 KB
- reference/repositories/auth_repository_social_methods.dart 5.9 KB
- reference/repositories/mock_auth_social_methods.dart 2.4 KB
- reference/repositories/mock_social_auth_repository.dart 7.1 KB
- reference/repositories/social_auth_repository.dart 1.2 KB
- reference/router/router_oauth_callback.dart 2.0 KB
- reference/screens/oauth_callback_screen.dart 2.8 KB
- reference/utils/app_constants_social.dart 984 B
- reference/utils/nonce_helpers.dart 1.7 KB
- reference/widgets/social_login_button.dart 4.1 KB
- supabase-guide.md 8.3 KB
- templates/android_manifest_additions.xml 1.1 KB
- templates/info_plist_additions.xml 969 B
- templates/Runner.entitlements 730 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.
- 6d ago First seen · 131 lines · 45 tokens per session scan A cd86ca11ec65
social-login is a skill published in the GitHub repository launch52-ai/flutter-template (2 stars, last pushed 6mo ago), licensed MIT. It adds 45 tokens to every session and 1,027 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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