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/i18nnpx skills add launch52-ai/flutter-template --skill i18ngit 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/i18n)<a href="https://agentmods.dev/skills/launch52-ai/flutter-template/i18n"><img src="https://agentmods.dev/badge/skills/launch52-ai/flutter-template/i18n.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 | $0.00057 | $0.00796 |
| Opus 5 | $0.00028 | $0.00398 |
| Sonnet 5 | $0.00011 | $0.00159 |
| Haiku 4.5 | $0.00006 | $0.00080 |
Grade A, and why
i18n 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 4d 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 — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
i18n - Localization & UX Writing
Ensure all user-facing text is localized and crystal clear. Every string should be understandable by a 10-year-old or non-native English speaker.
When to Use This Skill
- Checking for hardcoded strings
- Writing or improving user-facing text
- Creating error messages, button labels, confirmations
- Migrating strings to i18n files
- Reviewing string quality
Quick Reference
The Golden Rules
- Be specific, not vague - "Could not save photo" not "Error occurred"
- Use plain words - "Sign in" not "Authenticate"
- Buttons complete "I want to ___" - "Delete photo" not "OK"
- Errors say what to do - "Check your connection and try again"
- No confusing dialogs - Never [Cancel] [OK] on a cancel confirmation
File Structure
lib/
├── core/i18n/
│ ├── common.i18n.yaml → t.common.*
│ └── translations.g.dart → Generated
└── features/{feature}/i18n/
└── {feature}.i18n.yaml → t.{feature}.*
Commands
# Audit for hardcoded strings
dart run .claude/skills/i18n/scripts/check.dart --audit
# Audit specific feature
dart run .claude/skills/i18n/scripts/check.dart --audit auth
# Generate missing i18n files
dart run .claude/skills/i18n/scripts/check.dart --generate
# Regenerate translations
dart run build_runner build --delete-conflicting-outputs
Workflow
1. Audit
dart run .claude/skills/i18n/scripts/check.dart --audit {feature}
Look for: Text('...'), title:, hintText:, label:, SnackBar messages, Dialog content.
2. Evaluate & Improve
Check each string against ux-writing-guide.md. Use patterns from examples.md.
3. Add to i18n File
Create/update lib/features/{feature}/i18n/{feature}.i18n.yaml with proper strings.
4. Replace in Code
// Before: Text('Welcome back')
// After: Text(t.auth.login.title)
5. Regenerate
dart run build_runner build --delete-conflicting-outputs
What ships with it
4 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.
- 4d ago First seen · 107 lines · 57 tokens per session scan A 49f126252062
i18n is a skill published in the GitHub repository launch52-ai/flutter-template (2 stars, last pushed 6mo ago), licensed MIT. It adds 57 tokens to every session and 796 once invoked, about $0.0003 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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