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 j4flmao/agent-skills --skill internationalizationgit clone --depth 1 https://github.com/j4flmao/agent-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/j4flmao/agent-skills/internationalization)<a href="https://agentmods.dev/skills/j4flmao/agent-skills/internationalization"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/internationalization/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/j4flmao/agent-skills/internationalization"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/internationalization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 149 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 297 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 303 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 305 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00086 | $0.06712 |
| Opus 5 | $0.00043 | $0.03356 |
| Sonnet 5 | $0.00017 | $0.01342 |
| Haiku 4.5 | $0.00009 | $0.00671 |
Grade A, and why
backend-internationalization 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 5d 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 — 617 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Internationalization
Purpose
Design i18n architecture with locale selection, translation workflow, and message formatting.
Agent Protocol
Trigger
Exact user phrases: "i18n", "internationalization", "localization", "l10n", "translation", "multi-language", "locale", "language support", "translation file", "gettext", "message format", "ICU message", "pluralization", "RTL support".
Input Context
Before activating, verify:
- Initial languages to support and priority order
- Translation workflow (in-house translators, vendor, Crowdin/Lokalise)
- Content types needing translation (API messages, emails, push notifications, error messages)
- Who provides translations (developers, product team, translation service)
Output Artifact
Internationalization architecture design as formatted text.
Response Format
# Locale configuration with fallback chains
# Translation file structure
// Message formatting code
// Locale detection and negotiation
No preamble. No postamble. No explanations. No filler/hedging/transitions. Compress output — why use many token when few do trick.
Completion Criteria
- Locale selection with BCP 47 tags and fallback chains
- Message storage with ICU MessageFormat and key naming convention
- Translation workflow defined (extract → translate → import → validate)
- API message delivery with Accept-Language parsing and Content-Language header
- Server-side locale-aware formatting (date, number, currency, timezone)
- RTL support with dir attribute and bidirectional text handling
Max Response Length
200 lines of configuration and code.
Decision Tree
Which Library?
What tech stack and i18n needs?
├── Node.js, need ICU support, flexible
│ └── i18next (most popular, rich ecosystem)
├── React, need ICU, date/number formatting
│ └── FormatJS / react-intl (ICU native, Intl API integration)
├── Python / Django
│ └── Babel + gettext (PO files, Django integration)
├── Python, need ICU
│ └── Babel with babel-icu extension
├── Go
│ └── go-i18n (ICU-like, YAML/TOML/JSON)
└── Java / Spring
└── ResourceBundle + ICU4J (standard Java i18n)
What ships with it
8 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.
- 5d ago First seen · 617 lines · 86 tokens per session scan A c20d654f21dd
backend-internationalization is a skill published in the GitHub repository j4flmao/agent-skills (22 stars, last pushed 2d ago), licensed MIT. It adds 86 tokens to every session and 6,712 once invoked, about $0.0004 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 2026-09-03.
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