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 iuliandita/skills --skill i18n-localizationgit clone --depth 1 https://github.com/iuliandita/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/iuliandita/skills/i18n-localization)<a href="https://agentmods.dev/skills/iuliandita/skills/i18n-localization"><img src="https://agentmods.dev/badge/skills/iuliandita/skills/i18n-localization/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/iuliandita/skills/i18n-localization"><img src="https://agentmods.dev/badge/skills/iuliandita/skills/i18n-localization.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 | $0.00030 | $0.05517 |
| Opus 5.5 | $0.00012 | $0.02207 |
| Sonnet 5.5 | $0.00006 | $0.01103 |
| Haiku 4.5 | $0.00003 | $0.00552 |
Grade A, and why
i18n-localization 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 14d 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.
This is a copy
88% identical to localize — 425 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 430 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Internationalization and Localization
Systematic approach to internationalizing applications. Covers two scenarios: adding multilingual support from scratch and auditing existing i18n for gaps.
Built from real production pain - the hardest part of i18n is not translation but finding every string that needs it, and making sure translations read naturally in context rather than as mechanical word-by-word output.
Target versions (October 2026): react-i18next 17.0.15, vue-i18n 11.4.13, next-intl 4.14.9,
i18next 26.4.2. Missing-key persistence: i18next-http-middleware 3.9.9 and
i18next-fs-backend 2.6.8 (npm latest on 2026-10-02). Require at least the following verified security fixes: critical missing-key prototype-pollution
fixes first shipped in middleware 3.9.7 (CVE-2026-48714, affected <3.9.7)
and filesystem backend 2.6.6 (CVE-2026-48713, affected <2.6.6).
Later high-severity prototype-pollution fixes raise the floors to middleware 3.9.9
(GHSA-r4j4-5cw9-pwgj, affected <=3.9.8)
and filesystem backend 2.6.8 (GHSA-cchx-rhgv-92hj, affected <=2.6.7).
Do not expose missing-key persistence to untrusted users; disable saveMissing where unnecessary.
Advisory ranges checked 2026-10-02.
When to use
- Adding multilingual support to an existing single-language app
- Auditing a codebase for untranslated hardcoded strings
- Checking an already-internationalized app for completeness or quality gaps
- Setting up locale catalogs, providers, and translation infrastructure
- Generating machine translations for new or changed source strings
- Validating catalog completeness across locales
- Adding new languages to an already-internationalized app
- Reviewing translation quality (voice consistency, domain accuracy, placeholder integrity)
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.
- 14d ago Changed · -16 lines b6508746b0f9
- 15d ago Changed dde8fca0612a
- 27d ago First seen · 446 lines · 30 tokens per session scan A 3d7f339cc8d1
i18n-localization is a skill published in the GitHub repository iuliandita/skills (7 stars, last pushed 3d ago), licensed MIT. It adds 30 tokens to every session and 5,517 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to localize, differing in 425 lines, and is treated as a copy.
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