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 fusengine/agents --skill react-i18ngit clone --depth 1 https://github.com/fusengine/agentsWrote 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/fusengine/agents/react-i18n)<a href="https://agentmods.dev/skills/fusengine/agents/react-i18n"><img src="https://agentmods.dev/badge/skills/fusengine/agents/react-i18n/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/fusengine/agents/react-i18n"><img src="https://agentmods.dev/badge/skills/fusengine/agents/react-i18n.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00035 | $0.01546 |
| Opus 5.5 | $0.00014 | $0.00618 |
| Sonnet 5.5 | $0.00007 | $0.00309 |
| Haiku 4.5 | $0.00003 | $0.00155 |
Grade A, and why
react-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 7d 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 — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Also covers React 19 Suspense integration, the Trans component for JSX inside translations, RTL language support, fallback strategies for missing keys, and unit-testing i18n setups. This skill is explicitly for React apps without Next.js — for Next.js App Router i18n use nextjs-i18n, and for Astro use astro-i18n.
react-i18next for React 19
Agent Workflow (MANDATORY)
Before ANY implementation, spawn 3 agents in parallel, one Agent call each with a name:
- fuse-ai-pilot:explore-codebase - Analyze existing i18n setup and translation patterns
- fuse-ai-pilot:research-expert - Verify latest react-i18next/i18next docs via Context7/Exa
- mcp__context7__query-docs - Check TypeScript Selector API and React 19 Suspense patterns
After implementation, run fuse-ai-pilot:sniper for validation.
MANDATORY: SOLID Principles
ALWAYS apply SOLID principles from solid-react skill.
→ See ../solid-react/SKILL.md for complete rules
Key Rules:
- Source files stay within
FUSE_SOLID_MAX_LINESand split by responsibility when cohesion drops - Interfaces in
modules/[feature]/src/interfaces/ - JSDoc mandatory on all exports
- No business logic in components
Core Hooks
| Hook | Purpose | Guide |
|---|---|---|
useTranslation() |
Access translations and i18n instance | references/i18next-basics.md |
useTranslation(ns) |
Load specific namespace | references/namespaces.md |
useTranslation([ns]) |
Load multiple namespaces | references/namespaces.md |
→ See references/i18next-basics.md for detailed usage
What ships with it
21 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.
- references/fallback-strategies.md 2.1 KB
- references/i18next-basics.md 2.6 KB
- references/interpolation.md 2.2 KB
- references/language-detection.md 2.3 KB
- references/lazy-loading.md 2.3 KB
- references/namespaces.md 2.6 KB
- references/pluralization.md 2.4 KB
- references/react-19-integration.md 2.2 KB
- references/rtl-support.md 2.2 KB
- references/templates/basic-setup.md 6.1 KB
- references/templates/date-number-formatter.md 9.5 KB
- references/templates/form-validation-i18n.md 10 KB
- references/templates/language-switcher.md 8.5 KB
- references/templates/lazy-loading-routes.md 9.1 KB
- references/templates/plural-interpolation.md 8.9 KB
- references/templates/testing-i18n.md 11 KB
- references/templates/trans-component-examples.md 9.1 KB
- references/templates/typed-translations.md 7.8 KB
- references/testing.md 2.1 KB
- references/trans-component.md 2.2 KB
- references/typescript-types.md 2.7 KB
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.
- 7d ago Changed 1006dae084af
- 22d ago Changed bb497c71bc33
- 1mo ago Changed 8771daf12c32
- 1mo ago First seen · 175 lines · 35 tokens per session scan A 2ce90c164d2e
react-i18n is a skill published in the GitHub repository fusengine/agents (33 stars, last pushed 7d ago), licensed MIT. It adds 35 tokens to every session and 1,546 once invoked, about $0.0001 per session on Opus 5.5. 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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