i18n-patterns

Implements internationalization with Rails I18n for multi-language support. Use when adding translations, managing locales, localizing dates/currencies, pluralization, or when user mentions i18n, translations, locales, or multi-language.

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npx tessl i github:ThibautBaissac/rails_ai_agents --skill i18n-patterns

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Review — 82%

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Evaluation — 100%

Agent success when using this skill

Validation — 9 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

100%

40%

Adding Multi-Language Support to a Products Feature

Locale file structure and view lazy lookups

Criteria

Without context

With context

Views locale in views/

100%

Models locale in models/

100%

Nested YAML keys

100%

No flat keys

100%

Lazy lookup in view

100%

_html suffix for HTML

100%

Interpolation not concatenation

100%

Controller lazy lookup

100%

ActiveRecord model structure

100%

Validation error translation

100%

French locale provided

100%

Without context: $0.2260 · 40s · 12 turns · 13 in / 2,562 out tokens

With context: $0.6061 · 1m 32s · 32 turns · 330 in / 5,716 out tokens

100%

20%

Implementing Multi-Language Routing for a SaaS Dashboard

URL-based locale switching and i18n configuration

Criteria

Without context

With context

Route scope for locale

100%

around_action :switch_locale

100%

I18n.with_locale usage

100%

default_url_options

100%

User preference chain

100%

Accept-Language extraction

100%

Fallbacks enabled

100%

Available locales configured

100%

Default locale configured

100%

i18n-tasks in development

100%

URL-based locale fallback

100%

Without context: $0.2227 · 44s · 12 turns · 13 in / 2,593 out tokens

With context: $0.3676 · 1m 1s · 17 turns · 66 in / 3,178 out tokens

100%

Localized Booking Summary for an Event Management Platform

Pluralization, date/currency formatting, and i18n testing

Criteria

Without context

With context

Pluralization zero/one/other

100%

French pluralization

100%

count: interpolation in t()

100%

I18n.l for date

100%

Named date formats defined

100%

Currency locale formatting

100%

French currency locale config

100%

Nil date handling

100%

i18n RSpec spec with BaseTask

100%

Missing translation raises in tests

100%

require i18n/tasks

100%

Exception handler restored

100%

Without context: $0.5075 · 1m 42s · 23 turns · 23 in / 7,199 out tokens

With context: $0.5773 · 1m 34s · 24 turns · 73 in / 6,068 out tokens

Evaluated: about 6 hours ago
Agent: Claude Code

Table of Contents

Adding Multi-Language Support to a Products Feature Implementing Multi-Language Routing for a SaaS Dashboard Localized Booking Summary for an Event Management Platform

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