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claude-language-coach
Ambient language coaching for Claude Code. Learn languages through your daily coding sessions with contextual grammar corrections, vocabulary suggestions, false friend alerts, pronunciation guidance, and spaced repetition reviews.
How it works
Install the plugin and run /claude-language-coach:setup. The setup writes coaching instructions to your CLAUDE.md (always in Claude's context) and a lightweight hook nudges Claude on every prompt. Result: ambient coaching that fires on every response.
Architecture
The plugin uses a three-layer design for reliable ambient coaching:
CLAUDE.md (always in context) UserPromptSubmit hook (every prompt)
┌─────────────────────────┐ ┌──────────────────────────────┐
│ Config + Instructions │ │ Short nudge: "coaching is │
│ (~80 lines) │ │ active, check for patterns" │
└──────────┬──────────────┘ └──────────────┬───────────────┘
└──────────── Claude sees both ────────────┘
│
┌──────────▼──────────┐
│ Coaching blocks at │
│ end of responses │
└─────────────────────┘
language-coaching skill (500+ lines) ← detailed reference, invoked on demand
- CLAUDE.md carries config + condensed coaching rules. Always loaded into context.
- UserPromptSubmit hook fires a silent nudge on every prompt, reinforcing coaching behavior.
- language-coaching skill holds full schemas, SM-2 algorithm spec, pronunciation tables. Referenced when Claude needs detail.
Skills
| Skill | Type | Description |
|---|---|---|
language-coaching | Reference | Detailed schemas, pronunciation tables, SRS algorithm (invoked on demand) |
/claude-language-coach:lang | On-demand | Full session review of your language usage |
/claude-language-coach:progress | On-demand | Longitudinal progress report with metrics, trends, and insights |
/claude-language-coach:setup | On-demand | Interactive setup — writes config + instructions to CLAUDE.md |
Example
You're working on a feature and write:
"check this latest message, it hasn't any error?"
Claude answers your question normally, then appends:
🇬🇧 English
"it hasn't any error" → "doesn't it have any errors" — In English, have as a main verb needs the do auxiliary for negation: doesn't have. Also, any + countable noun = plural (errors).
Working on a deployment and Claude teaches you the Spanish term:
🇪🇸 Español
desplegar (v.) — deploy · 🔊 "des-ple-GAR"
"Necesitamos desplegar en producción"
📝 Regular -ar verb. Stem change: despliego, despliegas...
A pattern you corrected before comes up for review:
🇬🇧 English · review
💭 didn't work — last corrected 2026-02-20. Recall: after "didn't", use the base form (not past tense)
With immersion mode enabled, Claude translates a phrase from your message into the target language:
🇪🇸 Español · inmersión
💬 "let's close the session for now"
→ "cerremos la sesión por ahora"
🔑 cerrar (verbo) — fechar/encerrar · 🔊 "se-RRAR"
📝 "Cerremos" uses the nosotros subjunctive for "let's..." commands.
Supported languages
| Language | Flag | Template | Pronunciation | Review Format | Traps |
|---|---|---|---|---|---|
| English | 🇬🇧 | ✅ | ✅ 12 mappings | ✅ | ✅ 4 |
| Spanish | 🇪🇸 | ✅ | ✅ 10 mappings | ✅ | ✅ 4 |
| French | 🇫🇷 | ✅ | ✅ 12 mappings | ✅ | ✅ 5 |
| Italian | 🇮🇹 | ✅ | ✅ 14 mappings | ✅ | ✅ 5 |
| German | 🇩🇪 | ✅ | ✅ 15 mappings | ✅ | ✅ 5 |
| Japanese | 🇯🇵 | ✅ | ✅ 9 mappings | ✅ | ✅ 5 |
| Korean | 🇰🇷 | ✅ | ✅ 11 mappings | ✅ | ✅ 5 |
| Dutch | 🇳🇱 | ✅ | ✅ 13 mappings | ✅ | ✅ 6 |
All pronunciation tables are generated relative to the user's configured native_language. The counts above show pt-BR reference mappings; the system adapts to any native language.
Installation
As a plugin (recommended)
/plugin marketplace add remenoscodes/claude-plugin-marketplace
/plugin install claude-language-coach
Then run the setup to activate ambient coaching:
