english-mode

english-mode is a skill for Claude Code, Codex from ahonn/dotfiles. It costs 30 tokens per session (330 once invoked), scanned A, original, MIT.

A switch for an English-only project mode that rejects non-English input and adds grammar and usage feedback to responses.

In plain words
What is it for?
Use it to turn English-only input on or off and receive grammar feedback at the end of responses.
Why use it?
It helps keep project communication and generated text in English while making language mistakes easier to notice.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/ahonn/dotfiles/english-mode
Any agent
npx skills add ahonn/dotfiles --skill english-mode
Clone the repo
git clone --depth 1 https://github.com/ahonn/dotfiles

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for english-mode

README.md
[![agentmods](https://agentmods.dev/badge/skills/ahonn/dotfiles/english-mode.svg)](https://agentmods.dev/skills/ahonn/dotfiles/english-mode)
Your own site
<a href="https://agentmods.dev/skills/ahonn/dotfiles/english-mode"><img src="https://agentmods.dev/badge/skills/ahonn/dotfiles/english-mode.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 330 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00030 $0.00330
Opus 5 $0.00015 $0.00165
Sonnet 5 $0.00006 $0.00066
Haiku 4.5 $0.00003 $0.00033

Measured yesterday against content hash 2eac4096b75e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

english-mode 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 yesterday.

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.

.claude/skills/english-mode/SKILL.md · 33 lines

What it actually says

English Mode Toggle

Toggle English-only mode for the current project. When enabled:

  • Non-English input is blocked — you must rewrite in English
  • Grammar and usage feedback appears at the end of each response

Check current state

!jq -r '.["english-mode"] // false' "$CLAUDE_PROJECT_DIR/.claude/features.json" 2>/dev/null || echo "false"

Instructions

Based on "$ARGUMENTS" and the current state above:

  • If argument is "on" → enable
  • If argument is "off" → disable
  • If no argument → toggle (flip current state)

To enable: ensure $CLAUDE_PROJECT_DIR/.claude/features.json exists and has "english-mode": true. Use jq to merge the key without overwriting other keys. Create the file if it doesn't exist.

To disable: set "english-mode": false in the same file. If the file has no other truthy keys, you may delete it.

After toggling, report the new state concisely:

  • Enabled: "English mode on for this project. All input must be in English. Grammar feedback will appear at the end of responses."
  • Disabled: "English mode off for this project."
Changes

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.

  1. yesterday First seen · 33 lines · 30 tokens per session scan A 2eac4096b75e

Subscribe to this mod's changes

english-mode is a skill published in the GitHub repository ahonn/dotfiles (62 stars, last pushed 4d ago), licensed MIT. It adds 30 tokens to every session and 330 once invoked, about $0.0002 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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