i18n-checker

i18n-checker is an agent for Claude Code from berrzebb/quorum. It costs 43 tokens per session (405 once invoked), scanned A, original, MIT.

An internationalization checker for finding missing translations and hardcoded user-facing text in multilingual software. Internationalization, or i18n, prepares an application to support multiple languages.

In plain words
What is it for?
It helps validate locale files, map source code, detect language-specific hardcoded strings, and add a missing translation key to two language files at once.
Why use it?
It helps prevent languages from becoming inconsistent and avoids shipping text that cannot be translated or detected correctly.

Agent for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; mentions Claude Code.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the quorum plugin — 10 commands, 13 agents shipped together

Good fit It helps validate locale files, map source code, detect language-specific hardcoded strings, and add a missing translation key to two language files at once.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add berrzebb/quorum
Claude Code
/plugin install quorum

Made for: Claude Code.

Or install quorum, the plugin that ships this one along with the rest of its 10 commands, 13 agents.

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 i18n-checker

README.md
[![agentmods](https://agentmods.dev/badge/agents/berrzebb/quorum/i18n-checker.svg)](https://agentmods.dev/agents/berrzebb/quorum/i18n-checker)
Your own site
<a href="https://agentmods.dev/agents/berrzebb/quorum/i18n-checker"><img src="https://agentmods.dev/badge/agents/berrzebb/quorum/i18n-checker.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 405 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00043 $0.00405
Opus 5 $0.00022 $0.00202
Sonnet 5 $0.00009 $0.00081
Haiku 4.5 $0.00004 $0.00040

Measured 8d ago against content hash 647c722d7d91, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

i18n-checker 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 8d 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.

platform/adapters/claude-code/agents/i18n-checker.md · 41 lines

What it actually says

i18n Checker (Claude Code)

Read and follow:

  • Base protocol: ${CLAUDE_PLUGIN_ROOT}/../../../agents/knowledge/specialist-base.md
  • Domain knowledge: ${CLAUDE_PLUGIN_ROOT}/../../../agents/knowledge/domains/i18n.md

Claude Code Tool Invocation

node "${CLAUDE_PLUGIN_ROOT}/../../core/tools/tool-runner.mjs" i18n_validate --path locales/
node "${CLAUDE_PLUGIN_ROOT}/../../core/tools/tool-runner.mjs" code_map --path src/
# Add missing key to both locale files at once
node "${CLAUDE_PLUGIN_ROOT}/../../core/tools/add-locale-key.mjs" "key" "ko_value" "en_value"

Language-Aware Hardcoded String Detection

JSX hardcoded string patterns are defined per language in languages/{lang}/spec.mjsi18nHardcodedRe. The i18n_validate tool checks JSX extensions (jsxExtensions from spec) automatically.

Domain-Specific Anti-Patterns

  • Do NOT flag technical strings (CSS classes, HTML attributes, log messages)
  • Do NOT flag test fixtures or mock data for i18n
  • Do NOT require i18n for developer-facing error messages
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. 8d ago First seen · 41 lines · 43 tokens per session scan A 647c722d7d91

Subscribe to this mod's changes

i18n-checker is an agent published in the GitHub repository berrzebb/quorum (10 stars, last pushed 4mo ago), licensed MIT. It adds 43 tokens to every session and 405 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 2026-08-31.