agentmods.dev

skills-x: Skill for Codex

.codex/skills/go-i18n/SKILL.md

go-i18n is a skill for Codex from castle-x/skills-x. It costs 34 tokens per session (804 once invoked), scanned A, original, MIT.

A guide for adding and maintaining translations in a Go command-line program. It explains how the program chooses a language and how translation keys and locale files work.

In plain words
What is it for?
Use it when editing user-facing CLI messages, adding skill descriptions, updating English or Chinese locale files, or debugging language selection.
Why use it?
It prevents missing, inconsistent, or incorrectly selected translations in command-line output.

Skill for Codex

Written for Codex: installed under .codex/.

This is castle-x/skills-x's own configuration. It tells Codex how to work on skills-x itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything skills-x configures →

not rated 18repo 4mo ago A scan 34 tokens original MIT
View source ↗ castle-x/skills-x
Reuse

Borrowing it

Nothing to install: this file belongs to castle-x/skills-x. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/castle-x/skills-x/main/.codex/skills/go-i18n/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/castle-x/skills-x

Made for: 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 go-i18n

README.md
[![agentmods](https://agentmods.dev/badge/skills/castle-x/skills-x/go-i18n/github.svg)](https://agentmods.dev/skills/castle-x/skills-x/go-i18n)
Your own site
<a href="https://agentmods.dev/skills/castle-x/skills-x/go-i18n"><img src="https://agentmods.dev/badge/skills/castle-x/skills-x/go-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.

agentmods 80×15 button for go-i18n

Your own site · 80×15
<a href="https://agentmods.dev/skills/castle-x/skills-x/go-i18n"><img src="https://agentmods.dev/badge/skills/castle-x/skills-x/go-i18n.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 804 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 $0.00034 $0.00804
Opus 5 $0.00017 $0.00402
Sonnet 5 $0.00007 $0.00161
Haiku 4.5 $0.00003 $0.00080

Measured 12d ago against content hash ce0e1c2e08fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

go-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 12d 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.

.codex/skills/go-i18n/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Go CLI i18n

Overview

This skill documents the Go CLI i18n rules used in this repo, including language detection, locale files, and key naming conventions.

When to Use

  • You add or edit any user-facing CLI string in cmd/skills-x
  • You need to add a new skill description for list output
  • You are troubleshooting mixed language output or missing translations

Architecture Snapshot

  • i18n runtime: cmd/skills-x/i18n/i18n.go
  • Locale files: cmd/skills-x/i18n/locales/zh.yaml, cmd/skills-x/i18n/locales/en.yaml
  • Embed: //go:embed locales/*.yaml (locales are embedded at build time)

Language Selection

Priority order in detectLanguage():

  1. SKILLS_LANG
  2. LANG
  3. LC_ALL
  4. Default: zh

Normalization uses prefix matching:

  • zh, zh_CN, zh_TW → zh
  • en, en_US → en
  • Unsupported → zh

Using i18n in Go

Initialize once (early in main):

import "github.com/castle-x/skills-x/cmd/skills-x/i18n"

i18n.MustInit()

Translate strings:

title := i18n.T("list_header")
msg := i18n.Tf("init_success", skillName)

Missing keys return the key itself (useful for spotting gaps).

Key Naming Conventions

Use lowercase + underscores with category prefixes:

  • app_ app metadata
  • cmd_ command descriptions/flags
  • list_ list output
  • init_ init output
  • err_ error messages
  • cat_ category names
  • skill_ skill descriptions
  • meta_ meta warnings

Rule: Never mix Chinese and English in the same string. Use two locale keys instead.

Adding New Strings

  1. Add the same key to both locale files:
    • cmd/skills-x/i18n/locales/zh.yaml
    • cmd/skills-x/i18n/locales/en.yaml
  2. Use i18n.T / i18n.Tf in Go code.
  3. Rebuild (make build) to embed the updated YAML.
  4. Test:
    • SKILLS_LANG=zh ./bin/skills-x list
    • SKILLS_LANG=en ./bin/skills-x list

New Skill Description

Add a skill_<skill-name> key to both locale files. The list view reads descriptions from i18n, not from the skill file.

Read the full file on GitHub · 116 lines

Files

What ships with it

3 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.

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. 12d ago First seen · 116 lines · 34 tokens per session scan A ce0e1c2e08fb

Subscribe to this mod's changes

go-i18n is a skill published in the GitHub repository castle-x/skills-x (18 stars, last pushed 4mo ago), licensed MIT. It adds 34 tokens to every session and 804 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 2026-08-30.

GoLanguagesLocalization
Related

Other skills, from other repositories

golang-testing

Go testing best practices including table-driven tests, test helpers, benchmarking, race detection, coverage analysis, and integration testing patterns. Use when writing or improving Go tests.

affaan-m/ECC · 37 tokens

golang-patterns

Go-specific design patterns and best practices including functional options, small interfaces, dependency injection, concurrency patterns, error handling, and package organization. Use when working with Go code to apply idiomatic Go patterns.

affaan-m/ECC · 45 tokens

ast-grep

Guide for writing ast-grep rules to perform structural code search and analysis. Use when users need to search codebases using Abstract Syntax Tree (AST) patterns, find specific code structures, or perform complex code queries that go beyond simple text search. This skill should be used when users ask to search for…

JanDeDobbeleer/oh-my-posh · 80 tokens

golang-testing

Production-ready Golang tests — table-driven tests, testify suites and mocks, parallel tests, fuzzing, fixtures, goroutine leak detection with goleak, snapshot testing, code coverage, integration tests, idiomatic test naming. Use when writing or reviewing Go tests, choosing a testing approach, setting up Go test CI…

samber/cc-skills-golang · 115 tokens

golang-samber-oops

Structured error handling in Golang with samber/oops — error builders, stack traces, error codes, error context, error wrapping, error attributes, user-facing vs developer messages, panic recovery, and logger integration. Apply when using or adopting samber/oops, or when the codebase already imports…

samber/cc-skills-golang · 74 tokens

golang-uber-fx

Golang application framework using uber-go/fx — fx.New, fx.Provide, fx.Invoke, fx.Module, fx.Lifecycle hooks, fx.Annotate (name/group/As), fx.Decorate, fx.Supply, fx.Replace, fx.WithLogger, and signal-aware Run(). Apply when using or adopting uber-go/fx, when the codebase imports go.uber.org/fx, or when wiring…

samber/cc-skills-golang · 122 tokens