Chat Format
ruvnet/ruflo
Format prompts for different LLM providers with chat templates and HNSW-powered context retrieval
A skill your agent uses when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly.
MITAuto-check passed
Install Currency Formatting
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist currency-formatting --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/currency-formatting .claude/skills/currency-formatting && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .claude/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formattingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist currency-formatting --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/currency-formatting .agents/skills/currency-formatting && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .agents/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist currency-formatting --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/currency-formatting .cursor/skills/currency-formatting && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .cursor/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/currency-formatting--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist currency-formatting --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/currency-formatting .gemini/skills/currency-formatting && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .gemini/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist currency-formattingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/currency-formatting .github/skills/currency-formatting && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .github/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist currency-formatting --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/currency-formatting .opencode/skills/currency-formatting && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "currency-formatting" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/currency-formatting into .opencode/skills/currency-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "currency-formatting", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
currency-formatting- GitHub stars
- 74k
- Token cost
- ~593 tokens
- SKILL.md length
- 253 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly.
- Reviewing utility functions
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Component props
What it does
Currency Formatting is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly.
Its SKILL.md is about 590 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing utility functions
- Component props
- Template strings that format numbers
- Dates to check whether Intl APIs are used correctly
Example prompts
- “/currency-formatting”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Currency Formatting loads about 593 tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 253 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 253 words, ~593 tokens.
Download SKILL.mdSave it as
.claude/skills/currency-formatting/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- currency-formatting
- description
- Use when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly.
- metadata.category
- i18n
- metadata.priority
- medium
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 20
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/i18n/currency-formatting
Use Intl APIs for currency, number, and date formatting
Number and currency formatting rules differ significantly across locales — a value formatted as "$1,234.56" in the US is written "1.234,56 $" in Germany and "¥1,235" in Japan. Hardcoded formatting causes incorrect display for international users and is expensive to maintain manually as you add locales.
Quick Reference
- Never hardcode currency symbols or thousand separators like $ or comma
- Use Intl.NumberFormat with the currency style for monetary values
- Use Intl.DateTimeFormat for locale-aware date and time display
- Pass the user locale explicitly rather than relying on the browser default
- Use Intl.Collator and locale fallback chains for sorting and searching
Check
Identify all places in this codebase where numbers, currencies, or dates are formatted manually instead of using Intl.NumberFormat or Intl.DateTimeFormat. Also flag locale-sensitive sorting that uses plain string comparison instead of Intl.Collator and any formatter that lacks a fallback locale.
Fix
Replace manual number and currency formatting with Intl.NumberFormat and replace manual date formatting with Intl.DateTimeFormat, passing the user locale explicitly. Use Intl.Collator for locale-aware sorting and resolve a supported fallback locale when the requested locale is unavailable.
Explain
Explain why locale-aware formatting with Intl APIs is required for international applications, what goes wrong when formatting is hardcoded, and why sorting/searching should also use locale-aware comparison.
Code Review
Review utility functions and components that render numbers, prices, percentages, or dates. Flag any hardcoded currency symbols, separators, or date format strings, and show Intl-based alternatives.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/i18n/currency-formatting
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/currency-formatting of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Currency Formatting next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Currency Formatting this skillthedaviddias/Front-End-Checklist | 74k | — | ~593 | Automated safety check: Pass | MIT | |
| Chat Formatruvnet/ruflo | 74k | — | ~362 | Automated safety check: Notes | MIT | |
| Azure Functionsdavila7/claude-code-templates | 33k | 2 repos | ~344 | Automated safety check: Pass | MIT | |
| Neon Functionssickn33/agentic-awesome-skills | 47k | 1 repos | ~8.6k | Automated safety check: Notes | Apache-2.0 | |
| GCP Cloud Functionssickn33/agentic-awesome-skills | 47k | 2 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Find Similar Functionsmillionco/react-doctor | 15k | — | ~1.2k | Automated safety check: Pass | Custom licence |
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Questions about Currency Formatting
What does Currency Formatting do?
A skill your agent uses when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly. Currency Formatting is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing utility functions, component props, or template strings that format numbers, prices, or dates to check whether Intl APIs are used correctly.
When should I use Currency Formatting?
Currency Formatting fits situations like: reviewing utility functions; component props; template strings that format numbers; dates to check whether Intl APIs are used correctly.
How do I install Currency Formatting in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a claude-code`. Or copy the skill folder (skills/currency-formatting in thedaviddias/Front-End-Checklist) into .claude/skills/currency-formatting in your project. Claude Code loads it when a task matches its description.
How do I install Currency Formatting in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a codex`. Or copy the skill folder (skills/currency-formatting in thedaviddias/Front-End-Checklist) into .agents/skills/currency-formatting in your project. Codex loads it when a task matches its description.
Can I use Currency Formatting in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill currency-formatting -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/currency-formatting, .gemini/skills/currency-formatting, .github/skills/currency-formatting and .opencode/skills/currency-formatting in your project.
What does Currency Formatting need to run?
SKILL.md names no scripts, command-line tools or credentials: Currency Formatting is instructions for the agent only.
Does Currency Formatting access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Currency Formatting safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Currency Formatting use?
Currency Formatting is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Currency Formatting use?
About 593 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.7k tokens, read only when the agent opens those files.
What are the alternatives to Currency Formatting?
Skills that share tags, products or a category with Currency Formatting: Chat Format (ruvnet/ruflo, 74k stars), Azure Functions (davila7/claude-code-templates, 33k stars), Neon Functions (sickn33/agentic-awesome-skills, 47k stars) and GCP Cloud Functions (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Currency Formatting?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.