Impeccable
bestofjs/bestofjs
A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…
Date and time formatting for applications. An agent skill from Sidiora-Labs/centra-llm-agents.
Install Date Formatting
$ npx skills add Sidiora-Labs/centra-llm-agents --skill date-formatting -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents date-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/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/protocol/skills/date-formatting .claude/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .claude/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-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 Sidiora-Labs/centra-llm-agents --skill date-formatting -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents date-formatting --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/protocol/skills/date-formatting .agents/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .agents/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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 Sidiora-Labs/centra-llm-agents --skill date-formatting -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents date-formatting --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/protocol/skills/date-formatting .cursor/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .cursor/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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/Sidiora-Labs/centra-llm-agents.git --path protocol/skills/date-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 Sidiora-Labs/centra-llm-agents --skill date-formatting -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents date-formatting --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/protocol/skills/date-formatting .gemini/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .gemini/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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 Sidiora-Labs/centra-llm-agents date-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 Sidiora-Labs/centra-llm-agents --skill date-formatting -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/protocol/skills/date-formatting .github/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .github/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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 Sidiora-Labs/centra-llm-agents --skill date-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 Sidiora-Labs/centra-llm-agents date-formatting --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/protocol/skills/date-formatting .opencode/skills/date-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 "date-formatting" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/date-formatting into .opencode/skills/date-formatting/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "date-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
date-formatting- GitHub stars
- 115
- Token cost
- ~813 tokens
- SKILL.md length
- 141 words
- Files
- 3 (incl. references)
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Date and time formatting for applications. An agent skill from Sidiora-Labs/centra-llm-agents.
- Displaying dates
- SKILL.md covers Critical Rule, Quick Reference, Common Patterns and Format Options, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Formatting time in UI components
What it does
Date Formatting is an agent skill from Sidiora-Labs/centra-llm-agents. Date and time formatting for applications. Use when displaying dates, timestamps, or formatting time in UI components. Use centralized utilities instead of native JS date methods. Triggers on date, time, timestamp, formatDate, formatTime, toLocaleDateString, toLocaleString, dateUtils, locale, format, display date, show time, datetime, calendar.
Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/rules/date-formatting.md`).
It sits in Frontend & Design, covering Internationalization. The repository describes itself as: A stateful AI operating system for serious, long-horizon work.
When your agent uses it
- Displaying dates
- Formatting time in UI components
- ToLocaleDateString
Example prompts
- “/date-formatting”
Requirements
- Pre-approved tools (allowed-tools): Read, Grep, Glob
What it can do on your machine
Read from SKILL.md and the folder at commit 01c6aef. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGrepGlob
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Date Formatting loads about 813 tokens when it runs, and up to ~2.1k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 141 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 141 words (~813 tokens).
“Guidelines for consistent date and time formatting across applications.”
- name
- date-formatting
- allowed-tools
- Read, Grep, Glob
Files
SKILL.md and 2 other files (references) in protocol/skills/date-formatting of Sidiora-Labs/centra-llm-agents.
- SKILL.md
- SKILL.mtx
- references/rules/date-formatting.md
Open the folder on GitHubat commit 01c6aef
Compare with similar skills
Date 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 |
|---|---|---|---|---|---|---|
| Date Formatting this skillSidiora-Labs/centra-llm-agents | 115 | — | ~813 | Automated safety check: Pass | Custom licence | |
| Impeccablebestofjs/bestofjs | 3.1k | 27 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Chatbox i18n Translatorchatboxai/chatbox | 42k | — | ~508 | Automated safety check: Pass | GPL-3.0 | |
| Internationalization Workflow with i18niOfficeAI/AionUi | 33k | 1 repos | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Enforce Rules For I18nmoeru-ai/airi | 50k | — | ~1.5k | Automated safety check: Pass | MIT | |
| Claude Desktop Chinese Localizationjavaht/claude-desktop-zh-cn | 7.5k | — | ~1.6k | Automated safety check: Pass | MIT |
Similar skills
Chatbox i18n Translator
chatboxai/chatbox
Translates new or changed i18n keys from a Chatbox Pro diff, staged changes or a commit range, writing the locale JSON files directly with a built-in glossary.
Internationalization Workflow with i18n
iOfficeAI/AionUi
Standards for keeping all user-facing text translatable: read the i18n config first, use namespaced keys, reuse shared strings and follow the key naming rules.
Enforce Rules For I18n
moeru-ai/airi
Review pending AIRI translations on Crowdin in a batch, then sync them into the repository.
Claude Desktop Chinese Localization
javaht/claude-desktop-zh-cn
Adds missing Simplified and Traditional Chinese translations to the Claude Desktop Chinese patch across three layers, then checks how many mappings actually hit.
Taro UI Guide
jd-opensource/taro-ui
Guides installing, configuring, styling and using taro-ui (At* components) in Taro apps for WeChat, Alipay, H5 and React Native.
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Related
Categories
Questions about Date Formatting
What does Date Formatting do?
Date and time formatting for applications. An agent skill from Sidiora-Labs/centra-llm-agents. Date Formatting is an agent skill from Sidiora-Labs/centra-llm-agents. Date and time formatting for applications.
When should I use Date Formatting?
Date Formatting fits situations like: displaying dates; formatting time in UI components; toLocaleDateString.
How do I install Date Formatting in Claude Code?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill date-formatting -a claude-code`. Or copy the skill folder (protocol/skills/date-formatting in Sidiora-Labs/centra-llm-agents) into .claude/skills/date-formatting in your project. Claude Code loads it when a task matches its description.
How do I install Date Formatting in Codex?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill date-formatting -a codex`. Or copy the skill folder (protocol/skills/date-formatting in Sidiora-Labs/centra-llm-agents) into .agents/skills/date-formatting in your project. Codex loads it when a task matches its description.
Can I use Date 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 Sidiora-Labs/centra-llm-agents --skill date-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/date-formatting, .gemini/skills/date-formatting, .github/skills/date-formatting and .opencode/skills/date-formatting in your project.
What does Date Formatting need to run?
SKILL.md names no scripts, command-line tools or credentials: Date Formatting is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Glob.
Does Date Formatting access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Date 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 Date Formatting use?
Date Formatting has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Date Formatting use?
About 813 tokens (SKILL.md is roughly 3.3k 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 1.3k tokens, read only when the agent opens those files.
What are the alternatives to Date Formatting?
Skills that share tags, products or a category with Date Formatting: Impeccable (bestofjs/bestofjs, 3.1k stars), Chatbox i18n Translator (chatboxai/chatbox, 42k stars), Internationalization Workflow with i18n (iOfficeAI/AionUi, 33k stars) and Enforce Rules For I18n (moeru-ai/airi, 50k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Date Formatting?
Sidiora-Labs (a GitHub organization) maintains it in Sidiora-Labs/centra-llm-agents, which has 115 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on September 18, 2026.
Source: Sidiora-Labs/centra-llm-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.