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Create and test renCal plugins that contribute themes or calendar providers.
Install Rencal
$ npx skills add t4t5/rencal --skill rencal -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install t4t5/rencal rencal --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/t4t5/rencal.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/rencal .claude/skills/rencal && 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 "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .claude/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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/t4t5/rencal/tree/main/skills/rencalType 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 t4t5/rencal --skill rencal -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install t4t5/rencal rencal --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/t4t5/rencal.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/rencal .agents/skills/rencal && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .agents/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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 t4t5/rencal --skill rencal -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install t4t5/rencal rencal --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/t4t5/rencal.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/rencal .cursor/skills/rencal && 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 "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .cursor/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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/t4t5/rencal.git --path skills/rencal--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 t4t5/rencal --skill rencal -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install t4t5/rencal rencal --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/t4t5/rencal.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/rencal .gemini/skills/rencal && 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 "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .gemini/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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 t4t5/rencal rencalInstalls 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 t4t5/rencal --skill rencal -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/t4t5/rencal.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/rencal .github/skills/rencal && 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 "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .github/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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 t4t5/rencal --skill rencal -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install t4t5/rencal rencal --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/t4t5/rencal.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/rencal .opencode/skills/rencal && 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 "rencal" agent skill from https://github.com/t4t5/rencal/tree/main/skills/rencal into .opencode/skills/rencal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rencal", 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
rencal- GitHub stars
- 159
- Token cost
- ~327 tokens
- SKILL.md length
- 152 words
- Files
- 3 (incl. references)
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- MIT
At a glance
Create and test renCal plugins that contribute themes or calendar providers.
- Someone wants to make
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Publish a renCal plugin
- Use the caldir skill for calendar events
What it does
Rencal is an agent skill from t4t5/rencal. Create and test renCal plugins that contribute themes or calendar providers. Use when someone wants to make, edit, or publish a renCal plugin; use the caldir skill for calendar events.
Its SKILL.md is about 330 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/providers.md` and `references/themes.md`).
It sits in Frontend & Design. It works with GitHub. The repository describes itself as: A modern desktop calendar. Built for Omarchy. The licence is MIT.
When your agent uses it
- Someone wants to make
- Publish a renCal plugin
- Use the caldir skill for calendar events
Example prompts
- “/rencal”
What it can do on your machine
Read from SKILL.md and the folder at commit 4388156. 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
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
Rencal loads about 327 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 48 tokens; SKILL.md has 152 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 t4t5/rencal at commit 4388156, republished under its MIT licence (© t4t5). 152 words, ~327 tokens.
Download SKILL.mdSave it as
.claude/skills/rencal/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- rencal
- description
- Create and test renCal plugins that contribute themes or calendar providers. Use when someone wants to make, edit, or publish a renCal plugin; use the caldir skill for calendar events.
renCal plugins
Help the user build a plugin in their own checkout. A plugin is a GitHub repository with a rencal-plugin.toml at its root. It can contribute CSS themes, calendar providers, or both.
Read the relevant guide before creating files:
Keep plugin source in the user's checkout. For live testing, add its absolute path or ~/ path to the plugins array in ~/.config/rencal/plugins.toml; renCal links local checkouts and reloads theme edits. Preserve any existing entries and other settings in that file. Avoid editing installed copies under ~/.local/share/rencal/plugins/.
Check that the manifest names existing files and uses a unique, lowercase <github-owner>.<name> ID. For a published plugin, the ID owner must match the GitHub repository owner. Test the local checkout in renCal before publishing. Only create a repository, push, publish a release, or change the user's plugin declarations when the request authorizes that action.
© t4t5, 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 2 other files (references) in skills/rencal of t4t5/rencal.
- SKILL.md
- references/providers.md
- references/themes.md
Open the folder on GitHubat commit 4388156
Compare with similar skills
Rencal 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 |
|---|---|---|---|---|---|---|
| Rencal this skillt4t5/rencal | 159 | — | ~327 | Automated safety check: Pass | MIT | |
| Scraps Reviewgetsentry/sentry | 46k | — | ~1.2k | Automated safety check: Notes | Custom licence | |
| Readme I18nY80/bmm | 344 | 2 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Uncodixfypdsuwwz/chatgpt-vue3-light-mvp | 578 | 2 repos | ~3k | Automated safety check: Pass | MIT | |
| Paper2htmlQuZhan51496/paper2anything | 469 | — | ~3.3k | Automated safety check: Notes | Apache-2.0 | |
| Fumadocsbetter-notify/better-notify | 313 | — | ~2.3k | Automated safety check: Pass | MIT |
Similar skills
- Official
Readme I18n
Y80/bmm
A skill your agent uses when the user wants to translate a repository README, make a repo multilingual, localize docs, add a language switcher, internationalize the README, or update localized…
Uncodixfy
pdsuwwz/chatgpt-vue3-light-mvp
Prevents generic AI/Codex UI patterns when generating frontend code.
Paper2html
QuZhan51496/paper2anything
Convert an academic paper PDF into a publish-ready, self-contained single-page project homepage (a self-contained index.html) — the kind of paper landing page researchers host on GitHub Pages.
Fumadocs
better-notify/better-notify
A skill your agent uses when writing MDX documentation pages for a Fumadocs project — frontmatter, meta.json, page ordering, and fumadocs-ui React components available inside MDX content.
Great Docs
pymc-labs/pathmc
Generate documentation sites for Python packages with Great Docs.
More from t4t5/rencal
Add Astro Icon
t4t5/rencal
Turn raw SVG markup into an Astro icon component in website/src/icons/.
Add Icon
t4t5/rencal
Turn raw SVG markup into a React icon component in src/icons/.
Generate Release Notes
t4t5/rencal
Draft short project release notes from git tag diffs. An agent skill from t4t5/rencal.
Local Caldir
t4t5/rencal
Develop renCal against a local caldir checkout instead of the pinned release.
Performance Analysis
t4t5/rencal
Analyze frontend performance recordings and propose ranked optimizations.
Related
Works with
Categories
Questions about Rencal
What does Rencal do?
Create and test renCal plugins that contribute themes or calendar providers. Rencal is an agent skill from t4t5/rencal. Create and test renCal plugins that contribute themes or calendar providers.
When should I use Rencal?
Rencal fits situations like: someone wants to make; publish a renCal plugin; use the caldir skill for calendar events.
How do I install Rencal in Claude Code?
Run `npx skills add t4t5/rencal --skill rencal -a claude-code`. Or copy the skill folder (skills/rencal in t4t5/rencal) into .claude/skills/rencal in your project. Claude Code loads it when a task matches its description.
How do I install Rencal in Codex?
Run `npx skills add t4t5/rencal --skill rencal -a codex`. Or copy the skill folder (skills/rencal in t4t5/rencal) into .agents/skills/rencal in your project. Codex loads it when a task matches its description.
Can I use Rencal 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 t4t5/rencal --skill rencal -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rencal, .gemini/skills/rencal, .github/skills/rencal and .opencode/skills/rencal in your project.
What does Rencal need to run?
SKILL.md names no scripts, command-line tools or credentials: Rencal is instructions for the agent only.
Does Rencal 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 Rencal 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 Rencal use?
Rencal 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 Rencal use?
About 327 tokens (SKILL.md is roughly 1.3k 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 729 tokens, read only when the agent opens those files.
What are the alternatives to Rencal?
Skills that share tags, products or a category with Rencal: Scraps Review (getsentry/sentry, 46k stars), Readme I18n (Y80/bmm, 344 stars), Uncodixfy (pdsuwwz/chatgpt-vue3-light-mvp, 578 stars) and Paper2html (QuZhan51496/paper2anything, 469 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rencal?
t4t5 (a GitHub user) maintains it in t4t5/rencal, which has 159 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 9, 2026.
Source: t4t5/rencal on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.