Agent skill

Apple Calendar

by DrugClaw in DrugClaw/DrugClaw

Query and manage Apple Calendar on macOS via icalBuddy (read) and AppleScript (osascript) for event creation.

ProprietaryAuto-check passedResearch & Science

Install Apple Calendar

skills CLI
$ npx skills add DrugClaw/DrugClaw --skill apple-calendar -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install DrugClaw/DrugClaw apple-calendar --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/DrugClaw/DrugClaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/built-in/apple-calendar .claude/skills/apple-calendar && rm -rf skills-src

Use ~/.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/

Facts

Skill name
apple-calendar
GitHub stars
126
Token cost
~333 tokens
SKILL.md length
71 words
Files
1
Skills in repo
25
Repo updated
First seen
Licence
Proprietary

At a glance

Query and manage Apple Calendar on macOS via icalBuddy (read) and AppleScript (osascript) for event creation.

  • Users ask about upcoming events
  • SKILL.md covers Prerequisites, Read events (icalBuddy), Create events (AppleScript) and Usage guidance
  • Calls brew and osascript
  • Adding calendar events

What it does

Apple Calendar is an agent skill from DrugClaw/DrugClaw. Query and manage Apple Calendar on macOS via icalBuddy (read) and AppleScript (osascript) for event creation. Use when users ask about upcoming events or adding calendar events.

Its SKILL.md is about 330 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: {"os":["darwin"],"deps":["icalBuddy"]}

It sits in Research & Science. It works with macOS. The repository describes itself as: 💊 AI Research Assistant for Accelerated Drug Discovery. 🦞.

When your agent uses it

  • Users ask about upcoming events
  • Adding calendar events

Example prompts

  • “/apple-calendar”

Requirements

  • Compatibility (from SKILL.md): {"os":["darwin"],"deps":["icalBuddy"]}

What it can do on your machine

Read from SKILL.md and the folder at commit 960a6e0. 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

    Shell commands in SKILL.md call:

    • brew
    • osascript

    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.

  • Compatibility

    {"os":["darwin"],"deps":["icalBuddy"]}

    From compatibility in the SKILL.md frontmatter.

Context cost

Apple Calendar loads about 333 tokens when it runs. Until then it costs about 49 tokens; SKILL.md has 71 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~49
When it runs · the whole SKILL.md, loaded when a task matches
~333

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 (Proprietary) doesn't allow us to republish the file, so here is its outline and opening line. It has 71 words (~333 tokens).

“Use this skill for Apple Calendar tasks on macOS.”

— opening of SKILL.md by DrugClaw, Proprietary
name
apple-calendar
compatibility
{"os":["darwin"],"deps":["icalBuddy"]}
license
Proprietary. LICENSE.txt has complete terms

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/built-in/apple-calendar of DrugClaw/DrugClaw.

Open the folder on GitHubat commit 960a6e0

Compare with similar skills

Apple Calendar 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.

Apple Calendar compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Apple Calendar this skillDrugClaw/DrugClaw126—~333Automated safety check: PassProprietary
Stata C Pluginsdylantmoore/stata-skill2911 repos~5.8kAutomated safety check: PassCustom licence
Tbtoolsxuzhougeng/wispterm443—~2.3kAutomated safety check: PassMIT
Stata DiscoverSepineTam/mcp-for-stata264—~1.7kAutomated safety check: PassAGPL-3.0
Uvgoogle-deepmind/science-skills3.2k2 repos~420Automated safety check: NotesApache-2.0
TiledbvcfK-Dense-AI/scientific-agent-skills48k1 repos~3.5kAutomated safety check: PassMIT

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Works with

Questions about Apple Calendar

What does Apple Calendar do?

Query and manage Apple Calendar on macOS via icalBuddy (read) and AppleScript (osascript) for event creation. Apple Calendar is an agent skill from DrugClaw/DrugClaw. Query and manage Apple Calendar on macOS via icalBuddy (read) and AppleScript (osascript) for event creation.

When should I use Apple Calendar?

Apple Calendar fits situations like: users ask about upcoming events; adding calendar events.

How do I install Apple Calendar in Claude Code?

Run `npx skills add DrugClaw/DrugClaw --skill apple-calendar -a claude-code`. Or copy the skill folder (skills/built-in/apple-calendar in DrugClaw/DrugClaw) into .claude/skills/apple-calendar in your project. Claude Code loads it when a task matches its description.

How do I install Apple Calendar in Codex?

Run `npx skills add DrugClaw/DrugClaw --skill apple-calendar -a codex`. Or copy the skill folder (skills/built-in/apple-calendar in DrugClaw/DrugClaw) into .agents/skills/apple-calendar in your project. Codex loads it when a task matches its description.

Can I use Apple Calendar 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 DrugClaw/DrugClaw --skill apple-calendar -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/apple-calendar, .gemini/skills/apple-calendar, .github/skills/apple-calendar and .opencode/skills/apple-calendar in your project.

What does Apple Calendar need to run?

Going by SKILL.md and its folder, Apple Calendar needs the command-line tools its instructions call (brew and osascript). Compatibility (from SKILL.md): {"os":["darwin"],"deps":["icalBuddy"]}.

Does Apple Calendar 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 Apple Calendar 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 Apple Calendar use?

Apple Calendar carries a proprietary licence (declared in SKILL.md). It is published on GitHub, but it is not open source: read the licence file before using or sharing it.

How many tokens does Apple Calendar use?

About 333 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.

What are the alternatives to Apple Calendar?

Skills that share tags, products or a category with Apple Calendar: Stata C Plugins (dylantmoore/stata-skill, 291 stars), Tbtools (xuzhougeng/wispterm, 443 stars), Stata Discover (SepineTam/mcp-for-stata, 264 stars) and Uv (google-deepmind/science-skills, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Apple Calendar?

DrugClaw (a GitHub organization) maintains it in DrugClaw/DrugClaw, which has 126 GitHub stars. The repository holds 25 skills in this directory. The repository was last updated on March 23, 2026.

Source: DrugClaw/DrugClaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.