Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add CraftOS-dev/CraftBot --skill calctlgit clone --depth 1 https://github.com/CraftOS-dev/CraftBotWrote 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.
[](https://agentmods.dev/skills/craftos-dev/craftbot/calctl)<a href="https://agentmods.dev/skills/craftos-dev/craftbot/calctl"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/calctl/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.
<a href="https://agentmods.dev/skills/craftos-dev/craftbot/calctl"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/calctl.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.00518 |
| Opus 5.5 | $0.00006 | $0.00207 |
| Sonnet 5.5 | $0.00003 | $0.00104 |
| Haiku 4.5 | $0.00002 | $0.00052 |
Grade A, and why
calctl 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 1mo 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.
What it actually says
calctl - Apple Calendar CLI
Manage Apple Calendar from the command line using icalBuddy (fast reads) and AppleScript (writes).
Requirements: brew install ical-buddy
Commands
| Command | Description |
|---|---|
calctl calendars |
List all calendars |
calctl show [filter] |
Show events (today, tomorrow, week, YYYY-MM-DD) |
calctl add <title> |
Create a new event |
calctl search <query> |
Search events by title (next 30 days) |
Examples
# List calendars
calctl calendars
# Show today's events
calctl show today
# Show this week's events
calctl show week
# Show events from specific calendar
calctl show week --calendar Work
# Show events on specific date
calctl show 2026-01-25
# Add an event
calctl add "Meeting with John" --date 2026-01-22 --time 14:00
# Add event to specific calendar
calctl add "Team Standup" --calendar Work --date 2026-01-22 --time 09:00 --end 09:30
# Add all-day event
calctl add "Holiday" --date 2026-01-25 --all-day
# Add event with notes
calctl add "Project Review" --date 2026-01-22 --time 15:00 --notes "Bring quarterly report"
# Search for events
calctl search "meeting"
Options for add
| Option | Description | Default |
|---|---|---|
-c, --calendar <name> |
Calendar to add event to | Privat |
-d, --date <YYYY-MM-DD> |
Event date | today |
-t, --time <HH:MM> |
Start time | 09:00 |
-e, --end <HH:MM> |
End time | 1 hour after start |
-n, --notes <text> |
Event notes | none |
--all-day |
Create all-day event | false |
Available Calendars
Common calendars on this system:
- Privat (personal)
- Work
- Familien Kalender
- rainbat solutions GmbH
- TimeTrack
What ships with it
1 file 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.
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.
- 1mo ago First seen · 74 lines · 15 tokens per session scan A 2cc34c9b1c7c
calctl is a skill published in the GitHub repository CraftOS-dev/CraftBot (395 stars, last pushed today), licensed MIT. It adds 15 tokens to every session and 518 once invoked, about $0.0001 per session on Opus 5.5. 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.
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