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 agentmods add skills/spillwavesolutions/automating-mac-apps-plugin/automating-calendarnpx skills add SpillwaveSolutions/automating-mac-apps-plugin --skill automating-calendargit clone --depth 1 https://github.com/SpillwaveSolutions/automating-mac-apps-pluginWrote 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/spillwavesolutions/automating-mac-apps-plugin/automating-calendar)<a href="https://agentmods.dev/skills/spillwavesolutions/automating-mac-apps-plugin/automating-calendar"><img src="https://agentmods.dev/badge/skills/spillwavesolutions/automating-mac-apps-plugin/automating-calendar.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00070 | $0.01428 |
| Opus 5 | $0.00035 | $0.00714 |
| Sonnet 5 | $0.00014 | $0.00286 |
| Haiku 4.5 | $0.00007 | $0.00143 |
Grade A, and why
automating-calendar 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Automating Calendar (JXA with AppleScript Discovery)
Contents
- Relationship to the macOS automation skill
- Core Framing
- Workflow (default)
- Core Examples
- What to load
Relationship to the macOS automation skill
- Use
automating-mac-appsfor general app permissions, shell commands, UI scripting, and cross-app automation patterns. - This skill focuses specifically on Calendar events, calendars, and EventKit bridge functionality.
- PyXA Installation: To use PyXA examples in this skill, see the installation instructions in
automating-mac-appsskill (PyXA Installation section).
Core Framing
- Calendar dictionary is AppleScript-first; discover there
- JXA provides logic, data handling, and ObjC/EventKit bridge access
- PyXA offers modern Python alternative with cleaner syntax
Implementation Notes: See automating-calendar/references/calendar-basics.md
Workflow (default)
- Discover Calendar dictionary terms in Script Editor.
- Prototype minimal AppleScript commands.
- Port to JXA with defensive error handling.
- Implemented batch reads (avoided heavy
.whose()). - Added EventKit bridge for advanced queries.
- Tested with sample events and verified results.
Error Handling
- Wrap operations in try-catch blocks
- Verify calendar access:
Calendar.calendars.length > 0 - Check event creation:
if (!event.id()) throw new Error('Event creation failed') - Log operations for debugging
Validation Checklist
- Calendar permissions granted (System Settings > Privacy & Security > Calendars)
- Calendar access confirmed:
Calendar.calendars.length > 0 - Event created with valid start/end dates
- Event visible in Calendar UI after save
- EventKit bridge queries return expected results
- Error handling wraps all operations
- Output matches expected event properties
What ships with it
17 files 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.
- references/calendar-advanced.md 687 B
- references/calendar-basics.md 498 B
- references/calendar-dictionary.md 562 B
- references/calendar-pyxa-api-reference.md 20 KB
- references/calendar-recipes.md 1.1 KB
- references/eventkit-create.md 1.6 KB
- references/eventkit-exceptions.md 1.1 KB
- references/eventkit-occurrence-cancel.md 1.8 KB
- references/eventkit-query.md 1.3 KB
- references/eventkit-timezones.md 1.4 KB
- scripts/calendar_summary.py 4.6 KB runs code
- scripts/create_calendar_event.py 1.7 KB runs code
- scripts/delete_calendar_events.py 2.2 KB runs code
- scripts/find_free_slots.py 4.7 KB runs code
- scripts/list_upcoming_events.py 2.8 KB runs code
- scripts/set_up_calendar_automation.py 942 B runs code
- scripts/set_up_calendar_automation.sh 497 B runs code
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.
- 6d ago First seen · 166 lines · 70 tokens per session scan A c6f858b94ae9
automating-calendar is a skill published in the GitHub repository SpillwaveSolutions/automating-mac-apps-plugin (40 stars, last pushed 15d ago), licensed MIT. It adds 70 tokens to every session and 1,428 once invoked, about $0.0003 per session on Opus 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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