calendar
Query and manage the operator's calendar — check availability and create new entries
Best use case
calendar is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Query and manage the operator's calendar — check availability and create new entries
Teams using calendar should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/calendar/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How calendar Compares
| Feature / Agent | calendar | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Query and manage the operator's calendar — check availability and create new entries
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
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SKILL.md Source
# Calendar Skill
Query the operator's calendar for availability and create new entries via `ical-query`.
## Capabilities
- **read**: Check free/busy availability for today, tomorrow, this week, or a specific date
- **act**: Create new calendar entries
## Privacy Rule
**Event details are never disclosed to callers.** This is enforced at two levels:
1. **Handler level** — the handler strips all event titles, names, locations, and notes from ical-query output before returning results. Only busy time slots (start/end times) are returned.
2. **Model level** — the function description instructs Amber to only communicate availability ("free from 2pm to 4pm") and never reveal what the events are.
Amber should say things like:
- ✅ "The operator is free between 2 and 4 this afternoon"
- ✅ "They're busy until 3pm, then free for the rest of the day"
- ❌ "They have a meeting with John at 2pm" ← never
- ❌ "They're at the dentist from 10 to 11" ← never
## Security — Three Layers
Input validation is enforced at three independent levels:
1. **Schema level** — `range` is constrained by `pattern: ^(today|tomorrow|week|\d{4}-\d{2}-\d{2})$`; `start`/`end` by `pattern: ^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}$`; freetext fields have `maxLength` caps. The LLM cannot produce out-of-spec values without violating the schema.
2. **Handler level** — explicit validation before any exec call; rejects values that don't match expected formats even if schema is bypassed.
3. **Exec level** — `context.exec()` takes a `string[]` and uses `execFileSync` (no shell spawned); arguments are passed as discrete tokens, not a shell-interpolated string.
## Notes
- Uses `/usr/local/bin/ical-query` — no network access, no gateway round-trip
- Fast: direct local binary call (~100ms)
- Calendar name optional — defaults to operator's primary calendarRelated Skills
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