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/diillson/chatcli/calendarnpx skills add diillson/chatcli --skill calendargit clone --depth 1 https://github.com/diillson/chatcliWrote 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/diillson/chatcli/calendar)<a href="https://agentmods.dev/skills/diillson/chatcli/calendar"><img src="https://agentmods.dev/badge/skills/diillson/chatcli/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 | $0.00071 | $0.01028 |
| Opus 5 | $0.00036 | $0.00514 |
| Sonnet 5 | $0.00014 | $0.00206 |
| Haiku 4.5 | $0.00007 | $0.00103 |
Grade A, and why
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 yesterday.
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 — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Calendar
Manage the user's calendar through their own installed tooling — skill + terminal + native CLI. ChatCLI bundles no calendar client; detect what exists and drive it.
Step 0 — Identify the OS first (this is a multi-OS CLI)
ChatCLI runs on Windows, macOS, and Linux. Probe accordingly:
- macOS / Linux (
sh):command -v gcalcli khal 2>/dev/null; uname -s - Windows (PowerShell):
Get-Command gcalcli -ErrorAction SilentlyContinue | Select-Object Name
Step 1 — Choose the tool
Preference order:
gcalcli— Google Calendar, scriptable, cross-platform (pip). The common case; prefer it.khal— CalDAV/local (privacy-friendly, self-hosted; Unix).- macOS with neither → AppleScript
Calendar.appviaosascript. - Windows with neither → Outlook Calendar via PowerShell COM.
- None → tell the user what to install (
pipx install gcalcli/apt install khal) and stop.
Step 2 — Always resolve "now" before scheduling
Relative times ("tomorrow 3pm", "next Tuesday") need an anchor. Get it first:
- macOS / Linux:
date '+%Y-%m-%d %H:%M %Z (%A)' - Windows:
Get-Date -Format "yyyy-MM-dd HH:mm zzz (dddd)"
Then compute the absolute start/end and confirm it back to the user.
Step 3 — Create an event
gcalcli:
gcalcli add --title "Sync with Alice" --when "2026-06-05 15:00" --duration 30 --where "Meet" --noprompt
Add --calendar "<name>" to target a specific calendar; gcalcli list shows them.
khal:
khal new 2026-06-05 15:00 16:00 "Sync with Alice"
macOS Calendar (osascript):
osascript -e 'tell application "Calendar" to tell calendar "Home"
make new event with properties {summary:"Sync with Alice", start date:(date "2026-06-05 15:00"), end date:(date "2026-06-05 15:30")}
end tell'
Windows Outlook (PowerShell COM):
$ol = New-Object -ComObject Outlook.Application
$appt = $ol.CreateItem(1) # 1 = AppointmentItem
$appt.Subject = "Sync with Alice"
$appt.Start = [datetime]"2026-06-05 15:00"
$appt.Duration = 30
$appt.Save()
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.
- yesterday First seen · 99 lines · 71 tokens per session scan A 8d11a39acb13
calendar is a skill published in the GitHub repository diillson/chatcli (90 stars, last pushed today), licensed Apache-2.0. It adds 71 tokens to every session and 1,028 once invoked, about $0.0004 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 2026-09-03.
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