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/ericwang915/pythonclaw/timenpx skills add ericwang915/PythonClaw --skill timegit clone --depth 1 https://github.com/ericwang915/PythonClawWhat 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 | $0.00056 | $0.00388 |
| Opus 5 | $0.00028 | $0.00194 |
| Sonnet 5 | $0.00011 | $0.00078 |
| Haiku 4.5 | $0.00006 | $0.00039 |
Grade A, and why
system_time 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 2d 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
System Time Skill
Get current date, time, timezone info, and timezone conversions.
When to Use
✅ USE this skill when:
- "What time is it?"
- "What's the date?"
- "What time is it in Tokyo?"
- "Convert 2pm EST to UTC"
- "Give me a Unix timestamp"
- User needs timezone names or abbreviations
When NOT to Use
❌ DON'T use this skill when:
- Scheduling or calendar logic → use calendar/scheduling tools
- Cron expression help → use cron-specific docs
- Historical date arithmetic (e.g., "days between 1990 and 2000") → compute or use date libraries
Usage/Commands
# Current local time
python {skill_path}/time_util.py
# Time in a specific timezone
python {skill_path}/time_util.py --tz "America/New_York"
# List common timezone names
python {skill_path}/time_util.py --list-tz
# Unix timestamp
python {skill_path}/time_util.py --unix
# Convert a time between timezones
python {skill_path}/time_util.py --convert "2026-03-01 14:30" --from-tz "Asia/Shanghai" --to-tz "America/New_York"
Notes
- Uses bundled
time_util.pyCLI for all time queries - Timezone names follow IANA format (e.g.,
America/New_York,Asia/Shanghai)
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.
- 2d ago First seen · 52 lines · 56 tokens per session scan A 7e108ffa7a40
system_time is a skill published in the GitHub repository ericwang915/PythonClaw (41 stars, last pushed 24d ago), licensed MIT. It adds 56 tokens to every session and 388 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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