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 jeweis/mcpcat --skill world-clockgit clone --depth 1 https://github.com/jeweis/mcpcatWrote 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/jeweis/mcpcat/world-clock)<a href="https://agentmods.dev/skills/jeweis/mcpcat/world-clock"><img src="https://agentmods.dev/badge/skills/jeweis/mcpcat/world-clock/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/jeweis/mcpcat/world-clock"><img src="https://agentmods.dev/badge/skills/jeweis/mcpcat/world-clock.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00032 | $0.00223 |
| Opus 5.5 | $0.00013 | $0.00089 |
| Sonnet 5.5 | $0.00006 | $0.00045 |
| Haiku 4.5 | $0.00003 | $0.00022 |
Grade A, and why
world-clock 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
世界时钟
通过当前连接中的 get_current_time 查询用户关心的各个 IANA 时区，例如上海 Asia/Shanghai、伦敦 Europe/London、纽约 America/New_York。同名城市或 CST 等缩写有歧义时先确认地点，不把服务器默认时区当作用户时区。
报告城市、完整当地日期、时间及 UTC 偏移；查询不是原子快照，不把几秒差异解释为时差。判断是否适合联系时，优先用用户给定作息，否则明确假设周一至周五 09:00–18:00，不把这个假设当作节假日或实际在线状态。
没有工具或调用失败时说明无法取得实时数据，不编造“现在”。此 Skill 只读时间，不发消息、不设置提醒。
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 · 13 lines · 32 tokens per session scan A 5b4808b92f0b
world-clock is a skill published in the GitHub repository jeweis/mcpcat (11 stars, last pushed 3d ago), licensed MIT. It adds 32 tokens to every session and 223 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 2026-10-19.
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