time-zone-safety

time-zone-safety is a skill for Claude Code from doccker/cc-use-exp. It costs 75 tokens per session (2,830 once invoked), scanned A, original, no licence file.

A coding rule for handling the current date and time safely across time zones. It covers calls such as Date.now() and LocalDateTime.now(), as well as date boundaries and database time fields.

In plain words
What is it for?
Use it when code reads the current time, compares dates across time zones, calculates period boundaries, or works with stored timestamps.
Why use it?
It helps prevent time-zone differences between development and production from causing incorrect daily, weekly, or monthly results.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the cc-use-exp plugin — 63 skills, 25 commands shipped together

Install

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.

agentmods
npx agentmods add skills/doccker/cc-use-exp/time-zone-safety
Any agent
npx skills add doccker/cc-use-exp --skill time-zone-safety
Clone the repo
git clone --depth 1 https://github.com/doccker/cc-use-exp

Made for: Claude Code.

Or install cc-use-exp, the plugin that ships this one along with the rest of its 63 skills, 25 commands.

Wrote 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.

agentmods badge for time-zone-safety

README.md
[![agentmods](https://agentmods.dev/badge/skills/doccker/cc-use-exp/time-zone-safety.svg)](https://agentmods.dev/skills/doccker/cc-use-exp/time-zone-safety)
Your own site
<a href="https://agentmods.dev/skills/doccker/cc-use-exp/time-zone-safety"><img src="https://agentmods.dev/badge/skills/doccker/cc-use-exp/time-zone-safety.svg" alt="Measured on agentmods" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,830 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00075 $0.02830
Opus 5 $0.00037 $0.01415
Sonnet 5 $0.00015 $0.00566
Haiku 4.5 $0.00007 $0.00283

Measured 6d ago against content hash f73dac5b3b40, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

time-zone-safety 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.

.antigravity/skills/time-zone-safety/SKILL.md · 302 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

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.

  1. 6d ago First seen · 302 lines · 75 tokens per session scan A f73dac5b3b40

Subscribe to this mod's changes

time-zone-safety is a skill published in the GitHub repository doccker/cc-use-exp (1,039 stars, last pushed 11d ago), with no licence file. It adds 75 tokens to every session and 2,830 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 2026-08-30.

Related

Other skills, from other repositories

agenttrace-session-audit

Audit local AI coding-agent sessions with agenttrace for cost, tool failures, latency, anomalies, health, diffs, and CI gates.

sickn33/agentic-awesome-skills · 34 tokens

perf-optimization

Profile-driven performance optimization protocol. Use when profiling data (CPU, heap, trace) is available or when the user requests performance analysis. Covers methodology (Profile → Analyze → Opportunity Scan → Prioritize → Optimize → Benchmark), optimization pattern catalog, safety invariants, and when-to-stop…

irahardianto/awesome-agv · 72 tokens

incident-response

Structured incident workflow: severity classification, triage, diagnosis, mitigation, postmortem, and prevention. Template-driven with blameless review.

irahardianto/awesome-agv · 32 tokens

bug-fix-protocol

8-step disciplined bug-fix protocol that treats every production bug as two failures — the code defect itself and the testing system that allowed it through. Use when fixing a production bug, investigating a regression, writing a post-mortem, or auditing a missed defect. Triggers on "fix this bug", "production bug"…

CodeAlive-AI/ai-driven-development · 94 tokens

debugging-protocol

Comprehensive protocol for validating root causes of software issues. Use when you need to systematically debug a complex bug, flaky test, or unknown system behavior by forming hypotheses and validating them with specific tasks.

irahardianto/awesome-agv · 44 tokens

issue

You are a senior engineering lead and product architect. Given an observation, bug, or gap, conduct a thorough multi-dimensional investigation, find the root cause, plan the resolution, and create a detailed actionable GitHub issue.

rajitsaha/100xprism · 46 tokens