lastMonth

Agent Skills › chaitanyagiri/munder-difflin › lastMonth

lastMonth

GitHub

将“上月”解析为具体的ISO日期范围，提供本地时区起止日期及精确UTC时间戳，避免手动计算。适用于月度报告、月末总结等需明确时间边界的任务。

resources/skills/lastMonth/SKILL.md chaitanyagiri/munder-difflin

Trigger Scenarios

需要获取上个月完整日历月份的时间范围生成月度报告或月末总结前确定时间边界

Install

npx skills add chaitanyagiri/munder-difflin --skill lastMonth -g -y

More Options

Non-standard path

npx skills add https://github.com/chaitanyagiri/munder-difflin/tree/main/resources/skills/lastMonth -g -y

Use without installing

npx skills use chaitanyagiri/munder-difflin@lastMonth

指定 Agent (Claude Code)

npx skills add chaitanyagiri/munder-difflin --skill lastMonth -a claude-code -g -y

安装 repo 全部 skill

npx skills add chaitanyagiri/munder-difflin --all -g -y

预览 repo 内 skill

npx skills add chaitanyagiri/munder-difflin --list

SKILL.md

Frontmatter

{
    "name": "lastMonth",
    "description": "Resolve \"lastMonth\" to a concrete ISO date range relative to your run time —\nthe previous full calendar month. Returns inclusive civil dates plus exact UTC instants so you have\ntemporal context without computing dates by hand. Read-only: no writes, no\nnetwork. Use before a task over last month (monthly reports, month-end summaries).\n",
    "allowed-tools": [
        "Bash"
    ]
}

/lastMonth

Get the concrete date range for the previous full calendar month by running the bundled resolver:

node "$AGENT_DIR/.claude/skills/temporal/when.mjs" lastMonth

It prints a human-readable line plus a JSON record:

start / end — inclusive civil dates (YYYY-MM-DD) in your local timezone
startUtc / endExclusiveUtc — the same window as a half-open [start, end) range of exact UTC instants, for timestamp-based queries
days, timezone, asOf — the span, your timezone, and when this resolved

Use the returned dates as the time bounds for the task at hand. Do not derive dates by hand — this resolver is the source of truth. For the full window list or an arbitrary range (e.g. last45days, last6months), see the /temporal skill.