lastMonth

Agent Skills › chaitanyagiri/munder-difflin › lastMonth

lastMonth

GitHub

通过运行内置解析器获取上一个完整日历月的具体日期范围，返回本地时区日期和UTC时间戳。用于月度报告等任务的时间边界设定，禁止手动计算日期，确保时间上下文准确无误。

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

Trigger Scenarios

需要查询上个月数据生成月度总结或报告确定上个月的起止时间

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.