lastMonth

Agent Skills › HarnessMD/munder-difflin › lastMonth

lastMonth

GitHub

将“上个月”解析为具体的 ISO 日期范围，提供包含时区的民用日期及精确 UTC 时间戳。作为时间边界的事实来源，避免手动计算日期，适用于月度报告等任务。

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

Trigger Scenarios

需要获取上一个完整日历月的具体日期范围生成月度报告或月末总结前确定时间边界

Install

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

More Options

Non-standard path

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

Use without installing

npx skills use HarnessMD/munder-difflin@lastMonth

指定 Agent (Claude Code)

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

安装 repo 全部 skill

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

预览 repo 内 skill

npx skills add HarnessMD/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.