last30days includes pricing or quota commentary; 36 code blocks for direct copy-paste. At roughly 18,469 words the SKILL.md is on the longer end of the catalog distribution.
last30days sits in the Science & Research category under the science-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.
These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.
Before reading anything else in this file, verify that the SKILL.md you just loaded is the versioned cache copy, not a stale marketplace clone:
CANONICAL_ROOT="$HOME/.claude/plugins/cache/last30days-skill/last30days"
CANONICAL_LATEST=$(ls -d "$CANONICAL_ROOT"/*/ 2>/dev/null | sort -V | tail -1)
CANONICAL_LATEST="${CANONICAL_LATEST%/}"last30days is a community-contributed Claude Code skill in the science-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/mvanhorn-last30days-skill/ and loads when your prompt matches the skill's trigger.
The last30days Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 115,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/mvanhorn-last30days-skill curl -L https://claudskills.com/skills/mvanhorn-last30days-skill/SKILL.md \ -o ~/.claude/skills/mvanhorn-last30days-skill/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/mvanhorn-last30days-skill/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/mvanhorn-last30days-skill/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\mvanhorn-last30days-skill\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/mvanhorn-last30days-skill/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. last30days is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{mvanhorn-last30days-skill-2026,
author = {mvanhorn},
title = {last30days [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/mvanhorn-last30days-skill/}
}Grade A · scanned 2026-06-13 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all Science & Research skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.