ClaudSkills / Science & Research / research-methods

evaluating-llms-harness

Q: What is a Claude Code skill and how does the evaluating-llms-harness skill fit in?

A Claude Code skill is a 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. evaluating-llms-harness is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: research-methods · Last updated: 2026-05-31

Evaluates LLMs across 60+ academic benchmarks (MMLU, HumanEval, GSM8K, TruthfulQA, HellaSwag). Use when benchmarking model quality, comparing models, reporting academic r — from EleutherAI/lm-evaluation-harness

About this skill (catalog notes)

evaluating-llms-harness includes 35 code blocks for direct copy-paste. The SKILL.md runs to about 1,308 words, in the catalog's typical mid-range.

License: MIT
Original author: Orchestra Research
Indexed lastmod: 2026-05-31
Catalog position: Science & Research · research-methods
Indexed related skills: 10

How evaluating-llms-harness fits the catalog

evaluating-llms-harness sits in the Science & Research category under the research-methods 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.

What this skill does

evaluating-llms-harness is a community-contributed Claude Code skill in the research-methods sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lm-evaluation-harness/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The evaluating-llms-harness 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 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/lm-evaluation-harness
curl -L https://claudskills.com/skills/lm-evaluation-harness/SKILL.md \
  -o ~/.claude/skills/lm-evaluation-harness/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/lm-evaluation-harness/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/lm-evaluation-harness/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lm-evaluation-harness\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

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 →

Pro

One-click install via the desktop app

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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the evaluating-llms-harness Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/lm-evaluation-harness/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the evaluating-llms-harness skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the evaluating-llms-harness skill?

Use evaluating-llms-harness when your Claude Code task falls under the Science & Research category — specifically in the research methods area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use evaluating-llms-harness" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the evaluating-llms-harness skill fit in?

A Claude Code skill is a 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. evaluating-llms-harness 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/.

Attribution & license

Source: https://github.com/EleutherAI/lm-evaluation-harness
License: MIT
Author: Orchestra Research

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Orchestra Research. (2026). evaluating-llms-harness [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/lm-evaluation-harness/

BibTeX

@misc{lm-evaluation-harness-2026,
  author    = {Orchestra Research},
  title     = {evaluating-llms-harness [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/lm-evaluation-harness/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/lm-evaluation-harness.svg)](https://claudskills.com/skills/lm-evaluation-harness/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

More Science & Research skills

Browse all Science & Research skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Science & Research skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore