Hypothesis Generation
spacering-net/codeg
Structured hypothesis formulation from observations. An agent skill from spacering-net/codeg.
Runs a six-phase research workflow that turns unfamiliar domains, source bundles, or collected material into publish-ready output.
Install Learn
$ npx skills add ninehills/skills --skill learn -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ninehills/skills learn --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/learn .claude/skills/learn && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .claude/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ninehills/skills/tree/main/learnType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ninehills/skills --skill learn -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ninehills/skills learn --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/learn .agents/skills/learn && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .agents/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ninehills/skills --skill learn -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ninehills/skills learn --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/learn .cursor/skills/learn && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .cursor/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ninehills/skills.git --path learn--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ninehills/skills --skill learn -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ninehills/skills learn --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/learn .gemini/skills/learn && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .gemini/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ninehills/skills learnInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ninehills/skills --skill learn -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/learn .github/skills/learn && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .github/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ninehills/skills --skill learn -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ninehills/skills learn --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ninehills/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/learn .opencode/skills/learn && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "learn" agent skill from https://github.com/ninehills/skills/tree/main/learn into .opencode/skills/learn/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "learn", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
learn- GitHub stars
- 280
- Token cost
- ~2.5k tokens
- SKILL.md length
- 1,431 words
- Files
- 1
- Skills in repo
- 38
- Repo updated
- First seen
- Licence
- None found
At a glance
Runs a six-phase research workflow that turns unfamiliar domains, source bundles, or collected material into publish-ready output.
- Works in 6 steps: Collect → Digest → Outline → …
- Users ask in any language to research
- SKILL.md covers Outcome Contract, Pre-check, Choose Mode and Canonical Article Mode, plus 7 more sections
- Calls bash
What it does
Learn is an agent skill from ninehills/skills. Runs a six-phase research workflow that turns unfamiliar domains, source bundles, or collected material into publish-ready output. Use when users ask in any language to research, study, deep-dive, compile sources, synthesize unfamiliar material, or turn a source bundle into a coherent reference. Not for quick lookups or single-file reads.
Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Research & Science.
When your agent uses it
- Users ask in any language to research
- Compile sources
- Synthesize unfamiliar material
- Turn a source bundle into a coherent reference
Example prompts
- “/learn”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Collect
- Digest
- Outline
- Fill In
- Refine
- Self-review and Publish Readiness
What it can do on your machine
Read from SKILL.md and the folder at commit f3e82a7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
bash
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Learn loads about 2.5k tokens when it runs. Until then it costs about 87 tokens; SKILL.md has 1,431 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 1,431 words (~2,514 tokens).
“Prefix your first line with 🥷 inline, not as its own paragraph.”
- name
- learn
- when_to_use
- 学习一下, 深入研究, 研究一下, 整理成文章, 把这批材料整理, 一站式参考, 一篇就够, 整理成长文, research, deep dive, help me understand, compile sources, unfamiliar domain
- dispatch_intent
- Deep research, unfamiliar domain, compile sources into output
Files
Just SKILL.md in learn of ninehills/skills.
Open the folder on GitHubat commit f3e82a7
Compare with similar skills
Learn next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Learn this skillninehills/skills | 280 | — | ~2.5k | Automated safety check: Pass | None | |
| Hypothesis Generationspacering-net/codeg | 3.9k | 14 repos | ~3.6k | Automated safety check: Notes | MIT | |
| GitHub Deep Researchbytedance/deer-flow | 84k | 4 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Nature Paper CardYuan1z0825/nature-skills | 47k | 2 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| Content Research Writerweapp-tailwindcss/weapp-tailwindcss | 1.9k | 25 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Peer Reviewspacering-net/codeg | 3.9k | 17 repos | ~5.9k | Automated safety check: Notes | MIT |
Similar skills
GitHub Deep Research
bytedance/deer-flow
Researches a GitHub repository over four rounds using the GitHub API and web search, then writes a structured markdown report with timeline, metrics and Mermaid diagrams.
Nature Paper Card
Yuan1z0825/nature-skills
Builds a structured deep-reading card for one scientific paper, covering methods, how experiments support claims, limitations and research ideas, with a script to prepare the source.
Content Research Writer
weapp-tailwindcss/weapp-tailwindcss
Assists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on each section.
Peer Review
spacering-net/codeg
Structured manuscript/grant review with checklist-based evaluation.
Last30days
mvanhorn/last30days-skill
Research what people actually say about any topic in the last 30 days.
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Related
Categories
Questions about Learn
What does Learn do?
Runs a six-phase research workflow that turns unfamiliar domains, source bundles, or collected material into publish-ready output. Learn is an agent skill from ninehills/skills. Runs a six-phase research workflow that turns unfamiliar domains, source bundles, or collected material into publish-ready output.
When should I use Learn?
Learn fits situations like: users ask in any language to research; compile sources; synthesize unfamiliar material; turn a source bundle into a coherent reference.
How do I install Learn in Claude Code?
Run `npx skills add ninehills/skills --skill learn -a claude-code`. Or copy the skill folder (learn in ninehills/skills) into .claude/skills/learn in your project. Claude Code loads it when a task matches its description.
How do I install Learn in Codex?
Run `npx skills add ninehills/skills --skill learn -a codex`. Or copy the skill folder (learn in ninehills/skills) into .agents/skills/learn in your project. Codex loads it when a task matches its description.
Can I use Learn in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ninehills/skills --skill learn -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/learn, .gemini/skills/learn, .github/skills/learn and .opencode/skills/learn in your project.
What does Learn need to run?
Going by SKILL.md and its folder, Learn needs the command-line tools its instructions call (bash).
Does Learn access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Learn safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Learn use?
No licence was found for Learn or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Learn use?
About 2.5k tokens (SKILL.md is roughly 10k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Learn?
Skills that share tags, products or a category with Learn: Hypothesis Generation (spacering-net/codeg, 3.9k stars), GitHub Deep Research (bytedance/deer-flow, 84k stars), Nature Paper Card (Yuan1z0825/nature-skills, 47k stars) and Content Research Writer (weapp-tailwindcss/weapp-tailwindcss, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Learn?
ninehills (a GitHub user) maintains it in ninehills/skills, which has 280 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on June 22, 2026.
Source: ninehills/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.