Skillshelf

The best Claude skills for students (all free)

Twelve free Claude skills for studying, writing and labs, built to help you learn rather than do the work for you. What each one does, and what it won't.

· 5 min read

Claude is already good at explaining things. Skills make it reliable at the jobs students do every week: turning notes into study material, planning for an exam, getting feedback on an essay and getting citations right.

These are the twelve skills in the Skillshelf For students collection: what each one does, what it deliberately won't do, and an example of what to ask. They're all free and work on Claude's Free plan. Each skill's page shows a real example of it at work and every file in it before you download.

First, check your class's AI policy

Rules about AI differ by school, by course and even by assignment. Some classes allow it for studying but not for writing; some don't allow it at all. Check the syllabus, or ask your instructor if it isn't clear.

These skills are built to help you learn, not to produce work to hand in. Essay Outline and Essay Feedback won't write your essay, Lab Report won't invent data, and the note skills use only what's in your notes. The work you hand in is still yours to write and check.

Plan your studying

Study Planner

Tell it your exam date, your topics, how much time you have and what you're weakest at. It builds a day-by-day schedule using spaced review and practice tests. It never schedules more hours than you said you have, and if there isn't enough time for everything, it says so and suggests what to cut, starting with the topics worth the least.

Try: "bio final is friday, today is monday. topics: cell respiration, photosynthesis, genetics, evolution. i can do 2 hrs a day and genetics is my worst"

Turn notes into study material

Lecture Notes

Turns messy class notes, a lecture transcript or slide text into organized study notes: headings, key terms and definitions, worked examples, what the instructor stressed, and review questions. It uses only what's in your notes, marks anything cut off as [unclear in notes] instead of guessing, and rechecks any math in them.

Flashcard Maker

Turns notes, textbook passages or slides into question-and-answer and fill-in-the-blank cards, and exports them as a CSV you can import into Anki or Quizlet. Each card is tagged with its topic, so you can study one topic at a time. It aims for about one card per 50–100 words of notes, and asks before making more than 40.

Practice Quiz

Turns your notes or study guide into a practice exam with multiple-choice, true/false, short-answer and applied questions, plus a separate answer key that explains each answer and what to review. There are no trick questions or "all of the above". True/false questions ask you to correct the false statements, so guessing doesn't help.

Try: "make me a practice quiz from my psych notes, 5 questions", followed by your notes.

Summarizer

For readings and articles. It summarizes at the length you choose, from a one-line TL;DR to a section-by-section summary, keeps names, numbers and dates exact, and separates facts from the author's opinions.

Research and writing

Paper Summary

For research papers and abstracts. It covers the research question, the method and sample, the key findings with their exact numbers, and the limitations, plus how the paper could fit into your essay or literature review. The authors' claims and the summary's own assessment are kept visibly apart, so you know which is which.

Essay Outline

Plans an essay from your assignment prompt and your own ideas. You get two or three thesis options and a paragraph-by-paragraph outline with topic sentences, the evidence you still need to find, a counterargument and a conclusion. It doesn't write paragraphs for you or invent sources, and if you haven't picked a side yet, it lays out the main positions without choosing one for you.

Try: "need to outline an essay for english 101: 'Should college athletes be paid? Take a position.' 1000 words, 3 sources", plus what you think so far.

Essay Feedback

Rubric-based feedback on your thesis, argument, evidence, organization, style and citations, with comments tied to specific paragraphs. It doesn't rewrite your essay. It uses your instructor's rubric if you paste it in, and it won't guess a grade unless you ask.

Citation Formatter

Formats your sources in MLA 9, APA 7 or Chicago (18th edition), with the works-cited or reference-list entries and the in-text citations. When a detail is missing, like a date or page range, it leaves a [placeholder] and lists it instead of guessing. It also reminds you to add the hanging indent in your paper.

Try: "can you put these in apa 7", followed by your sources however you have them.

Proofreader

Fixes spelling, grammar and punctuation, and explains each fix in one line so you learn the rule. It doesn't rewrite sentences for style or change your argument. Sentences that are correct but awkward are listed under "Worth a look" for you to decide. It's a good last pass before you hand in an essay or an application.

Labs

Lab Report

Builds a lab report from your own data and notes, with the standard sections, your calculations shown and rechecked, and correct units and significant figures. It never invents data or observations: anything missing becomes a [placeholder] it asks you about. If your own calculation is wrong, it points it out. If your course doesn't allow AI drafting, it gives you the outline and checks instead of a full report.

Money

Budget Planner

Builds a monthly budget from your real take-home pay and bills, compares it with the 50/30/20 guideline, and suggests changes with their dollar effect, checking every total. It won't guess expenses you didn't list, and it doesn't recommend specific banks, cards or loans. For financial aid questions, it points you to your school's financial aid office.

Which to start with

How to install them

Click Download on a skill's page, then upload the .zip on claude.ai under Customize → Skills. It takes about a minute per skill, and Claude uses each one automatically when your request matches. For the full steps, including Claude Code and what to do if an upload fails, see how to install a skill in Claude.

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