Claude Skills vs Cursor Rules: What Is the Difference?

The Short Answer: Rules Are Local Guidance, Skills Are Portable Workflows

Search intent for cursor rules vs claude skills is informational and comparative. The reader usually already knows that both features save instructions for AI coding work. The real question is where a valuable instruction should live so it stays useful without becoming another stale copy.

Cursor Rules are excellent for guiding Cursor's Agent and Inline Edit behavior inside a repo or a personal Cursor setup. Claude Skills are better when the workflow needs a reusable folder, a clear trigger, supporting files, examples, and a life outside one editor.

Use Cursor Rules to teach Cursor about this project; use Claude Skills to preserve how you do recurring work.

Claude Skills vs Cursor Rules at a Glance

Both systems are useful because models do not reliably remember your preferences between tasks. The distinction is scope. Cursor Rules are a strong project instruction layer. Claude Skills are a reusable workflow layer.

What Cursor Rules Do Well

Cursor Rules control how Cursor's AI features behave by adding persistent instructions to model context. According to Cursor's documentation, Project Rules live in .cursor/rules, are version-controlled, and can be scoped to a codebase or file patterns. Cursor also supports User Rules in settings and AGENTS.md for simpler project instructions.

That makes Cursor Rules a strong fit for repo-specific guidance: architecture boundaries, naming conventions, where tests live, which commands to run, how a package is organized, and which files should be treated carefully. If the rule is only true inside this repository, it probably belongs close to this repository.

Cursor Rules are project memory for Cursor. They are not automatically a team-wide skill system or a cross-agent workflow library.

The official rule types also matter. An "Always" rule is good for short project-wide constraints. An auto-attached rule is good for file patterns. An agent-requested rule needs a description so the AI can decide when to use it. A manual rule is useful when the human wants explicit control with a named rule.

What Claude Skills Do Well

A Claude Skill is a reusable instruction package. It usually starts with a SKILL.md file that explains when the skill should be used and how the agent should complete the workflow. A skill can also include examples, templates, scripts, or supporting documents when the workflow needs more than one Markdown file.

Skills are strongest when the instruction should outlive the editor where it was created. A code review rubric, release checklist, support escalation workflow, research synthesis method, or content brief process should not disappear because you are not currently using Cursor.

Prompttly is a skill manager for AI agents - one library for your skills and prompts that syncs into Claude Code, Codex, ChatGPT, and Claude, so your setup follows you across every machine, repo, and tool.

That solves the real failure mode: people build powerful prompts and rules, then lose them in the wrong place. The best rule stays on the old laptop. The improved workflow lives in one repo. A teammate copies an older version. The next agent never sees it. Skills give the workflow a portable home.

Choose by the Failure Mode

The practical decision is not "which product is better?" It is "what goes wrong if this instruction stays where it is?"

1. Use Cursor Rules when the agent needs local repo context: Put project architecture, test commands, file patterns, package conventions, and safety notes in .cursor/rules or AGENTS.md.
2. Use Claude Skills when the workflow repeats across places: Put review methods, migration checks, launch writing processes, research frameworks, and support workflows in skills.
3. Use both when a portable process needs repo facts: A code review skill can define the method, while Cursor Rules tell Cursor which test command and package boundaries apply in this repo.
4. Use a normal prompt while the workflow is still changing: Do not turn every experiment into a rule or a skill. Promote only the instructions that prove durable.

If you are comparing this with broader instruction files, read SKILL.md vs CLAUDE.md vs AGENTS.md. If the question is whether the workflow should be a skill at all, start with skills vs prompts.

Before and After: Cleaning Up Copied Cursor Rules

Imagine a team has a strong pull request review rule in Cursor. It tells the agent to inspect behavior risk first, look for missing tests, check migrations, avoid unrelated refactors, and return findings by severity. It works, so the team copies it into five repos.

Three months later, the rule has drifted. The frontend repo has the newest accessibility checks. The backend repo has the better migration language. A teammate added security checks in their personal Cursor setup. Codex and Claude Code never see the latest version.

Example: Convert a Cursor Rule Into a Claude Skill

A Cursor Project Rule might start like this:

---
description: Use for pull request reviews in this repo
globs: "**/*"
alwaysApply: false
---

- Review behavior risk before style.
- Run npm test for frontend changes.
- Check auth and billing boundaries before suggesting edits.
- Return findings by severity with file references.

Some of that belongs in Cursor. The test command and auth/billing boundaries are repo facts. The review method is reusable. Extract the portable part into a skill:

---
name: behavior-first-code-review
description: Use when reviewing code changes for behavior risk, missing tests, migration problems, security boundaries, and release impact.
---

Review behavior before style.
Inspect changed files, related tests, migrations, permissions, and user-facing workflows.
Return findings ordered by severity.
For each finding, include the affected file, concrete risk, and a minimal reproduction or failure condition.
Do not suggest unrelated refactors unless they block the requested change.

Then keep a short Cursor Rule that says which local commands and boundaries apply in this repo:

---
description: Repo verification rules for frontend changes
globs: "website/**/*"
alwaysApply: false
---

- Use the behavior-first-code-review skill for review method.
- Run npm test from the website directory when frontend behavior changes.
- Treat billing, auth, and deployment settings as restricted unless requested.

The skill now carries the method. Cursor keeps the repo-specific operating notes. That separation prevents the same workflow from being trapped in one editor or duplicated across several repositories.

When Not to Use Each

Do not use a Claude Skill for tiny project facts. A rule like "this repo uses pnpm" or "database migrations live in packages/db" belongs in project guidance, not in a global skill.

Do not use Cursor Rules as your only home for a workflow that should travel. If a code review process, content QA checklist, or customer research method should also work in Claude Code, Codex, ChatGPT, or Claude, storing it only in Cursor creates a portability problem.

Do not use either when the instruction is unproven. Test rough ideas in chat first. A weak rule or weak skill just makes bad behavior more persistent.

A Practical Migration Checklist

1. List repeated Cursor Rules: Find rules that describe a process rather than a repo fact.
2. Separate portable workflow from local context: Keep commands, paths, and repo boundaries in Cursor. Move general steps and quality checks into a skill.
3. Add a use condition: A skill needs a clear description of when an agent should load it.
4. Add examples: Include weak and strong outputs, templates, or references when the workflow has judgment calls.
5. Version the skill: Keep history so teammates can see what changed and recover a prior workflow.
6. Link back from repo rules: Let Cursor Rules point to the skill conceptually, while the skill stays the canonical process.

If the skill needs more than one file, read SKILL.md explained for the entrypoint pattern. To draft the first version quickly, use the free Claude Skill Creator.

People Also Ask About Claude Skills and Cursor Rules

Where to Go Next

Browse the resources hub for the full skills series. Start with what Claude Skills are for the foundation, then compare adjacent instruction systems in SKILL.md vs CLAUDE.md vs AGENTS.md, Claude Skills vs custom GPTs, and Claude Skills vs MCP. For the official Cursor side, review Cursor's Rules documentation.