Automated summary
Creates or updates a Claude Code skill by converting the current conversation into a SKILL.md file with appropriate frontmatter and rules.
Strengths
- Encourages concise, behavior-focused skill files
- Provides clear frontmatter guidance
- Differentiates create vs update modes explicitly
- Emphasizes token cost efficiency
Limitations
- Claude Code-specific, not portable to other tools
- Requires manual judgment for mode and frontmatter
- No automated validation of the generated SKILL.md
When you need to persist a new reusable behavior or update an existing skill while working in Claude Code.
When the skill is already fully written or when you are only discussing code without changing skill definitions.
Security analysis
CautionThe skill instructs the AI to create directories and write files, which are powerful operations but legitimate for the purpose of managing skill files. It does not contain destructive or exfiltrating commands.
- •Uses file system operations (mkdir, write) which could be misused if arguments are untrusted.
Examples
Create a skill named code-review-checklist with guidelines for reviewing pull requests.Update the skill typescript-error-fixes with the new rule about null checks.Add a new rule to existing skill commit-message about conventional commits.Create or update a skill based on the current conversation.
The first word of $ARGUMENTS is the skill name (kebab-case). The rest is an optional note about what to add or change.
Step 1 — Detect mode
Check whether .claude/skills/$0/SKILL.md already exists.
- Exists → update mode: read the current file, then go to Step 3.
- Does not exist → create mode: go to Step 2.
Step 2 — Determine frontmatter (create only)
Decide the correct frontmatter based on what the skill does:
description — one sentence: what the skill does + when Claude should auto-load it. Put the key trigger phrase first (budget is 1,536 chars).
paths — set only if the skill is scoped to specific files. Use glob patterns:
- Design system / theme work →
@soroush.tech/design-system/** - All TypeScript →
**/*.ts,**/*.tsx - Omit for project-wide knowledge
argument-hint — short label shown in autocomplete, e.g. [filename] or [component-name].
disable-model-invocation: true — add only if this is a manual workflow with side effects (deploy, commit, send). Reference knowledge should NOT have this.
user-invocable: false — add only if users should never call it directly (pure background context).
Step 3 — Write content
Rules for skill content:
- Reference skills (conventions, patterns, style guides): state the rule + one ✗/✓ code pair. No prose explaining why — the example shows it.
- Task skills (step-by-step actions): numbered steps, imperative verbs, no explanation.
- Keep SKILL.md under 500 lines.
- Every line is a recurring token cost — cut anything that doesn't change Claude's behavior.
- End with:
If $ARGUMENTS names a file, read it and apply the rules. Otherwise apply to the code being discussed.(for reference skills only).
Update mode: add the new rule or change to the appropriate section. Do not touch unrelated rules. Remove any rule made obsolete by the change.
Step 4 — Write the file
For create: run mkdir -p .claude/skills/$0 then write .claude/skills/$0/SKILL.md.
For update: write the updated .claude/skills/$0/SKILL.md.
Confirm what was created or changed. If a new paths scope was set, mention which files will trigger it.
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/create-or-update-claude-code-skill-msih95pz/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/create-or-update-claude-code-skill-msih95pz' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/create-or-update-claude-code-skill-msih95pz/download' --output '.skill-downloads/create-or-update-claude-code-skill-msih95pz/SKILL.md.part' && mv '.skill-downloads/create-or-update-claude-code-skill-msih95pz/SKILL.md.part' '.skill-downloads/create-or-update-claude-code-skill-msih95pz/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
This file does not provide a usable name/description header for this native procedure. It remains available to download and inspect; use the manual method below.
Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/create-or-update-claude-code-skill-msih95pz/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
React Hook Form Best Practices
Development
Master React Hook Form: avoid anti-patterns, manage subscriptions, and handle reset, dirty state, and controlled inputs correctly.
Emotion to Mantine Migration
Development
Migrate Emotion styled-components to Mantine components with style props and CSS modules. Use when converting .styled.tsx files or removing @emotion imports.
Scope Creep Detector
Development
Analyzes git diffs against a stated intent to detect scope creep, unrelated files, broad PRs, and oversized changes, then suggests keep, split, or justify actions.