Prompt Improver
severity1/claude-code-prompt-improver
This skill enriches vague prompts with targeted research and clarification before execution.
Advanced expert in prompt engineering, custom instructions design, and prompt optimization for AI agents
Install Prompt Engineering Expert
$ npx skills add CraftOS-dev/CraftBot --skill prompt-engineering-expert -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install CraftOS-dev/CraftBot prompt-engineering-expert --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/CraftOS-dev/CraftBot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/prompt-engineering-expert .claude/skills/prompt-engineering-expert && 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 "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .claude/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expertType 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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install CraftOS-dev/CraftBot prompt-engineering-expert --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/prompt-engineering-expert .agents/skills/prompt-engineering-expert && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .agents/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install CraftOS-dev/CraftBot prompt-engineering-expert --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/prompt-engineering-expert .cursor/skills/prompt-engineering-expert && 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 "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .cursor/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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/CraftOS-dev/CraftBot.git --path skills/prompt-engineering-expert--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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install CraftOS-dev/CraftBot prompt-engineering-expert --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/prompt-engineering-expert .gemini/skills/prompt-engineering-expert && 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 "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .gemini/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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 CraftOS-dev/CraftBot prompt-engineering-expertInstalls 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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/prompt-engineering-expert .github/skills/prompt-engineering-expert && 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 "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .github/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install CraftOS-dev/CraftBot prompt-engineering-expert --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CraftOS-dev/CraftBot.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/prompt-engineering-expert .opencode/skills/prompt-engineering-expert && 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 "prompt-engineering-expert" agent skill from https://github.com/CraftOS-dev/CraftBot/tree/main/skills/prompt-engineering-expert into .opencode/skills/prompt-engineering-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prompt-engineering-expert", 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
prompt-engineering-expert- GitHub stars
- 392
- Used in
- 4 other repos
- Token cost
- ~404 tokens
- SKILL.md length
- 168 words
- Files
- 13
- Skills in repo
- 89
- Repo updated
- First seen
- Licence
- MIT
At a glance
Advanced expert in prompt engineering, custom instructions design, and prompt optimization for AI agents
- Tasks that involve Prompt engineering
- SKILL.md covers Capabilities and Use Cases
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Prompt Engineering Expert is an agent skill from CraftOS-dev/CraftBot. Advanced expert in prompt engineering, custom instructions design, and prompt optimization for AI agents
Its SKILL.md is about 400 tokens, which your agent loads only when the skill is triggered. The skill folder holds 15 other files (for example `.clawhub/origin.json`, `CLAUDE.md` and `GETTING_STARTED.md`).
It sits in AI & LLM Engineering, covering Prompt engineering. The repository describes itself as: One agent. Every kind of work. The licence is MIT.
When your agent uses it
- Tasks that involve Prompt engineering
Example prompts
- “/prompt-engineering-expert”
What it can do on your machine
Read from SKILL.md and the folder at commit b50970c. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Prompt Engineering Expert loads about 404 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 168 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
The full file from CraftOS-dev/CraftBot at commit b50970c, republished under its MIT licence (© CraftOS-dev). 168 words, ~404 tokens.
Download SKILL.mdSave it as
.claude/skills/prompt-engineering-expert/SKILL.md (or your agent's skills folder). This skill also uses 12 other files; get the full folder from GitHub.- name
- prompt-engineering-expert
- description
- Advanced expert in prompt engineering, custom instructions design, and prompt optimization for AI agents
Prompt Engineering Expert Skill
This skill equips Claude with deep expertise in prompt engineering, custom instructions design, and prompt optimization. It provides comprehensive guidance on crafting effective AI prompts, designing agent instructions, and iteratively improving prompt performance.
Capabilities
- Prompt Writing Best Practices: Expert guidance on clear, direct prompts with proper structure and formatting
- Custom Instructions Design: Creating effective system prompts and custom instructions for AI agents
- Prompt Optimization: Analyzing, refining, and improving existing prompts for better performance
- Advanced Techniques: Chain-of-thought prompting, few-shot examples, XML tags, role-based prompting
- Evaluation & Testing: Developing test cases and success criteria for prompt evaluation
- Anti-patterns Recognition: Identifying and correcting common prompt engineering mistakes
- Context Management: Optimizing token usage and context window management
- Multimodal Prompting: Guidance on vision, embeddings, and file-based prompts
Use Cases
- Refining vague or ineffective prompts
- Creating specialized system prompts for specific domains
- Designing custom instructions for AI agents and skills
- Optimizing prompts for consistency and reliability
- Teaching prompt engineering best practices
- Debugging prompt performance issues
- Creating prompt templates for reusable workflows
© CraftOS-dev, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 12 other files in skills/prompt-engineering-expert of CraftOS-dev/CraftBot.
- SKILL.md
- .clawhub/origin.json
- CLAUDE.md
- GETTING_STARTED.md
- INDEX.md
- README.md
- START_HERE.md
- SUMMARY.md
- _meta.json
- docs/BEST_PRACTICES.md
- docs/TECHNIQUES.md
- docs/TROUBLESHOOTING.md
- examples/EXAMPLES.md
Open the folder on GitHubat commit b50970c
Used in 4 other repositories
We found 4 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 4 other GitHub owners. This page covers the copy in CraftOS-dev/CraftBot, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Prompt Engineering Expert 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 |
|---|---|---|---|---|---|---|
| Prompt Engineering Expert this skillCraftOS-dev/CraftBot | 392 | 4 repos | ~404 | Automated safety check: Pass | MIT | |
| Prompt Improverseverity1/claude-code-prompt-improver | 1.9k | 2 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Prompt Engineering Patternsynulihao/AgentSkillOS | 617 | 15 repos | ~1.7k | Automated safety check: Pass | None | |
| Patch CreationPiebald-AI/tweakcc | 2.5k | — | ~1.6k | Automated safety check: Pass | MIT | |
| LLM Application DevMoizIbnYousaf/ai-agent-skills | 1.1k | 2 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Senior Prompt Engineermaslennikov-ig/claude-code-orchestrator-kit | 260 | 4 repos | ~1.4k | Automated safety check: Pass | Custom licence |
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Prompt Engineering Patterns
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LLM Application Dev
MoizIbnYousaf/ai-agent-skills
Building applications with Large Language Models - prompt engineering, RAG patterns, and LLM integration.
Senior Prompt Engineer
maslennikov-ig/claude-code-orchestrator-kit
Provides reference guides and Python scripts for prompt optimization, RAG evaluation, and agent orchestration when building or tuning LLM systems.
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Categories
Questions about Prompt Engineering Expert
What does Prompt Engineering Expert do?
Advanced expert in prompt engineering, custom instructions design, and prompt optimization for AI agents. Prompt Engineering Expert is an agent skill from CraftOS-dev/CraftBot.
When should I use Prompt Engineering Expert?
Prompt Engineering Expert fits situations like: tasks that involve Prompt engineering.
How do I install Prompt Engineering Expert in Claude Code?
Run `npx skills add CraftOS-dev/CraftBot --skill prompt-engineering-expert -a claude-code`. Or copy the skill folder (skills/prompt-engineering-expert in CraftOS-dev/CraftBot) into .claude/skills/prompt-engineering-expert in your project. Claude Code loads it when a task matches its description.
How do I install Prompt Engineering Expert in Codex?
Run `npx skills add CraftOS-dev/CraftBot --skill prompt-engineering-expert -a codex`. Or copy the skill folder (skills/prompt-engineering-expert in CraftOS-dev/CraftBot) into .agents/skills/prompt-engineering-expert in your project. Codex loads it when a task matches its description.
Can I use Prompt Engineering Expert 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 CraftOS-dev/CraftBot --skill prompt-engineering-expert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/prompt-engineering-expert, .gemini/skills/prompt-engineering-expert, .github/skills/prompt-engineering-expert and .opencode/skills/prompt-engineering-expert in your project.
What does Prompt Engineering Expert need to run?
SKILL.md names no scripts, command-line tools or credentials: Prompt Engineering Expert is instructions for the agent only.
Does Prompt Engineering Expert 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 Prompt Engineering Expert 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 Prompt Engineering Expert use?
Prompt Engineering Expert is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Prompt Engineering Expert use?
About 404 tokens (SKILL.md is roughly 1.6k 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 Prompt Engineering Expert?
Skills that share tags, products or a category with Prompt Engineering Expert: Prompt Improver (severity1/claude-code-prompt-improver, 1.9k stars), Prompt Engineering Patterns (ynulihao/AgentSkillOS, 617 stars), Patch Creation (Piebald-AI/tweakcc, 2.5k stars) and LLM Application Dev (MoizIbnYousaf/ai-agent-skills, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Prompt Engineering Expert?
CraftOS-dev (a GitHub user) maintains it in CraftOS-dev/CraftBot, which has 392 GitHub stars. The repository holds 89 skills in this directory. The repository was last updated on October 7, 2026.
Source: CraftOS-dev/CraftBot on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.