Agent skill

Prompt Engine

by AgriciDaniel in AgriciDaniel/claude-prompts

Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram…

MITAuto-check passedAI & LLM Engineering

Install Prompt Engine

skills CLI
$ npx skills add AgriciDaniel/claude-prompts --skill prompt-engine -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install AgriciDaniel/claude-prompts prompt-engine --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/AgriciDaniel/claude-prompts.git skills-src && mkdir -p .claude/skills && cp -r skills-src/prompt-engine .claude/skills/prompt-engine && rm -rf skills-src

Use ~/.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/

Facts

Skill name
prompt-engine
GitHub stars
110
Token cost
~1.2k tokens
SKILL.md length
450 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
MIT

At a glance

Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram…

  • Works in 6 steps: If user provides a search query or asks… → If user wants to create/build a new… → If user has an existing prompt to… → …
  • User says prompt
  • SKILL.md covers Quick Reference, Orchestration Logic, Search Workflow (Default… and Error Handling, plus 5 more sections
  • Calls python3

What it does

Prompt Engine is an agent skill from AgriciDaniel/claude-prompts. Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram, Adobe Firefly, and more). Search, build, enhance, and adapt prompts for image generation, video creation, text, and meta-prompt generators. Use when user says "prompt", "find a prompt", "build a prompt", "enhance my prompt", "adapt this prompt", "prompt library", "image prompt", "video prompt", "midjourney prompt", "flux…

Its SKILL.md is about 1.2k 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 AI & LLM Engineering, covering Prompt engineering, Diffusion and image models and AI video generation. It works with Midjourney, OpenAI, Stable Diffusion and Bash. The repository describes itself as: AI prompt database and builder skill for Claude Code. 2,500+ curated prompts across 19 categories and 17 AI models. The licence is MIT.

When your agent uses it

  • User says prompt
  • Enhance my prompt
  • Adapt this prompt
  • Midjourney prompt

Example prompts

  • “prompt”
  • “find a prompt”
  • “build a prompt”
  • “/prompt-engine”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. If user provides a search query or asks to find/search -> run search workflow below
  2. If user wants to create/build a new prompt -> route to /prompt-build
  3. If user has an existing prompt to improve -> route to /prompt-enhance
  4. If user wants to convert between models -> route to /prompt-adapt
  5. If user wants to browse/explore -> route to /prompt-library
  6. If ambiguous, show the Quick Reference table and ask

What it can do on your machine

Read from SKILL.md and the folder at commit 23e8ff9. 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:

    • python3

    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 Engine loads about 1.2k tokens when it runs. Until then it costs about 173 tokens; SKILL.md has 450 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~173
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

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 AgriciDaniel/claude-prompts at commit 23e8ff9, republished under its MIT licence (© AgriciDaniel). 450 words, ~1,211 tokens.

Download SKILL.mdSave it as .claude/skills/prompt-engine/SKILL.md (or your agent's skills folder).
name
prompt-engine
description
Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram, Adobe Firefly, and more). Search, build, enhance, and adapt prompts for image generation, video creation, text, and meta-prompt generators. Use when user says "prompt", "find a prompt", "build a prompt", "enhance my prompt", "adapt this prompt", "prompt library", "image prompt", "video prompt", "midjourney prompt", "flux prompt", or any AI prompt engineering task. Do NOT use for terminal/CLI prompts, JavaScript prompt() dialogs, user input prompts, or bash prompt customization.

Prompt Engine -- Ultimate AI Prompt Database and Builder

2,500+ curated prompts across 19 categories, 17 AI models, and 4 output types.

Quick Reference

CommandWhat it does
/prompt [query]Search prompts by keyword, category, model, or style
/prompt-buildBuild a custom prompt from scratch with guided workflow
/prompt-enhanceEnhance an existing prompt with pro techniques
/prompt-adaptAdapt a prompt for a different AI model
/prompt-libraryBrowse, filter, and explore the full prompt library

Orchestration Logic

  1. If user provides a search query or asks to find/search -> run search workflow below
  2. If user wants to create/build a new prompt -> route to /prompt-build
  3. If user has an existing prompt to improve -> route to /prompt-enhance
  4. If user wants to convert between models -> route to /prompt-adapt
  5. If user wants to browse/explore -> route to /prompt-library
  6. If ambiguous, show the Quick Reference table and ask

Search Workflow (Default /prompt)

When user provides a search query:

  1. Run the search script:

    bash
    python3 {PROMPT_ENGINE_DIR}/scripts/search_prompts.py "QUERY" [--category CAT] [--model MODEL] [--type TYPE] [--limit N]
  2. Present results as a numbered list with:

    • Prompt text (truncated to 200 chars for preview)
    • Category, model, output type
    • Tags/styles if available
  3. Let user select a prompt to see full details, or refine their search

Error Handling

  • 0 search results: Suggest broadening the query, trying different keywords, or removing filters. Offer to show available categories with --categories.
  • Script fails: Verify Python 3.10+ is available (python3 --version). Check that the database exists at {PROMPT_ENGINE_DIR}/prompts/all_prompts.json.
  • Empty or short prompt input: For /prompt-enhance and /prompt-adapt, ask the user to provide a longer prompt (minimum 30 characters).
Show full SKILL.md (196 more words)Show less

Database Stats

MetricValue
Total prompts2,503
Categories19
AI Models17
Output typesVideo (1,225), Image (1,049), Generator (115), Text (114)
Model coverage78% of prompts have model attribution
Sources11 Airtable databases

Categories

CategoryCountDescription
fashion-editorial473Fashion, editorial, magazine shoots
video-general287Video-specific prompts
general221Multi-purpose prompts
portraits-people198Faces, characters, headshots
landscapes-nature180Mountains, oceans, forests, sunsets
abstract-backgrounds171Gradients, patterns, wallpapers
sci-fi-futuristic135Cyberpunk, robots, space, neon
architecture129Buildings, interiors, cityscapes
logos-icons116Logo design, icon sets, branding
generators115Meta-prompts that create prompts
text114Copywriting, content, storytelling
animated-3d92Pixar, 3D renders, anime
vehicles82Cars, motorcycles, racing
superheroes58Marvel, DC, superhero art
fantasy56Dragons, magic, medieval, mythical
products42Product photography, packshots
animals18Wildlife, pets, creatures
food-drink11Food photography, recipes
print-merchandise5T-shirts, stickers, merch

Models

Top models: Midjourney (981), Leonardo AI (237), Freepik (172), Mystic (166), Flux (137), Any Platform (97), DALL-E (42), Imagen (26), Sora (24), ChatGPT (22).

Data Paths

  • Prompt database: {PROMPT_ENGINE_DIR}/prompts/
  • Master file: {PROMPT_ENGINE_DIR}/prompts/all_prompts.json
  • Per-category: {PROMPT_ENGINE_DIR}/prompts/{category}/prompts.json
  • Stats: {PROMPT_ENGINE_DIR}/prompts/stats.json
  • Search script: {PROMPT_ENGINE_DIR}/scripts/search_prompts.py

Reference Files

  • references/prompt-patterns.md -- Common prompt engineering patterns and structures
  • references/model-guide.md -- Model-specific syntax, features, and best practices

© AgriciDaniel, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in prompt-engine of AgriciDaniel/claude-prompts.

Open the folder on GitHubat commit 23e8ff9

Compare with similar skills

Prompt Engine 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.

Prompt Engine compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Prompt Engine this skillAgriciDaniel/claude-prompts110—~1.2kAutomated safety check: PassMIT
AI Image Prompts SkillLeoYeAI/openclaw-master-skills2.2k—~4.3kAutomated safety check: PassMIT
ImageNexus-JPF/note-companion8703 repos~3.9kAutomated safety check: PassMIT
Glmv Prompt Genzai-org/GLM-skills476—~1.8kAutomated safety check: PassApache-2.0
Gemini Interactions APIAyuilos/Miffan192—~4.6kAutomated safety check: PassAGPL-3.0
Nano Banana Pro Prompts Recommend SkillYouMind-OpenLab/nano-banana-pro-prompts-recommend-skill1.9k1 repos~4.1kAutomated safety check: PassNone

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More from AgriciDaniel/claude-prompts

  • Prompt Adapt

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  • Prompt Enhance

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  • Prompt Library

    AgriciDaniel/claude-prompts

    Browse, filter, and explore a curated library of 2,500+ AI prompts organized by 19 categories, 17 models, and 4 output types.

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    Auto-check passed

Questions about Prompt Engine

What does Prompt Engine do?

Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram…. Prompt Engine is an agent skill from AgriciDaniel/claude-prompts. Ultimate AI prompt database and builder with 2,500+ curated prompts across 19 categories and 17 AI models (Midjourney, Flux, Leonardo AI, DALL-E, Sora, Imagen, Mystic, Stable Diffusion, Ideogram, Adobe Firefly, and more).

When should I use Prompt Engine?

Prompt Engine fits situations like: user says prompt; enhance my prompt; adapt this prompt; midjourney prompt.

How do I install Prompt Engine in Claude Code?

Run `npx skills add AgriciDaniel/claude-prompts --skill prompt-engine -a claude-code`. Or copy the skill folder (prompt-engine in AgriciDaniel/claude-prompts) into .claude/skills/prompt-engine in your project. Claude Code loads it when a task matches its description.

How do I install Prompt Engine in Codex?

Run `npx skills add AgriciDaniel/claude-prompts --skill prompt-engine -a codex`. Or copy the skill folder (prompt-engine in AgriciDaniel/claude-prompts) into .agents/skills/prompt-engine in your project. Codex loads it when a task matches its description.

Can I use Prompt Engine 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 AgriciDaniel/claude-prompts --skill prompt-engine -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-engine, .gemini/skills/prompt-engine, .github/skills/prompt-engine and .opencode/skills/prompt-engine in your project.

What does Prompt Engine need to run?

Going by SKILL.md and its folder, Prompt Engine needs the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Prompt Engine 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 Engine 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 Engine use?

Prompt Engine 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 Engine use?

About 1.2k tokens (SKILL.md is roughly 4.8k 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 Engine?

Skills that share tags, products or a category with Prompt Engine: AI Image Prompts Skill (LeoYeAI/openclaw-master-skills, 2.2k stars), Image (Nexus-JPF/note-companion, 870 stars), Glmv Prompt Gen (zai-org/GLM-skills, 476 stars) and Gemini Interactions API (Ayuilos/Miffan, 192 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Prompt Engine?

AgriciDaniel (a GitHub user) maintains it in AgriciDaniel/claude-prompts, which has 110 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on April 10, 2026.

Source: AgriciDaniel/claude-prompts on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.