Imagen
sanjay3290/ai-skills
Generate images using Google Gemini's image generation capabilities.
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background…
Install Imagegen
$ npx skills add nexus-research-lab/nexus --skill imagegen -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install nexus-research-lab/nexus imagegen --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/nexus-research-lab/nexus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/imagegen .claude/skills/imagegen && 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 "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .claude/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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/nexus-research-lab/nexus/tree/main/skills/imagegenType 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 nexus-research-lab/nexus --skill imagegen -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install nexus-research-lab/nexus imagegen --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexus-research-lab/nexus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/imagegen .agents/skills/imagegen && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .agents/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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 nexus-research-lab/nexus --skill imagegen -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install nexus-research-lab/nexus imagegen --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexus-research-lab/nexus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/imagegen .cursor/skills/imagegen && 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 "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .cursor/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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/nexus-research-lab/nexus.git --path skills/imagegen--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 nexus-research-lab/nexus --skill imagegen -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install nexus-research-lab/nexus imagegen --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexus-research-lab/nexus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/imagegen .gemini/skills/imagegen && 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 "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .gemini/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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 nexus-research-lab/nexus imagegenInstalls 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 nexus-research-lab/nexus --skill imagegen -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/nexus-research-lab/nexus.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/imagegen .github/skills/imagegen && 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 "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .github/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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 nexus-research-lab/nexus --skill imagegen -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install nexus-research-lab/nexus imagegen --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/nexus-research-lab/nexus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/imagegen .opencode/skills/imagegen && 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 "imagegen" agent skill from https://github.com/nexus-research-lab/nexus/tree/main/skills/imagegen into .opencode/skills/imagegen/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "imagegen", 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
imagegen- GitHub stars
- 151
- Token cost
- ~600 tokens
- SKILL.md length
- 96 words
- Files
- 4 (incl. scripts, references)
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background…
- The result should be an image asset rather than repo-native SVG
- SKILL.md covers 快路径, 判断, 生成 and 编辑, plus 2 more sections
- Runs Python scripts from its folder
- Tasks that involve Image generation
What it does
Imagegen is an agent skill from nexus-research-lab/nexus. Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background cutouts. Use when the result should be an image asset rather than repo-native SVG, HTML/CSS, or canvas.
Its SKILL.md is about 600 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/prompting.md`, `references/sample-prompts.md` and `scripts/remove_chroma_key.py`).
It sits in Media & Creative, covering Image generation and UI design. The repository describes itself as: Multi-agent collaboration platform for persistent, proactive AI agents across rooms, workspaces, skills, and external services. The licence is Apache-2.0.
When your agent uses it
- The result should be an image asset rather than repo-native SVG
- Tasks that involve Image generation
- Tasks that involve UI design
Example prompts
- “/imagegen”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 67f54e7. 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
Ships 1 file in scripts/ (Python), which the agent can run.
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
Imagegen loads about 600 tokens when it runs, and up to ~3.5k if it reads all its reference files. Until then it costs about 77 tokens; SKILL.md has 96 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); the scripts in this folder are not scanned.
SKILL.md
The full file from nexus-research-lab/nexus at commit 67f54e7, republished under its Apache-2.0 licence (© nexus-research-lab). 96 words, ~600 tokens.
Download SKILL.mdSave it as
.claude/skills/imagegen/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- imagegen
- description
- Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background cutouts. Use when the result should be an image asset rather than repo-native SVG, HTML/CSS, or canvas.
- title
- Image Generation
- scope
- any
- tags
- image, asset, generation, design
Image Generation Skill
为当前 workspace 生成或编辑位图资产。只使用 nexus.generate_image 与 nexus.edit_image；Provider、鉴权、接口兼容和响应解析全部由 Go 服务负责。
快路径
普通单图生成必须走内置工具快路径。
- 调用
generate_image，不要调用 Bash。 - 不读取 references。
- 不创建 prompt 文件。
- 不读取输出图片。
- 不做目录探测。
- 不使用 Write、Read、LS、Glob、TaskOutput。
- 不主动用 high quality。
工具入参模板：
{
"prompt": "A concise production prompt",
"size": "1024x1024",
"quality": "low",
"output_format": "png",
"file_name": "stable-name"
}如果用户明确要横幅、封面或宽图，使用 size=1792x1024，仍保持 quality=low。如果图片服务返回 429/过载，最多再调用 1 次工具，降低尺寸或保持 low 重试。
工具返回的 item.path 和 item.markdown 是结果真相源。不要打开生成后的 PNG/JPG/WebP 文件验证，这会把二进制或 base64 塞回上下文。
不要在工具入参里选择 Provider 或模型，让 Settings 里的默认生图模型决定。用户需要切换默认生图模型时，使用 nexus-configuration；当前 authority 不允许时，引导用户到 Settings 或主智能体完成。
判断
- 没有输入图片：默认
generate。 - 用户要求改图、局部替换、合成、mask：使用
edit。 - 用户提供图片只是做风格或构图参考：仍使用
generate，除非明确要求编辑原图。 - 多个不同资产使用多次
generate_image调用，每个资产一条 prompt；不要把多资产塞进一个 prompt。 - 需求更适合 SVG、HTML/CSS、Canvas 或现有矢量源时，不用本 skill。
生成
把用户描述整理成一条不超过 600 字符的 prompt。用户描述已经具体时不要读取任何 reference。
{
"prompt": "Nexus AI assistant promotional banner, futuristic dark blue background, glowing neural network core, large clean NEXUS text, premium technology style",
"size": "1024x1024",
"quality": "low",
"output_format": "png",
"file_name": "nexus-promo-banner"
}编辑
{
"image_path": "input.png",
"mask_path": "mask.png",
"prompt": "Make this black and white",
"output_format": "png",
"file_name": "edited-image"
}调用 edit_image；image_path 和 mask_path 使用 workspace 相对路径。只有路径不明确时才做一次必要的文件查找。
回复
最终回复保持极简，只给工具返回的 markdown 和路径。不要输出尺寸、大小、配色说明、过程说明或下一步建议，除非用户明确询问。
已生成：`output/imagegen/nexus-promo-banner.png`
复杂任务参考
普通单图生成不要读取 references。只有复杂多资产、透明背景、强文字约束或编辑失败排查时再打开对应文件：
references/prompting.mdreferences/sample-prompts.mdscripts/remove_chroma_key.py
© nexus-research-lab, Apache-2.0. 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 3 other files (scripts, references) in skills/imagegen of nexus-research-lab/nexus.
- SKILL.md
- references/prompting.md
- references/sample-prompts.md
- scripts/remove_chroma_key.py
Open the folder on GitHubat commit 67f54e7
Compare with similar skills
Imagegen 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 |
|---|---|---|---|---|---|---|
| Imagegen this skillnexus-research-lab/nexus | 151 | — | ~600 | Automated safety check: Pass | Apache-2.0 | |
| Imagensanjay3290/ai-skills | 432 | 6 repos | ~657 | Automated safety check: Pass | Apache-2.0 | |
| Sf Diagram NanobananaproJaganpro/sf-skills | 424 | — | ~1.6k | Automated safety check: Pass | MIT | |
| Image PromptingBlockRunAI/blockrun-mcp | 391 | — | ~3.6k | Automated safety check: Pass | MIT | |
| Imagegennexu-io/open-design | 100k | — | ~300 | Automated safety check: Pass | Apache-2.0 | |
| Imagennexu-io/open-design | 100k | — | ~279 | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Imagegen
What does Imagegen do?
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background…. Imagegen is an agent skill from nexus-research-lab/nexus. Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, UI mockups, product shots, or transparent-background cutouts.
When should I use Imagegen?
Imagegen fits situations like: the result should be an image asset rather than repo-native SVG; tasks that involve Image generation; tasks that involve UI design.
How do I install Imagegen in Claude Code?
Run `npx skills add nexus-research-lab/nexus --skill imagegen -a claude-code`. Or copy the skill folder (skills/imagegen in nexus-research-lab/nexus) into .claude/skills/imagegen in your project. Claude Code loads it when a task matches its description.
How do I install Imagegen in Codex?
Run `npx skills add nexus-research-lab/nexus --skill imagegen -a codex`. Or copy the skill folder (skills/imagegen in nexus-research-lab/nexus) into .agents/skills/imagegen in your project. Codex loads it when a task matches its description.
Can I use Imagegen 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 nexus-research-lab/nexus --skill imagegen -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/imagegen, .gemini/skills/imagegen, .github/skills/imagegen and .opencode/skills/imagegen in your project.
What does Imagegen need to run?
Going by SKILL.md and its folder, Imagegen needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Imagegen 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 Imagegen 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Imagegen use?
Imagegen is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Imagegen use?
About 600 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.9k tokens, read only when the agent opens those files.
What are the alternatives to Imagegen?
Skills that share tags, products or a category with Imagegen: Imagen (sanjay3290/ai-skills, 432 stars), Sf Diagram Nanobananapro (Jaganpro/sf-skills, 424 stars), Image Prompting (BlockRunAI/blockrun-mcp, 391 stars) and Imagegen (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Imagegen?
nexus-research-lab (a GitHub organization) maintains it in nexus-research-lab/nexus, which has 151 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 10, 2026.
Source: nexus-research-lab/nexus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.