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image-gen

image-gen is a skill for Claude Code from nicknisi/claude-plugins. It costs 67 tokens per session (496 once invoked), scanned A, original, MIT.

A tool for generating new images or editing existing ones with Google Gemini or OpenAI image models.

In plain words
What is it for?
Use it to make illustrations, diagrams, other visual imagery, text-heavy graphics, or edited versions of supplied images.
Why use it?
It gives coding agents a defined way to create visual assets or change images, including edits that need accurate text or masked areas.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the image-gen plugin — 1 skill shipped together

not rated 114repo 2mo ago A scan 67 tokens original MIT

Good fit Use it to make illustrations, diagrams, other visual imagery, text-heavy graphics, or edited versions of supplied images.

Compare 6 skills from other repositories ↓
View source ↗ nicknisi/claude-plugins
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add nicknisi/claude-plugins
Claude Code
/plugin install image-gen

Made for: Claude Code.

Or install image-gen, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for image-gen

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicknisi/claude-plugins/image-gen/github.svg)](https://agentmods.dev/skills/nicknisi/claude-plugins/image-gen)
Your own site
<a href="https://agentmods.dev/skills/nicknisi/claude-plugins/image-gen"><img src="https://agentmods.dev/badge/skills/nicknisi/claude-plugins/image-gen/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for image-gen

Your own site · 80×15
<a href="https://agentmods.dev/skills/nicknisi/claude-plugins/image-gen"><img src="https://agentmods.dev/badge/skills/nicknisi/claude-plugins/image-gen.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 496 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.00496
Opus 5.5 $0.00027 $0.00198
Sonnet 5.5 $0.00013 $0.00099
Haiku 4.5 $0.00007 $0.00050

Measured 2mo ago against content hash c8ec853977fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

image-gen scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (dist/generate_image.js, scripts/generate_image.ts), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/image-gen/skills/image-gen/SKILL.md · 51 lines

What it actually says

Image Generation & Editing

Multi-provider image generation. Default provider is Gemini (nano-banana-pro); pass --provider openai to use gpt-image-2.

Which provider to pick

  • Gemini (default): general illustrations, quick diagrams, visual imagery. Accepts --input-image repeatedly for multi-image composition.
  • OpenAI: anything where text rendering matters (infographics, slide-like images, dense-label diagrams, logos with text), or when you need masked inpainting on edits.

Usage

The skill ships a pre-bundled Node script — no tsx or dependency install needed. The script's --help is the authoritative flag reference; run it rather than guessing:

node ${CLAUDE_PLUGIN_ROOT}/skills/image-gen/dist/generate_image.js --help

Generate:

node ${CLAUDE_PLUGIN_ROOT}/skills/image-gen/dist/generate_image.js \
  --prompt "your description" --filename "output.png"

Edit (image-to-image):

node ${CLAUDE_PLUGIN_ROOT}/skills/image-gen/dist/generate_image.js \
  --prompt "editing instructions" --filename "output.png" \
  --input-image "path/to/input.png"

API keys

Read from the environment unless --api-key overrides: Gemini uses GEMINI_API_KEY or GOOGLE_API_KEY; OpenAI uses OPENAI_API_KEY. If only OPENAI_API_KEY is set, the provider defaults to OpenAI.

Conventions

  • Name files YYYY-MM-DD-HH-MM-SS-descriptive-name.png.
  • For blog diagrams, use OpenAI at 2K — anything with readable labels or callouts needs its text fidelity. Save to the post's content dir (e.g. src/content/blog/post-name/) and prefer clean, minimalist styles.
  • The script prints the saved path. Report that path to the user; do not read the image back.
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 51 lines · 67 tokens per session scan A c8ec853977fb

Subscribe to this mod's changes

image-gen is a skill published in the GitHub repository nicknisi/claude-plugins (114 stars, last pushed 2mo ago), licensed MIT. It adds 67 tokens to every session and 496 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Creative and media
Related

image-gen compared with skills from other repositories

image-gen next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
image-gennicknisi/claude-pluginsSkill1142mo agoMITA67Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99ktodayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79ktodayMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill314k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code