What is create-explanatory-image?

An image-generation helper for making explanatory diagrams and infographics that communicate a concept visually.

Use it to create concept diagrams and infographics, choosing a dark or warm visual style and saving the generated images in a chosen folder.

It helps turn an abstract explanation into a visual and checks the result through repeated iterations for logical accuracy and readable text.

create-explanatory-image — Skill for Claude Code and Codex by Abilityai: An image-generation helper for making explanatory diagrams and info

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/abilityai/cornelius/create-explanatory-image

Any agent

npx skills add Abilityai/cornelius --skill create-explanatory-image

Clone the repo

git clone --depth 1 https://github.com/Abilityai/cornelius

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/abilityai/cornelius/create-explanatory-image.svg)](https://agentmods.dev/skills/abilityai/cornelius/create-explanatory-image)

Your own site

<a href="https://agentmods.dev/skills/abilityai/cornelius/create-explanatory-image"><img src="https://agentmods.dev/badge/skills/abilityai/cornelius/create-explanatory-image.svg" alt="Measured on agentmods" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,692 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00051	$0.02692
Opus 5	$0.00026	$0.01346
Sonnet 5	$0.00010	$0.00538
Haiku 4.5	$0.00005	$0.00269

Measured 4d ago against content hash 4f2cba7b7c0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-explanatory-image 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 4d ago.

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.

.claude/skills/create-explanatory-image/SKILL.md · 278 lines

How it starts

The opening of the file, as written. The whole thing — 278 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create Explanatory Image

Purpose

Generate explanatory diagrams and infographics that clearly communicate a concept, iterating autonomously until the images are logically correct, text is accurate, and the visual explanation lands.

State Dependencies

Source	Location	Read	Write	Description
Best practices	`.claude/skills/nano-banana-image-generator/best_practices.md`	yes		Prompt engineering constraints and style guide
Generate script	`.claude/skills/nano-banana-image-generator/scripts/generate_image.py`	yes		Image generation API
Output folder	User-specified or auto-created		yes	Final and intermediate images

Prerequisites

GOOGLE_API_KEY or GEMINI_API_KEY set in .env
Nano Banana image generator scripts available at .claude/skills/nano-banana-image-generator/scripts/

Inputs

Concept description: What the diagram should explain (from user message or arguments)
Output folder (optional): Where to save images. Default: auto-created folder named after the concept in current directory
Style (optional): dark (black bg, brand style) or warm (charcoal bg, illustrated). Default: warm
Aspect ratio (optional): 16:9, 1:1, 9:16. Default: 16:9
Variant count (optional): How many initial variants. Default: 3

Process

Step 1: Read Current State

Read .claude/skills/nano-banana-image-generator/best_practices.md
- Note complexity limits: 10 boxes max, 10 text labels max, 3 hierarchy levels max
- Note known model limitations (misspellings on 4+ syllable words, font inconsistency)
Confirm output folder:
- If user specified a folder, use it
- Otherwise, create: [concept_slug]_diagrams/ in current directory
- mkdir -p [folder]

Step 2: Decompose the Concept

Analyze the user's concept description and break it down:

Core message: What single insight should the viewer walk away with?
Visual elements: List all shapes, icons, nodes, connections needed
Text labels: List every text string that will appear in the image
Layout type: Identify the best diagram type:
- Framework (central concept + surrounding elements)
- Before/after comparison
- Flow/process (horizontal or vertical)
- Circular loop/cycle
- Visual metaphor
- Timeline/evolution
- Cross-section/exploded view

Read the full file on GitHub · 278 lines

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.

4d ago First seen · 278 lines · 51 tokens per session scan A 4f2cba7b7c0c

Subscribe to this mod's changes

create-explanatory-image is a skill published in the GitHub repository Abilityai/cornelius (105 stars, last pushed 11d ago), licensed MIT. It adds 51 tokens to every session and 2,692 once invoked, about $0.0003 per session on Opus 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

general-video

Author or edit a custom HyperFrames composition when no specialized workflow fits, or when BRIEF.md sets flow: companion. Use for longer or multi-scene pieces, brand and sizzle reels, montages, static loops, static title cards, footage remixes, and freeform builds. Use motion-graphics instead for a short unnarrated…

heygen-com/hyperframes · 92 tokens

create-explanatory-image