An image-making and image-editing tool that turns written descriptions into pictures, including styled images and logos. It can use GPT Image 2, Gemini, or FLUX.

Use it to generate illustrations, pictures, logos, and other visual assets, or to apply a different style to an existing image.

It removes the need to create every visual by hand or switch between separate image tools. It can also edit an existing image or match a reference style.

image — Skill for Claude Code by ondrej-svec/heart-of-gold-toolkit

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.

Any agent

npx skills add ondrej-svec/heart-of-gold-toolkit --skill image

Clone the repo

git clone --depth 1 https://github.com/ondrej-svec/heart-of-gold-toolkit

Made for: Claude Code.

Or install babel-fish, the plugin that ships this one along with the rest of its 4 skills.

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/ondrej-svec/heart-of-gold-toolkit/image/github.svg)](https://agentmods.dev/skills/ondrej-svec/heart-of-gold-toolkit/image)

Your own site

<a href="https://agentmods.dev/skills/ondrej-svec/heart-of-gold-toolkit/image"><img src="https://agentmods.dev/badge/skills/ondrej-svec/heart-of-gold-toolkit/image/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ondrej-svec/heart-of-gold-toolkit/image"><img src="https://agentmods.dev/badge/skills/ondrej-svec/heart-of-gold-toolkit/image.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,555 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 2 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.

Model	Per session	Once invoked
Fable 5.1	$0.00063	$0.01555
Opus 5.5	$0.00025	$0.00622
Sonnet 5.5	$0.00013	$0.00311
Haiku 4.5	$0.00006	$0.00155

Measured 2mo ago against content hash d1c9360f7162, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

image scanned grade B with 2 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 1 executable file (scripts/generate_image_codex.sh), 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

-H "Authorization: Bearer $(cat ~/.claude/secrets/openrouter.json | python3 -c 'import json,sys; print(json.load(sys.stdin)["api_key"])')" \

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl https://openrouter.ai/api/v1/images/generations \

plugins/babel-fish/skills/image/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Image Generation — Babel Fish

Translating your thoughts into pictures. The Babel Fish handles all languages, including visual ones.

Boundaries

MAY: generate images, save files, call image APIs
MAY NOT: send images to external services or share outputs without explicit confirmation

Backends

Backend	When to Use	Key
GPT Image 2 via Codex CLI (`gpt-image-2`)	Default — strong prompt adherence, text in images, no API key	ChatGPT OAuth (`codex login`)
Gemini (`gemini-3-pro-image-preview`)	Style transfer with reference images, multi-turn iteration, 4K	`GEMINI_API_KEY`
FLUX via OpenRouter (`black-forest-labs/flux.2-pro`)	Artistic, stylised work	`~/.claude/secrets/openrouter.json`

Backend selection (ask first)

Before generating, ask via AskUserQuestion which backend to use — list the three above as options with GPT Image 2 first (default). Skip the question only when:

The user already named a backend in their prompt ("use Gemini", "with FLUX", "via codex")
The request forces a specific one:
- Reference images for style matching → Gemini (the codex path does not accept reference images)
- True native transparent background → Gemini, or codex with explicit gpt-image-1.5
- 4K+ output above 3840px per edge → Gemini (codex caps at 3840)

Announce the chosen backend in one line before running so the user has clarity.

Requires: codex-cli >= 0.124.0-alpha.2 for GPT Image 2. Install: npm install -g @openai/[email protected].

Phase 0 — Understand

Gather before generating. Ask if unclear:

Subject: what's in the image?
Style: photorealistic, illustration, logo, watercolor, etc.
Aspect ratio: 1:1 (default), 16:9, 9:16, 4:3, 3:2
Resolution: 1K (default/fast), 2K (balanced), 4K (quality)
Purpose: blog post, social media, UI asset, logo
Output path: where to save (default: ./generated_image.jpg)

Phase 1 — Generate

GPT Image 2 via Codex (default)

Read the full file on GitHub · 158 lines

Files

What ships with it

1 file 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.

scripts/generate_image_codex.sh 2.2 KB runs code

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.

2mo ago First seen · 158 lines · 63 tokens per session scan B d1c9360f7162

Subscribe to this mod's changes

image is a skill published in the GitHub repository ondrej-svec/heart-of-gold-toolkit (19 stars, last pushed 1mo ago), licensed MIT. It adds 63 tokens to every session and 1,555 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it B with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Creative and media

image next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
imageondrej-svec/heart-of-gold-toolkit	Skill	19	1mo ago	MIT	B	63	Claude Code
imagegenopenai/codex	Skill	134k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	today	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	today	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	314k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code

image