What is visual-prompt-forge?

A prompt-writing tool that turns structured shot lists into prompts for specific image and video generators. It can also rewrite prompts for shots that failed review.

Creating still-image prompts for Midjourney, Flux, Ideogram, GPT Image, Nano Banana, or Seedream, and video prompts for Kling, Veo, Seedance, or Hailuo. It also revises only the failed shots using a critique file.

Different generators respond well to different prompt styles, so one generic prompt may give poor results. This adapts the same shot information to each named generator.

visual-prompt-forge — Skill for Claude Code and Codex by whystrohm

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/whystrohm/shotkit

agentmods

npx agentmods add skills/whystrohm/shotkit/visual-prompt-forge

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/whystrohm/shotkit/visual-prompt-forge/github.svg)](https://agentmods.dev/skills/whystrohm/shotkit/visual-prompt-forge)

Your own site

<a href="https://agentmods.dev/skills/whystrohm/shotkit/visual-prompt-forge"><img src="https://agentmods.dev/badge/skills/whystrohm/shotkit/visual-prompt-forge/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/whystrohm/shotkit/visual-prompt-forge"><img src="https://agentmods.dev/badge/skills/whystrohm/shotkit/visual-prompt-forge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 157 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,751 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.

Model	Per session	Once invoked
Fable 5.1	$0.00157	$0.04751
Opus 5.5	$0.00063	$0.01900
Sonnet 5.5	$0.00031	$0.00950
Haiku 4.5	$0.00016	$0.00475

Measured 26d ago against content hash 89b8d2dc8f57, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

visual-prompt-forge 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 26d 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.

skills/visual-prompt-forge/SKILL.md · 393 lines

How it starts

The opening of the file, as written. The whole thing — 393 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Visual Prompt Forge

You are turning structured shot data into prompts that work in production. Each image generator rewards a different prompting style, short and high-signal for Midjourney, natural-language for Flux, paragraph-form for GPT Image, text-aware for Ideogram. A prompt that crushes in one will produce slop in another.

This skill adapts. Same shot, different syntax.

When to use

Trigger when the user:

Hands over a shots.json (or any structured shot list) and asks for prompts
Asks for "image prompts," "Midjourney prompts," "video prompts," "generation prompts" for a storyboard or its shots
Names target generators for a storyboard's prompts (Midjourney, Flux, Ideogram, GPT Image, Nano Banana, Seedream, Kling, Veo, Seedance, Hailuo)
Wants the same shot adapted to multiple generators

Naming a generator is not enough on its own. A request to generate an image, or to use one of these models for something other than storyboard shots, belongs to another tool.

If the user wants to build a storyboard from scratch (no shots.json yet), use storyboard-architect first, then chain into this skill.

Where the tools and packs are

After ./install.sh, the validators and helpers are in ~/.claude/shotkit-tools/ and the brand packs are in ~/.claude/shotkit-brand-packs/. A --project install puts both under ./.claude/ instead. From a repo clone they are tools/ and brand-packs/. The commands below give the installed path first and the clone path second. The tools need pip install pyyaml jsonschema.

What you produce

For a given shots.json and a list of target generators, produce one file per generator, inside a directory named for the round:

output/prompts/round-1/
├── midjourney.txt          # If targeted
├── flux.txt
├── ideogram.txt
├── gpt-image.txt
├── nano-banana.txt
├── seedream.txt
├── kling.txt               # Motion-aware video, default
├── veo.txt                 # Motion, dialogue/lipsync + native audio
├── seedance.txt            # Motion, multi-shot sequences
└── hailuo.txt              # Motion, budget iteration

Read the full file on GitHub · 393 lines

Files

What ships with it

23 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.

26d ago Changed · +29 lines · +19 tokens per session 89b8d2dc8f57
1mo ago First seen · 364 lines · 138 tokens per session scan A 46760f0ebecf

Subscribe to this mod's changes

visual-prompt-forge is a skill published in the GitHub repository whystrohm/shotkit (23 stars, last pushed 26d ago), licensed Apache-2.0. It adds 157 tokens to every session and 4,751 once invoked, about $0.0006 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.

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