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.
npx skills add jeremylongworth-source/AgentSkills --skill itch-html5-game-publishinggit clone --depth 1 https://github.com/jeremylongworth-source/AgentSkillsWrote 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.
[](https://agentmods.dev/skills/jeremylongworth-source/agentskills/itch-html5-game-publishing)<a href="https://agentmods.dev/skills/jeremylongworth-source/agentskills/itch-html5-game-publishing"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/itch-html5-game-publishing/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.
<a href="https://agentmods.dev/skills/jeremylongworth-source/agentskills/itch-html5-game-publishing"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/itch-html5-game-publishing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00091 | $0.00841 |
| Opus 5 | $0.00046 | $0.00420 |
| Sonnet 5 | $0.00018 | $0.00168 |
| Haiku 4.5 | $0.00009 | $0.00084 |
Grade A, and why
itch-html5-game-publishing 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
itch.io HTML5 Game Publishing
Core Workflow
- Identify the build type, engine/framework, expected viewport, desktop/mobile support, file size, payment intent, and whether the game should run embedded or fullscreen.
- Produce a clean browser build with
index.htmlat the ZIP root unless the project is a single self-contained HTML file. - Use relative paths and exact filename casing. Treat itch.io hosting as case-sensitive even if the local OS is forgiving.
- Test the build from a local static server, then test the uploaded itch.io preview because iframe, fullscreen, HTTPS, audio, and path behavior can differ from local files.
- Configure embed options: viewport size or fullscreen launch, click-to-play, fullscreen button, scrollbars, mobile-friendly flag, and pre-launch cover art.
- Configure pricing deliberately. HTML5 games currently accept payments as donations; use project pricing, suggested donation, bonus downloadable files, or downloadable kind depending on the business model.
- Prepare the game page for conversion: title, capsule/cover art, screenshots/GIFs, description, controls, accessibility notes, update notes, tags, engine tag, and support/contact details.
Packaging Requirements
- Use ZIP for multi-file games; single HTML upload only works for truly self-contained files.
- Include every runtime asset needed by the game inside the ZIP.
- Keep
index.htmlat the ZIP root. - Avoid unsupported archive formats.
- Keep file count, path length, extracted size, and single-file size under itch.io's current limits.
- Do not reference non-HTTPS external resources.
- Optimize loading like a website: compress assets, reduce large files, avoid unnecessary source maps in release builds, and show loading progress.
Donation And Pay-What-You-Want Guidance
- For HTML5 game pages, treat money as donation/support unless itch.io's current docs say otherwise.
- Use
$0 or Donatewhen players should play for free but be asked to support. - Use a suggested donation amount and page copy that explains what support funds.
- Use individually priced files for optional extras such as soundtrack, art pack, source files, bonus levels, wallpapers, or downloadable builds.
- Avoid relying on optional donations as the only monetization plan for a large commercial project without a realistic conversion expectation.
- If the game must require payment before access, review current itch.io docs and consider using a downloadable project kind or separate downloadable files.
What ships with it
2 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.
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.
- 7d ago First seen · 67 lines · 91 tokens per session scan A c14e7cfc4bf7
itch-html5-game-publishing is a skill published in the GitHub repository jeremylongworth-source/AgentSkills (1 stars, last pushed 8d ago), licensed MIT. It adds 91 tokens to every session and 841 once invoked, about $0.0005 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 2026-09-03.
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