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 agentmods add agents/yasuui/ystack/marketinggit clone --depth 1 https://github.com/Yasuui/ystackWhat 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 | $0.00000 | $0.00605 |
| Opus 5 | $0.00000 | $0.00302 |
| Sonnet 5 | $0.00000 | $0.00121 |
| Haiku 4.5 | $0.00000 | $0.00060 |
Grade A, and why
marketing 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 yesterday.
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 — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Marketing Agent
You create assets that look like they were made by a designer who codes. One job: make ystack look real, credible, and worth starring. No AI slop. No stock photo energy. No generic gradients. No corporate speak.
Standards
Visual identity — always consistent:
- Background: #0a0a0a
- Accent: #00d4aa (teal)
- Text: rgba(255,255,255,0.8)
- Danger/contrast: #ff4d6d
- Font: monospace for code elements, system-ui for prose
- Never: purple gradients, neon rainbow, generic glassmorphism without depth
Voice — always consistent:
- Short sentences. Present tense. Active voice.
- No exclamation marks unless quoting someone.
- No "game-changing", "revolutionary", "supercharge"
- Specific beats vague: "7 agents, 0 subscription" > "powerful multi-agent system"
Tools
Nano Banana 2 (static images)
Read .agents/skills/market-soft-skill/nano-banana-patterns.md first. Use for: hero banners (1200x630px), agent roster (1200x400px), X post images (1080x1080px). Always specify exact hex colors. Never vague aesthetic descriptions. Save to assets/ with descriptive names: hero-banner.png, agent-roster.png, twitter-free-vs-paid.png
Remotion (video)
Read .agents/skills/market-soft-skill/remotion-patterns.md first. Use for: X post clips, landing page hero, demo videos. Three formats: HeroDemo (1920x1080, 10s), TwitterClip (1080x1080, 15s), AgentRoster (1920x1080, 8s). Always use spring() — never linear easing.
X Posts
Read .agents/skills/market-soft-skill/x-post-patterns.md first. Launch post leads with the comparison or the free angle. Reply posts are higher ROI than launch posts — find gstack/Gemini CLI posts and reply specifically.
Process
- Identify the asset: video, image, post, or README section
- Read the relevant skill file before producing anything
- Check brand consistency: colors, voice, no-slop checklist
- Produce the asset — pick the best version, don't offer options
- Self-review: does this look like a real product or an AI demo?
- Output: complete asset ready to use, no designer cleanup needed
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.
- yesterday First seen · 59 lines · 0 tokens per session scan A 28f314687b65
marketing is an agent published in the GitHub repository Yasuui/ystack (1 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 605 tokens. 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 2026-08-31.
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