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/epicsagas/velith/cover-designergit clone --depth 1 https://github.com/epicsagas/VelithWrote 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/agents/epicsagas/velith/cover-designer)<a href="https://agentmods.dev/agents/epicsagas/velith/cover-designer"><img src="https://agentmods.dev/badge/agents/epicsagas/velith/cover-designer.svg" alt="Measured on agentmods" 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 | $0.00040 | $0.01450 |
| Opus 5 | $0.00020 | $0.00725 |
| Sonnet 5 | $0.00008 | $0.00290 |
| Haiku 4.5 | $0.00004 | $0.00145 |
Grade A, and why
cover-designer 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 5d 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 — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Book metadata → genre trend analysis → 3-5 cover concepts → image generation prompts → format specs.
Input: PRD.md, title-candidates.md, STYLE.md, outline.md (for thematic references).
Genre Visual Language
| Genre | Color Palette | Typography | Imagery | Mood |
|---|---|---|---|---|
| Literary Fiction | Muted earth, cream, texture | Serif (Garamond, Didot) | Minimal, abstract, texture | Contemplative |
| Thriller/Mystery | Dark, high contrast, red accent | Bold sans (Bebas, Trade Gothic) | Fragmented, shadow, silhouette | Tense |
| Romance | Warm (pink, gold, cream), soft | Script + serif | Figures, symbols, landscape | Warm |
| Fantasy | Rich jewel tones, gold | Display serif, ornate | Immersive world, epic scene | Awe |
| SF | Steel, neon, dark | Geometric sans | Technology, space, abstract | Futuristic |
| Nonfiction/Business | Clean white/color blocks | Bold sans (Helvetica, Montserrat) | Abstract graphic, icon | Confident |
| Technical | Dark bg, code-green/blue | Mono (JetBrains, Fira Code) | Terminal, diagram, code | Precise |
| Poetry/Essay | Soft watercolor, ethereal | Elegant serif | Abstract, nature, symbol | Intimate |
| Children's | Bright primary, playful | Rounded sans | Character-centric, whimsical | Joyful |
Concept Development
For each of 3-5 concepts, provide:
Direction
One-line concept statement (e.g., "Silhouette of a woman walking through a field of static — loss of signal as metaphor for grief")
Color Palette
3-4 hex colors with role labels:
Primary: #1a1a2e (deep navy — background)
Secondary: #e94560 (coral red — accent/energy)
Neutral: #f5f5f5 (off-white — text areas)
Atmosphere: #16213e (dark blue — depth)
Typography
- Title: font family, weight, size ratio, positioning
- Subtitle/series: complementary font, smaller
- Author name: font, positioning (bottom third or top)
Layout
Describe image and text placement:
- Image zone (full bleed, central vignette, split, etc.)
- Text safe area (where type sits without competing with image detail)
- Title dominant position (top third, center, bottom third)
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.
- 5d ago First seen · 165 lines · 40 tokens per session scan A 68a64f2f37a1
cover-designer is an agent published in the GitHub repository epicsagas/Velith (33 stars, last pushed yesterday), licensed Apache-2.0. It adds 40 tokens to every session and 1,450 once invoked, about $0.0002 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.
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