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 kostja94/marketing-skills --skill sidebargit clone --depth 1 https://github.com/kostja94/marketing-skillsWrote 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/kostja94/marketing-skills/sidebar)<a href="https://agentmods.dev/skills/kostja94/marketing-skills/sidebar"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/sidebar/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/kostja94/marketing-skills/sidebar"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/sidebar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00076 | $0.00688 |
| Opus 5 | $0.00038 | $0.00344 |
| Sonnet 5 | $0.00015 | $0.00138 |
| Haiku 4.5 | $0.00008 | $0.00069 |
Grade A, and why
sidebar-generator 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 11d 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.
Copies of this mod
3 near-identical copies found in the catalogue:
- sidebar-generator — 100% identical, 0 lines differ
- sidebar-generator — 100% identical, 0 lines differ
- sidebar-generator — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Components: Sidebar
Guides sidebar design for content sites (blogs, docs). ~80% of users focus on the left; sidebars influence flow but can hurt conversion if overused. Posts without sidebars show 3.1x higher conversion; bottom-right sticky CTAs outperform sidebars (5.62% vs 0.58% CTR).
When invoking: On first use, if helpful, open with 1-2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.
Initial Assessment
Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for content structure and conversion goals.
Identify:
- Content type: Blog, docs, e-commerce
- Primary goal: Navigation, CTA, related content
- Mobile: Collapse to hamburger or hide on small screens
Best Practices
Placement
- Left sidebar: Prime for nav; 80% of users focus left
- Right sidebar: Secondary content, ads, related posts
- Static vs sticky: Static for content-focused; sticky for persistent CTA (subscription, cart)
Conversion Reality
| Approach | Typical result |
|---|---|
| Sidebar CTA | <1% opt-in for blog sidebars |
| In-content CTA | 3x+ higher conversion |
| Bottom-right sticky | 5.62% CTR vs 0.58% sidebar |
| No sidebar | 3.1x higher conversion vs with sidebar |
Recommendation: Prefer in-content CTAs or bottom-right sticky over sidebar CTAs. Use sidebar for nav and discovery, not primary conversion.
Widget Guidelines
- One high-value CTA max; avoid clutter
- Social proof: Testimonials, logos
- Popular/related posts: Discovery, internal linking
- Avoid: Too many ads, affiliate links; reduces trust and speed
Mobile
- Collapse: Hamburger or off-canvas drawer
- 57%+ mobile traffic: Responsive design non-negotiable
- Reduce clutter: Hide or simplify sidebar on small screens
Output Format
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.
- 11d ago First seen · 68 lines · 76 tokens per session scan A 7362a1c0db7a
sidebar-generator is a skill published in the GitHub repository kostja94/marketing-skills (963 stars, last pushed 3mo ago), licensed MIT. It adds 76 tokens to every session and 688 once invoked, about $0.0004 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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