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 liqiongyu/lenny_skills_plus --skill vibe-codinggit clone --depth 1 https://github.com/liqiongyu/lenny_skills_plusWrote 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/liqiongyu/lenny_skills_plus/vibe-coding)<a href="https://agentmods.dev/skills/liqiongyu/lenny_skills_plus/vibe-coding"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/vibe-coding/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/liqiongyu/lenny_skills_plus/vibe-coding"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/vibe-coding.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 | $0.00019 | $0.02014 |
| Opus 5 | $0.00010 | $0.01007 |
| Sonnet 5 | $0.00004 | $0.00403 |
| Haiku 4.5 | $0.00002 | $0.00201 |
Grade A, and why
vibe-coding 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 9d 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 — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vibe Coding
Scope
Covers
- Timeboxed, AI-assisted rapid prototyping ("vibe coding") to produce a functional demo (not slides)
- Turning a rough idea into a buildable prototype spec + task board + prompt pack
- A tight iteration loop: generate → run → verify → adjust → log decisions
- "Build tools to build the thing" when it meaningfully speeds up the demo (timeboxed)
- Safe use of coding agents: least privilege, no secrets, small diffs, validation, rollback
When to use
- "Vibe code a working prototype we can demo in 30–90 minutes."
- "Replace this Figma concept with a clickable prototype."
- "I’m not an engineer—help me build a small app/tool with AI and ship a demo."
- "Turn this AI feature idea into a proof-of-concept with a clear build loop and demo script."
When NOT to use
- You need a production-grade system, hardening, scaling, or security review (use
building-with-llms+ engineering process). - You need upstream problem framing, strategy, or PRD-level alignment (use
problem-definition,writing-prds). - The work is high-stakes/irreversible (payments, auth, medical, legal, safety-critical) without human owners and reviews.
- The request is "build anything" with no demo target; do intake first and narrow to one scenario.
- You want to evaluate whether to adopt a new AI tool or framework (use
evaluating-new-technology). - You need an AI/LLM product strategy, not a prototype (use
ai-product-strategy). - You're validating a startup idea at the business-model level, not building a demo (use
startup-ideation).
Inputs
Minimum required
- Prototype goal: what should a user be able to do in the demo (1–3 "happy path" tasks)
- Target user + context (who uses it, where it fits)
- Timebox (e.g., 30/60/90 minutes) + demo audience (internal, customer, exec)
- Platform preference (web app, mobile, CLI, spreadsheet, etc.) and constraints (privacy, data sensitivity)
- Data/integrations: mock data ok? any APIs needed? (default to mock)
Missing-info strategy
- Ask up to 5 questions from references/INTAKE.md (3–5 at a time).
- If details remain missing, proceed with explicit assumptions and offer 2–3 options (e.g., mock vs real data; simple UI vs polished).
- If asked to run commands or write/modify files, request confirmation, keep changes in a dedicated folder, and include rollback guidance.
What ships with it
13 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.
- eval/eval_config.json 639 B
- eval/SHOWCASE.md 4.6 KB
- eval/with_skill.md 25 KB
- eval/without_skill.md 16 KB
- README.md 1.6 KB
- references/CHECKLISTS.md 1.7 KB
- references/EXAMPLES.md 2.1 KB
- references/INTAKE.md 1.5 KB
- references/RUBRIC.md 2.3 KB
- references/SOURCE_SUMMARY.md 1.6 KB
- references/TEMPLATES.md 3.2 KB
- references/WORKFLOW.md 2.5 KB
- skillpack.json 354 B
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.
- 9d ago First seen · 129 lines · 19 tokens per session scan A 5878d99c3220
vibe-coding is a skill published in the GitHub repository liqiongyu/lenny_skills_plus (52 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 2,014 once invoked, about $0.0001 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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