Lenny Skills is a collection of product-management and engineering workflows for Claude Code and other AI agents, covering areas such as strategy, research, planning, shipping, growth, and hiring. Each skill gives an agent specialized guidance, frameworks, checklists, or templates for product work, and the catalogue contains many of these skills.
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 RefoundAI/lenny-skills --skill coaching-developmentgit clone --depth 1 https://github.com/RefoundAI/lenny-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/refoundai/lenny-skills/coaching-development)<a href="https://agentmods.dev/skills/refoundai/lenny-skills/coaching-development"><img src="https://agentmods.dev/badge/skills/refoundai/lenny-skills/coaching-development/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/refoundai/lenny-skills/coaching-development"><img src="https://agentmods.dev/badge/skills/refoundai/lenny-skills/coaching-development.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 | $0.00044 | $0.01024 |
| Opus 5 | $0.00022 | $0.00512 |
| Sonnet 5 | $0.00009 | $0.00205 |
| Haiku 4.5 | $0.00004 | $0.00102 |
Grade A, and why
coaching-development 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 — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Coaching and Talent Development
Build a high-performing team by shifting from a problem-solver to a growth-accelerator.
Help the user with coaching and talent development using insights from 18 guests and posts across Lenny's Podcast and Newsletter.
How to Help
- Assess skill gaps - Help the user identify specific technical or behavioral areas where their team members are currently struggling.
- Select frameworks - Recommend specific career ladders, rubrics, or AI-driven coaching tools from the corpus to provide objective standards.
- Design growth plans - Assist in creating next bigger challenges and quarterly stretch assignments for individual direct reports.
- Practice reflection - Guide the user in moving from giving immediate answers to asking powerful, curiosity-driven questions.
Core Principles
Reframe Underperformance as Skill Deficits
Dr. Becky Kennedy: "When you look at bad behavior, the actual problem is someone doesn't have the skill they need to manage something happening internally."
Identify the specific internal skill a struggling employee lacks to manage their current challenges instead of viewing it as a character flaw.
Lead with Personal Accountability
Elizabeth Stone: "It’s more about how much I care about excellence, I guess. So giving it my best in those situations. And that might not mean that I work really wild hours or I work weekends or I’m the one who’s willing to sacrifice the vacation. I’ve actually tried to avoid setting that as an expectation, but more that I hold myself to a very high standard."
High standards begin with the leader's own commitment to quality and promptness, ensuring you never become the bottleneck for your team.
Utilize Quarterly Stretch Assignments
Petra Wille: "And creating such a list once a quarter, for example, you block yourself an hour in your calendar, you write down the names of your direct reports, and then you just think about, 'Okay, what would be this next bigger challenge for them?'"
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.
- 9d ago First seen · 76 lines · 44 tokens per session scan A 3a8cacae9d72
coaching-development is a skill published in the GitHub repository RefoundAI/lenny-skills (1,311 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 1,024 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.
Other skills, from other repositories
manim-video
Production pipeline for mathematical and technical animations using Manim Community Edition. Creates 3Blue1Brown-style explainer videos, algorithm visualizations, equation derivations, architecture diagrams, and data stories. Use when users request: animated explanations, math animations, concept visualizations…
explainer-site
Create "How X Works" deep-dive explainer websites with the curious, technical-but-accessible style of howkeyboardswork.com. Use when asked to explain how something works, create an educational single-page guide, or build an interactive explainer site on any topic.
teach
Teach the user a new skill or concept, within this workspace.
canvas
Fetch Canvas LMS courses and assignments via API token.
playwright
Use when the task requires capturing or automating a real browser from the terminal.
ideation
Generate project ideas through creative constraints. Use when the user says 'I want to build something', 'give me a project idea', 'I'm bored', 'what should I make', 'inspire me', or any variant of 'I have tools but no direction'. Works for code, art, hardware, writing, tools, and anything that can be made.