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 time-energy-managementgit 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/time-energy-management)<a href="https://agentmods.dev/skills/refoundai/lenny-skills/time-energy-management"><img src="https://agentmods.dev/badge/skills/refoundai/lenny-skills/time-energy-management/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/time-energy-management"><img src="https://agentmods.dev/badge/skills/refoundai/lenny-skills/time-energy-management.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 | $0.00029 | $0.01239 |
| Opus 5 | $0.00015 | $0.00620 |
| Sonnet 5 | $0.00006 | $0.00248 |
| Haiku 4.5 | $0.00003 | $0.00124 |
Grade A, and why
time-energy-management 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 — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Time and Energy Management
Protect your focus and fuel your performance by treating time and energy as strategic assets.
Help the user with time and energy management using insights from 25 guests and posts across Lenny's Podcast and Newsletter.
How to Help
- Audit current habits - Help the user identify where their time actually goes versus where they intended it to go using real-time tracking techniques.
- Identify energy leaks - Guide the user through mapping their daily energy fluctuations to find recurring tasks that drain them.
- Establish boundaries - Assist in drafting personal policies and scripts to decline low-leverage requests politely.
- Optimize work blocks - Structure a schedule that prioritizes deep work and high-leverage 'Daily Highlights' over shallow reaction mode.
Core Principles
Reflective Synthesis
Alex Komoroske: "And I take a lot of notes. And people, I tell people when I'm in meetings with them of like, 'If you see me on my phone or typing, that means I think you said something very interesting and I'm writing it down. It's not that I'm just that I'm disengaged. I try to collect all these ideas.' And then once a week, I go through, I take a few hours and I just reflect to myself and try to find patterns and unpack and find meaning and things."
Dedicating deliberate time to synthesize raw notes transforms fleeting observations into durable strategic insights. This practice prevents the loss of valuable context and builds a library of institutional knowledge.
Action-Based Boundaries
Dr. Becky Kennedy: "Boundaries are what you tell someone else you will do, and it requires the other person to do nothing. Making a request, that's not a boundary."
Boundaries are defined by your own planned actions and do not rely on another person's agreement to be effective. Clearly distinguish between making a request of others and setting a firm boundary for yourself.
The Daily Highlight
Jake Knapp + John Zeratsky: "The notion with the highlight is imagine it's the end of the day if someone asks you, 'What was the highlight of your day,' what would you say? That's the anchor of everything. That's the core, that's the foundation."
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 · 82 lines · 29 tokens per session scan A b5886cc4ae2d
time-energy-management is a skill published in the GitHub repository RefoundAI/lenny-skills (1,321 stars, last pushed 1mo ago), licensed MIT. It adds 29 tokens to every session and 1,239 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.
Other skills, from other repositories
himalaya
Himalaya v2 CLI for reading and managing email through IMAP, JMAP, Gmail, Microsoft Graph, Maildir, M2dir, and SMTP send operations.
slacrawl
Archive and search Slack workspace messages, threads, and channels via the slacrawl CLI. Supports API sync, Slack export ZIP import, local desktop cache import, and full-text search.
birdclaw
Local-first Twitter/X workspace for archiving, searching, and triaging tweets, DMs, likes, bookmarks, and mentions. Includes a web UI for inbox triage and AI scoring.
apple-reminders
Manage Apple Reminders via remindctl CLI (list, add, complete, delete).
imsg
Use imsg to read and send iMessage/SMS via macOS Messages.app.
apple-notes
Manage Apple Notes via the memo CLI on macOS (create, view, search, edit).