Cumulative Layout Shift
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Minimize cumulative layout shift.
Help users design and facilitate product reviews that shift from status updates to strategic deep-dives, ensuring high-quality craftsmanship and organizational alignment.
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install RefoundAI/lenny-skills product-reviews --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/product-reviews .claude/skills/product-reviews && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .claude/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviewsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install RefoundAI/lenny-skills product-reviews --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/product-reviews .agents/skills/product-reviews && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .agents/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install RefoundAI/lenny-skills product-reviews --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/product-reviews .cursor/skills/product-reviews && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .cursor/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/RefoundAI/lenny-skills.git --path skills/product-reviews--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install RefoundAI/lenny-skills product-reviews --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/product-reviews .gemini/skills/product-reviews && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .gemini/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install RefoundAI/lenny-skills product-reviewsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/product-reviews .github/skills/product-reviews && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .github/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add RefoundAI/lenny-skills --skill product-reviews -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install RefoundAI/lenny-skills product-reviews --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/RefoundAI/lenny-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/product-reviews .opencode/skills/product-reviews && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "product-reviews" agent skill from https://github.com/RefoundAI/lenny-skills/tree/main/skills/product-reviews into .opencode/skills/product-reviews/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "product-reviews", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
product-reviewsHelp users design and facilitate product reviews that shift from status updates to strategic deep-dives, ensuring high-quality craftsmanship and organizational alignment.
Product Reviews is an agent skill from RefoundAI/lenny-skills. Help users design and facilitate product reviews that shift from status updates to strategic deep-dives, ensuring high-quality craftsmanship and organizational alignment.
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/artifacts.md` and `references/guest-insights.md`).
The repository describes itself as: 86 product management skills from Lenny's Podcast for Claude Code and AI agents. Hiring, user research, strategy, shipping, and more. The licence is MIT.
4 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 13598cc. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Product Reviews loads about 1.8k tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 47 tokens; SKILL.md has 975 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from RefoundAI/lenny-skills at commit 13598cc, republished under its MIT licence (© RefoundAI). 975 words, ~1,762 tokens.
.claude/skills/product-reviews/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.Run rigorous alignment sessions that raise the quality bar and accelerate decision-making.
Help the user with effective product reviews using insights from 12 guests and posts across Lenny's Podcast and Newsletter.
From "How Figma builds product": "One thing I encourage for both is to first present the “option space”—it’s really powerful to have a framework that maps all possible solutions or problems and use that as a device to discuss high-level tradeoffs or philosophical differences."
High-quality decisions come from mapping the entire field of possible solutions rather than debating a single proposal in isolation.
From "How Duolingo builds product": "Product review meetings happen every Tuesday and Thursday for a total of two hours. These two hours are divided into 20-minute slots that product teams sign up to present. The agenda of these meetings is product teams presenting their proposed product changes for the first 5 to 10 minutes and then reviewers asking questions and giving feedback for the rest of the time."
Recurring, short review slots prevent feedback bottlenecks and create a shared understanding of what constitutes quality across the organization.
From "How Miro builds product": "Product reviews can focus on different stages of the product development lifecycle: P-Strat: long-term strategy and vision; P0: the opportunity and problem that we want to pursue; P1: the proposed solution; P2: what we launched and how it’s performing."
Structure reviews into distinct stages to ensure leadership agrees on the problem and the strategic direction before teams commit to high-fidelity design work.
From "How Miro builds product": "One of the product leaders came up with the 'Mona Lisa principle'—simply put, everything we ship should be like a Mona Lisa painting, something we’d be proud of putting our name on. . . Every month, they review everything that was shipped and say what is high-quality or not."
Use simple metaphors or principles to build intuition across the team, helping everyone understand the bar for excellence without constant oversight.
From "How Snowflake builds product": "The goal of a product review isn’t to “sell” the leadership team on a new investment but to detail customer requirements, align on relative business priorities, and provide a clear direction of how to address these challenges."
Format reviews as collaborative sessions focused on consistent decision-making rather than internal marketing or selling an idea to leadership.
Tomer Cohen: "I push a lot for what is actually your opinion, what is your potentially controversial opinion and the best principles have teeth. So saying that we should build a simple product for me is useless. Who doesn't want to build a simple product?"
Reviews should be deep-dives into specific problems and principled opinions, avoiding the trap of high-level status updates that provide no strategic value.
See references/artifacts.md for the full list with details.
For all 12 sourced insights from 12 guests, see references/guest-insights.md
© RefoundAI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 2 other files (references) in skills/product-reviews of RefoundAI/lenny-skills.
Open the folder on GitHubat commit 13598cc
Product Reviews next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Product Reviews this skillRefoundAI/lenny-skills | 1.4k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Cumulative Layout Shiftthedaviddias/Front-End-Checklist | 74k | — | ~438 | Automated safety check: Pass | MIT | |
| ShiftLeoYeAI/openclaw-master-skills | 2.2k | — | ~4.1k | Automated safety check: Pass | MIT | |
| Shiftshift-editor/shift | 349 | — | ~663 | Automated safety check: Pass | Apache-2.0 | |
| Shifting Clinical Datesmaziyarpanahi/openmed | 5.5k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Interactive Workshop Facilitationdeanpeters/Product-Manager-Skills | 7.2k | 1 repos | ~1.5k | Automated safety check: Pass | Custom licence |
thedaviddias/Front-End-Checklist
A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Minimize cumulative layout shift.
LeoYeAI/openclaw-master-skills
Multi-identity delegation for OpenClaw. An agent skill from LeoYeAI/openclaw-master-skills.
shift-editor/shift
Work with fonts in the Shift font editor. An agent skill from shift-editor/shift.
maziyarpanahi/openmed
Apply consistent per-patient date shifting in OpenMed that preserves intervals between events while satisfying HIPAA Safe Harbor's date rule.
deanpeters/Product-Manager-Skills
Supplies the shared pacing protocol other interactive skills use: one question per turn, visible progress, and safe interruptions.
hashgraph-online/awesome-codex-plugins
Interactive root cause analysis facilitator — runs a structured 5-Why why chain session, challenges each answer with evidence requirements, detects symptomatic and circular reasoning, and produces a…
RefoundAI/lenny-skills
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RefoundAI/lenny-skills
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RefoundAI/lenny-skills
Help users reach their first moment of core value by optimizing the first-run experience, removing friction, and aligning product design with psychological triggers.
RefoundAI/lenny-skills
Help users identify unique distribution advantages and master the lifecycle of acquisition channels to build a sustainable engine for growth and retention.
RefoundAI/lenny-skills
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RefoundAI/lenny-skills
Help users build robust infrastructure for measuring, monitoring, and iterating on AI product performance using human, code-based, and LLM-as-a-judge methodologies.
Help users design and facilitate product reviews that shift from status updates to strategic deep-dives, ensuring high-quality craftsmanship and organizational alignment. Product Reviews is an agent skill from RefoundAI/lenny-skills. Help users design and facilitate product reviews that shift from status updates to strategic deep-dives, ensuring high-quality craftsmanship and organizational alignment.
Run `npx skills add RefoundAI/lenny-skills --skill product-reviews -a claude-code`. Or copy the skill folder (skills/product-reviews in RefoundAI/lenny-skills) into .claude/skills/product-reviews in your project. Claude Code loads it when a task matches its description.
Run `npx skills add RefoundAI/lenny-skills --skill product-reviews -a codex`. Or copy the skill folder (skills/product-reviews in RefoundAI/lenny-skills) into .agents/skills/product-reviews in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add RefoundAI/lenny-skills --skill product-reviews -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/product-reviews, .gemini/skills/product-reviews, .github/skills/product-reviews and .opencode/skills/product-reviews in your project.
SKILL.md names no scripts, command-line tools or credentials: Product Reviews is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Product Reviews is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.8k tokens (SKILL.md is roughly 7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 8.3k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Product Reviews: Cumulative Layout Shift (thedaviddias/Front-End-Checklist, 74k stars), Shift (LeoYeAI/openclaw-master-skills, 2.2k stars), Shift (shift-editor/shift, 349 stars) and Shifting Clinical Dates (maziyarpanahi/openmed, 5.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
RefoundAI (a GitHub organization) maintains it in RefoundAI/lenny-skills, which has 1,382 GitHub stars. The repository holds 76 skills in this directory. The repository was last updated on July 16, 2026.
Source: RefoundAI/lenny-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.