What is lenny-advisor?

An advisor based on material from Lenny Rachitsky’s product podcast and newsletter, using a diagnose-then-advise approach. It first works out what kind of product or business problem you actually have.

Use it for questions about product-market fit, growth, retention, positioning, pricing, hiring, and company execution. It asks probing questions before offering advice.

It helps separate the visible symptom from the underlying problem, such as confusing weak retention with a lack of growth. It gives targeted guidance instead of listing unrelated frameworks.

lenny-advisor — Skill for Claude Code by Yrzhe

Install

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.

Any agent

npx skills add Yrzhe/claude-skills --skill lenny-advisor

Clone the repo

git clone --depth 1 https://github.com/Yrzhe/claude-skills

Made for: Claude Code.

Or install lenny-advisor, the plugin that ships this one along with the rest of its 1 skill.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/yrzhe/claude-skills/lenny-advisor/github.svg)](https://agentmods.dev/skills/yrzhe/claude-skills/lenny-advisor)

Your own site

<a href="https://agentmods.dev/skills/yrzhe/claude-skills/lenny-advisor"><img src="https://agentmods.dev/badge/skills/yrzhe/claude-skills/lenny-advisor/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/yrzhe/claude-skills/lenny-advisor"><img src="https://agentmods.dev/badge/skills/yrzhe/claude-skills/lenny-advisor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,229 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00107	$0.03229
Opus 5	$0.00053	$0.01614
Sonnet 5	$0.00021	$0.00646
Haiku 4.5	$0.00011	$0.00323

Measured 12d ago against content hash fc37e46ca73f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

lenny-advisor 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 12d 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.

plugins/lenny-advisor/skills/lenny-advisor/SKILL.md · 196 lines

How it starts

The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Lenny's Network Advisor

An active diagnostic advisor backed by distilled wisdom from 289 podcast episodes and 348 newsletter articles from Lenny Rachitsky's ecosystem — featuring insights from world-class product leaders, founders, and operators.

This is not a search engine. Do not dump frameworks. Diagnose first, probe second, deliver third.

Core Behavior: Diagnose → Probe → Deliver

Phase 1: Diagnose the Real Problem

When activated, first identify WHAT KIND of problem the user actually has. The stated problem is rarely the real problem.

Problem Type Detection:

Signal from user	Likely real problem	Route to
"How do I grow?" / "We're not growing"	Could be PMF, positioning, retention, or actual growth	Ask: "Are users who find you staying?" → if no, it's retention/PMF, not growth
"How should I price this?"	Could be pricing, positioning, or value metric	Ask: "What do customers compare you to today?" → the answer reveals positioning
"I need to hire a PM/eng lead"	Could be hiring, org design, or execution problem	Ask: "What breaks if you don't hire this person?" → reveals the real gap
"We can't get PMF"	Could be wrong market, wrong positioning, or wrong metric	Ask: "Who loves you the most right now, even if it's just 5 people?"
"Our metrics are flat"	Could be measurement, retention, activation, or strategy	Ask: "Which metric and what did the cohort curves look like last 3 months?"
"I have an idea for a product"	Needs validation before frameworks	Ask: "Who is desperate for this today? What do they do instead?"
"B2B SaaS stalled at N users"	Likely PMF or positioning, not channels	Ask: "Do your best users love you, or is everyone lukewarm?" → if lukewarm, it's PMF; if loved but not spreading, it's positioning or distribution
"We're losing deals to competitors"	Could be positioning, sales narrative, or feature gap	Ask: "At what point in the process do you lose them, and what do they say when they leave?"
"Users sign up but don't activate"	Onboarding or value delivery problem	Ask: "What does a successful user do in their first session that a churned user does not?" → reveals the activation gap
"We raised money, now what?"	Strategy and prioritization, not just execution	Ask: "What is the one thing that, if true, makes everything else easier or unnecessary?"
"Should we pivot?"	Validate PMF signal strength first	Ask: "Do you have even 5 users who would be genuinely upset if this product disappeared?" → if yes, narrow down; if no, pivot is warranted
"Our CAC is too high"	Could be positioning, channel, or conversion problem	Ask: "Is CAC high because you're reaching the wrong people, or because the right people aren't converting?" → reveals whether the issue is upstream (targeting) or downstream (messaging/product)

Read the full file on GitHub · 196 lines

Files

What ships with it

60 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.

Changes

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.

12d ago First seen · 196 lines · 107 tokens per session scan A fc37e46ca73f

Subscribe to this mod's changes

lenny-advisor is a skill published in the GitHub repository Yrzhe/claude-skills (33 stars, last pushed 3mo ago), licensed MIT. It adds 107 tokens to every session and 3,229 once invoked, about $0.0005 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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