growth-engineering SKILL.md skillA
growth-engineering from travisjneuman/.claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add travisjneuman/.claude/growth-engineering@git:20260930.c8d311dPins git:20260930.c8d311d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- travisjneuman/.claude
- Path
skills/growth-engineering/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260930.c8d311d, committed Sep 30, 2026
- First version recorded
- Feb 7, 2026
- Size
- 4,806 bytes
- Repository stars
- 105
- License
- MIT
A/B testing infrastructure, feature flags (LaunchDarkly, Unleash), experimentation platforms, PLG patterns, and funnel optimization. Use when building experimentation systems, implementing feature toggles, or optimizing conversion funnels.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Growth Engineering Skill
Infrastructure and patterns for product-led growth, experimentation, and conversion optimization.
---
## Feature Flag Systems
### Implementation Pattern
```typescript
// lib/feature-flags.ts
import { PostHog } from 'posthog-node';
const posthog = new PostHog(process.env.POSTHOG_API_KEY!);
interface FeatureFlags {
'new-onboarding-flow': boolean;
'pricing-experiment': 'control' | 'variant-a' | 'variant-b';
'ai-suggestions': boolean;
}
export async function getFlag<K extends keyof FeatureFlags>(
key: K,
userId: string,
): Promise<FeatureFlags[K]> {
const value = await posthog.getFeatureFlag(key, userId);
return value as FeatureFlags[K];
}
// Usage in component
const showNewOnboarding = await getFlag('new-onboarding-flow', user.id);
```
### Feature Flag Best Practices
- Short-lived flags: Remove after experiment concludes (< 2 weeks)
- Long-lived flags: Ops toggles for gradual rollouts, kill switches
- Never nest feature flags (creates exponential complexity)
- Clean up stale flags monthly
- Log flag evaluations for debugging
---
## A/B Testing Infrastructure
### Experiment Design
```typescript
// lib/experiments.ts
…Read the whole file at its exact version.
How to install
mdr add travisjneuman/.claude/growth-engineering@sha256:c9f2d16587593cc9The line at the top of this page pins the label git:20260930.c8d311d, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_db6ietd35girwxvb)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Feb 7, 2026 and Sep 30, 2026, about one every 235 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.c8d311d latest | 2026-09-30 | c8d311d | 4,806 B | A | view · diff |
| git:20260207.49cc324 | 2026-02-07 | 49cc324 | 4,809 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4806 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
travisjneuman/.claude · 105 stars · license MIT · pushed 2026-10-19 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_db6ietd35girwxvb GET https://markdownregistry.com/api/v1/resolve?ref=travisjneuman/.claude/growth-engineering GET https://markdownregistry.com/api/v1/blob/c9f2d16587593cc9577d2ed966b596fb99b88956210e18423ed788853d89ae26
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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