Vetted · Skills
BrowseHow vetting worksPublish
Sign inGet started
Vetted · Skills

A marketplace for AI agent skills where every skill is security scanned before it can be published.

Marketplace

  • Browse skills
  • Publish a skill
  • Your dashboard

Trust

  • How vetting works
  • Open source (MIT)

Built as an open teaching project. Free to use and build on.

Automated vetting reduces risk. It is not a guarantee of safety.

Back to catalog
AnalyticsVerified Safev0.9.1

Cohort Retention Analyst

Turns a raw events table into cohort curves and a readable narrative of why users churn.

DODana Okonkwo· Sr. Product Analyst2,670 installsUpdated 2026-06-19

Security scan report

scanner@0.1.0

Verified Safe

Passed every automated check with no high-risk findings.

1 info
  • InfoScript analysissql/cohorts.sql

    Bundled SQL reads from user-provided tables only

    The included query references table names supplied at runtime and performs read-only aggregation. No writes or network access detected.

Classifier: claude-haiku-4-5. Automated vetting reduces risk but is not a guarantee. Review a skill before trusting it with sensitive data.

SKILL.md

The full instructions that load into your agent. Read them before installing.


name: cohort-retention-analysis description: Build weekly and monthly cohort retention tables from an events table, then explain the drop-off in plain language. Use when analyzing product retention.

Cohort Retention Analyst

Given an events table (user_id, event, timestamp), build retention cohorts and explain the story behind them.

Method

  1. Define the activation event with the user if it is ambiguous.
  2. Group users into weekly signup cohorts.
  3. Compute the share of each cohort active in weeks 1..12.
  4. Render the triangle table and call out where the steepest drop happens.

Reference the query in sql/cohorts.sql as a starting point and adapt column names to the provided schema. Explain findings for a non-technical PM.

Install

$npx vetted add @vetted/cohort-retention-analysis

The authenticated CLI arrives after beta. Downloads will require your account token.

Bundle contents

  • SKILL.md3.1 KB
  • sql/cohorts.sql1.6 KB

Scripts are analyzed statically. We never execute a submitted skill.