Data analytics skills for product managers: SQL from plain English, cohort retention analysis and A/B test reads with a ship-or-stop call.
by phuryn· Data & analyticsUnclaimed · Yours? Claim it
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About
A community plugin by Paweł Huryn, author of The Product Compass newsletter, from his PM Skills marketplace (phuryn/pm-skills). It's the data analytics part of that collection: 3 skills that teach your agent to write SQL, analyze cohorts and read A/B tests, and 3 commands that run them as guided workflows. What its skills cover - SQL queries: turns a question in plain English into SQL for BigQuery, PostgreSQL, MySQL, Snowflake or SQL Server, reading your schema from a file or a description, with comments, an explanation and performance notes - Cohort analysis: reads CSV, Excel or JSON user data, works out retention and feature adoption by cohort, charts retention heatmaps and curves, picks out the patterns and suggests follow-up research - A/B test analysis: checks sample size, test duration and sample ratio mismatch, works out the lift, p-value and confidence interval, checks guardrail metrics, and recommends ship, extend, stop or investigate Its commands - /pm-data-analytics:write-query: SQL from a plain-English question - /pm-data-analytics:analyze-cohorts: retention curves, feature adoption and engagement trends from your data, or the SQL and framework to get them - /pm-data-analytics:analyze-test: a ship, extend or stop call from summary numbers, a CSV or a screenshot from your experimentation platform How to install it In Claude Code, run /plugin marketplace add phuryn/pm-skills, then /plugin install pm-data-analytics@pm-skills. In Claude Cowork, adding the phuryn/pm-skills marketplace from GitHub installs all of its plugins, this one included. Codex CLI installs it from the same marketplace with codex plugin add pm-data-analytics@pm-skills, with the skills but not the slash commands. Other agents can use the skill folders on their own. Good to know - It's instructions for your agent, with no server, account or API key. - It doesn't connect to your database: it writes the SQL and works on the data you share or describe. - For calculations on raw data it writes Python scripts. - It's a community project by Paweł Huryn.
Once it’s added
“How large a sample do I need for 95% confidence with a 2% MDE?”
“What retention metrics should I track for a subscription app?”
“Show me monthly active users by country for Q4 2025, in BigQuery.”
“Here are the results from our checkout flow A/B test. Should we ship it?”
“Compare weekly retention for users who signed up in January and February.”
“Find users who signed up last month but never completed onboarding.”
Before you add it
Reads only
Your schema, as a file or a description · CSV, Excel or JSON data and test results you share
Makes changes · your agent can ask first
SQL queries with explanations and performance notes · Cohort retention analysis, charts and Python scripts · A/B test reports with a ship, extend or stop call, saved as Markdown
Each with its own page
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/plugin marketplace add phuryn/pm-skills /plugin install pm-data-analytics@pm-skills
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