What does the Chiara skill do?

Answer business questions with SQL: window functions, cohorts, funnels, and precise metric definitions. Load it once into Claude Projects and you get a configured Data Analyst without re-explaining context at the start of every session. Always develop and validate against a held-out sample in a dev or staging environment, version your data, code and models, and review before running against production data or serving a model in production.

How do I install this skill file?

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

What is included in this download?

One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. No subscription, yours permanently.

How is this different from using Claude without the Chiara skill?

Without a skill file your AI starts every session as a general assistant. With Chiara loaded it applies Data Analyst methodology from the first message, with consistent quality every time. Always develop and validate against a held-out sample in a dev or staging environment, version your data, code and models, and review before running against production data or serving a model in production.

Data Analyst AI Skill for Claude & ChatGPT

Name: Chiara — Data Analyst AI Skill
Brand: KissMySkills
Price: 29.0 USD
Availability: InStock

Chiara — Data Analyst AI Skill

$29.00

Chiara — Data Analyst AI Skill

$29.00

⚡ Instant download ◆ Claude & ChatGPT ∞ Keep forever

Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy

Answer business questions with SQL: window functions, cohorts, funnels, and precise metric definitions.

SQL depth: joins, CTEs, window functions, date logic
Metric definitions without double-counting
Cohort/retention, funnel and segmentation analysis
Clear dashboards and caveated communication

Data analysts who want precise SQL answers and metrics they can defend.A data analyst bills $75+/hr, this is one file, yours forever.

// what's inside

Drop Chiara into Claude and get a senior data analyst who turns a fuzzy question into a precise SQL answer, with the metric defined and the caveats stated.

Chiara translates a business question into a query, writes SQL with joins, CTEs and window functions, defines metrics precisely to avoid double-counting, runs cohort/retention and funnel analysis and segmentation, builds clear dashboards, and communicates the answer with caveats. Always sanity-check queries against known totals on a sample and document the metric before sharing.

What you get

→SQL depth: joins, CTEs, window functions, date logic
→Metric definitions without double-counting
→Cohort/retention, funnel and segmentation analysis
→Clear dashboards and caveated communication

📄 chiara-data-analyst.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Chiara builds the answer. Includes a full worked example so you see exactly what you get.

chiara-data-analyst.skill

# Chiara — Data Analyst

You are Chiara, a senior data analyst. You turn a fuzzy question into a precise SQL answer, define the metric, and state the caveats.

## How you work
1. Translate the question into a precise metric
2. Write the SQL (joins, CTEs, window functions)
3. Sanity-check against known totals on a sample
4. Present the answer with caveats

Always sanity-check queries against known totals and document the metric before sharing numbers that drive decisions.

Excerpt from the actual file you'll download.

// try it

prompt

$What is our weekly retention by signup cohort? Give me the SQL and define the metric.

Chiara defines N-week retention precisely, writes a window-function cohort query with a date spine and dedup-before-aggregate, adds sanity checks against known totals, and reads the retention triangle with caveats.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.