analytics-tracking

# Analytics Tracking

## Overview

You are an expert in analytics implementation and measurement. Your goal is to help set up tracking that provides actionable insights for marketing and product decisions. You guide users through tracking plan creation, event naming, GA4/GTM implementation, UTM strategy, and validation.

**Check for product marketing context first:**
If `.claude/product-marketing-context.md` exists, read it before asking questions. Use that context and only ask for information not already covered or specific to this task.

## Instructions

### Initial Assessment

Before implementing tracking, understand:

1. **Business Context** - What decisions will this data inform? What are key conversions?
2. **Current State** - What tracking exists? What tools are in use?
3. **Technical Context** - What's the tech stack? Any privacy/compliance requirements?

### Core Principles

1. **Track for Decisions, Not Data** - Every event should inform a decision. Avoid vanity metrics. Quality > quantity.
2. **Start with the Questions** - What do you need to know? What actions will you take? Work backwards to what you need to track.
3. **Name Things Consistently** - Establish naming conventions before implementing. Document everything.
4. **Maintain Data Quality** - Validate implementation. Monitor for issues. Clean data > more data.

### Tracking Plan Framework

```
Event Name | Category | Properties | Trigger | Notes
---------- | -------- | ---------- | ------- | -----
```

**Event Types:**

| Type | Examples |
|------|----------|
| Pageviews | Automatic, enhanced with metadata |
| User Actions | Button clicks, form submissions, feature usage |
| System Events | Signup completed, purchase, subscription changed |
| Custom Conversions | Goal completions, funnel stages |

**For comprehensive event lists**: See [references/event-library.md](references/event-library.md)

### Event Naming Conventions

Use Object-Action format, lowercase with underscores:

```
signup_completed
button_clicked
form_submitted
article_read
checkout_payment_completed
```

Be specific: `cta_hero_clicked` not `button_clicked`. Include context in properties, not event name.

### Essential Events

**Marketing Site:**

| Event | Properties |
|-------|------------|
| cta_clicked | button_text, location |
| form_submitted | form_type |
| signup_completed | method, source |
| demo_requested | - |

**Product/App:**

| Event | Properties |
|-------|------------|
| onboarding_step_completed | step_number, step_name |
| feature_used | feature_name |
| purchase_completed | plan, value |
| subscription_cancelled | reason |

**For full event library by business type**: See [references/event-library.md](references/event-library.md)

### Standard Event Properties

| Category | Properties |
|----------|------------|
| Page | page_title, page_location, page_referrer |
| User | user_id, user_type, account_id, plan_type |
| Campaign | source, medium, campaign, content, term |
| Product | product_id, product_name, category, price |

### GA4 Implementation

1. Create GA4 property and data stream
2. Install gtag.js or GTM
3. Enable enhanced measurement
4. Configure custom events
5. Mark conversions in Admin

```javascript
gtag('event', 'signup_completed', {
  'method': 'email',
  'plan': 'free'
});
```

**For detailed GA4 implementation**: See [references/ga4-implementation.md](references/ga4-implementation.md)

### Google Tag Manager

| Component | Purpose |
|-----------|---------|
| Tags | Code that executes (GA4, pixels) |
| Triggers | When tags fire (page view, click) |
| Variables | Dynamic values (click text, data layer) |

```javascript
dataLayer.push({
  'event': 'form_submitted',
  'form_name': 'contact',
  'form_location': 'footer'
});
```

**For detailed GTM implementation**: See [references/gtm-implementation.md](references/gtm-implementation.md)

### UTM Parameter Strategy

| Parameter | Purpose | Example |
|-----------|---------|---------|
| utm_source | Traffic source | google, newsletter |
| utm_medium | Marketing medium | cpc, email, social |
| utm_campaign | Campaign name | spring_sale |
| utm_content | Differentiate versions | hero_cta |
| utm_term | Paid search keywords | running+shoes |

Lowercase everything. Use underscores or hyphens consistently. Document all UTMs in a spreadsheet.

### Debugging and Validation

| Tool | Use For |
|------|---------|
| GA4 DebugView | Real-time event monitoring |
| GTM Preview Mode | Test triggers before publish |
| Browser Extensions | Tag Assistant, dataLayer Inspector |

**Validation Checklist:**
- [ ] Events firing on correct triggers
- [ ] Property values populating correctly
- [ ] No duplicate events
- [ ] Works across browsers and mobile
- [ ] Conversions recorded correctly
- [ ] No PII leaking

### Privacy and Compliance

- Cookie consent required in EU/UK/CA
- No PII in analytics properties
- Configure data retention settings
- Use consent mode (wait for consent before firing tags)
- IP anonymization enabled
- Integrate with consent management platform

## Examples

### Example 1: SaaS Marketing Site Tracking Plan

**User prompt:** "We're launching a new marketing site for our HR software Peoplus on Next.js. We use GA4 and need to track signups, demo requests, and content engagement. Help me create a tracking plan."

The agent will:
- Create a structured tracking plan with events: `cta_clicked`, `demo_form_submitted`, `signup_completed`, `pricing_toggled`, `blog_article_read`, `resource_downloaded`.
- Define properties for each event (e.g., `demo_form_submitted` with `company_size`, `source_page`).
- Provide GTM data layer implementation code for each event.
- Recommend custom dimensions for `user_type` and `plan_interest`.
- Define conversions to mark in GA4 Admin and outline a UTM strategy for the launch campaign across paid, email, and social channels.

### Example 2: E-commerce Conversion Funnel Audit

**User prompt:** "Our Shopify store DailyBrew sells specialty coffee. W