data-gtm-datalayer

name	data-gtm-datalayer
description	Generate production-ready GTM tracking code with dataLayer pushes and HTML attributes. Use when adding analytics tracking.
allowed-tools	Read, Glob, Grep, Write($JAAN_OUTPUTS_DIR/**), Edit(jaan-to/config/settings.yaml)
argument-hint	["prd-path | tracking-description | (interactive)"]
disable-model-invocation	true
license	PROPRIETARY

data-gtm-datalayer

Generate production-ready GTM tracking code with enforced naming conventions.

Context Files

• $JAAN_LEARN_DIR/jaan-to-data-gtm-datalayer.learn.md - Past lessons (loaded in Pre-Execution)
• $JAAN_TEMPLATES_DIR/jaan-to-data-gtm-datalayer.template.md - Output template
• ${CLAUDE_PLUGIN_ROOT}/docs/extending/language-protocol.md - Language resolution protocol

Input

Tracking Request: $ARGUMENTS

• If PRD path provided → Read and suggest tracking points
• If text description provided → Design tracking based on input
• If empty → Start interactive wizard

---

Pre-Execution Protocol

MANDATORY — Read and execute ALL steps in: ${CLAUDE_PLUGIN_ROOT}/docs/extending/pre-execution-protocol.md Skill name: data-gtm-datalayer Execute: Step 0 (Init Guard) → A (Load Lessons) → B (Resolve Template) → C (Offer Template Seeding)

Language Settings

Read and apply language protocol: ${CLAUDE_PLUGIN_ROOT}/docs/extending/language-protocol.md Override field for this skill: language_data-gtm-datalayer

---

PHASE 1: Analysis (Read-Only)

Step 1: Determine Input Mode

Check $ARGUMENTS:

Mode A - PRD Input: If path to $JAAN_OUTPUTS_DIR/ or PRD text provided:

1. Read/parse the PRD
2. Identify trackable interactions (buttons, forms, modals, etc.)
3. Suggest tracking points with types:
   • Impressions: modal displays, section visibility
   • Clicks: buttons, links, interactive elements
   • Include non-happy paths (close, dismiss, cancel)
4. Ask user to confirm/modify suggestions

Mode B - Description Input: If text description of what to track:

1. Parse the description
2. Ask clarifying questions if needed
3. Suggest tracking structure

Mode C - Interactive Wizard: If no arguments, ask questions in order:

Question 1: Tracking Type

"What type of tracking do you need?"

1. click-html - HTML attributes (data-al-*) for simple clicks
2. click-datalayer - dataLayer.push for flow-based clicks
3. impression - dataLayer.push for visibility/exposure events

Question 2: Feature Name

"What is the feature name? (e.g., player, checkout, onboarding)"

Apply naming rules:

• Convert to lowercase-kebab-case: "Play Button" → "play-button"
• If unclear (e.g., "btn1", "x"), ask: "What does '{input}' represent?"
• Suggest better name if abbreviated: "nav" → suggest "navigation" or "navbar"
• Confirm conversion: "Feature 'Play Button' → 'play-button' - OK? [y/edit]"

Question 3: Item Name

"What is the item name? (e.g., play, pause, submit, modal-purchase)"

Apply same naming rules as feature.

Question 4: Action (click-datalayer only)

"What is the action? (default: Click)"

If user provides custom action, apply naming rules. If empty/skipped, use "Click".

Question 5: Additional Params (optional)

"Any additional params? Enter as key=value, one per line. (or 'skip')"

Example:

source=modal
count=3
active=true

Parse into object with ES5 type detection:

• true / false → bool (no quotes): true
• Numeric values (e.g., 3, 42) → int (no quotes): 3
• Everything else → string (with quotes): "modal"

If none provided, omit params entirely from output.

Step 2: Confirm Values

Show full dataLayer preview before generating:

For click-html:

TRACKING SUMMARY
────────────────────────────────────────

<button data-al-feature="{feature}" data-al-item="{item}">...</button>

────────────────────────────────────────

For click-datalayer (without params):

TRACKING SUMMARY
────────────────────────────────────────

dataLayer.push({
  event: "al_tracker_custom",
  al: {
    feature: "{feature}",
    item: "{item}",
    action: "{action}"
  },
  _clear: true
});

────────────────────────────────────────

For click-datalayer (with params):

TRACKING SUMMARY
────────────────────────────────────────

dataLayer.push({
  event: "al_tracker_custom",
  al: {
    feature: "{feature}",
    item: "{item}",
    action: "{action}",
    params: {
      source: "modal",
      count: 3,
      active: true,
    }
  },
  _clear: true
});

────────────────────────────────────────

Values are typed: strings in "quotes", ints/bools without quotes.

For impression (without params):

TRACKING SUMMARY
────────────────────────────────────────

dataLayer.push({
  event: "al_tracker_impression",
  al: {
    feature: "{feature}",
    item: "{item}"
  },
  _clear: true
});

────────────────────────────────────────

For impression (with params):

TRACKING SUMMARY
────────────────────────────────────────

dataLayer.push({
  event: "al_tracker_impression",
  al: {
    feature: "{feature}",
    item: "{item}",
    params: {
      variant: "A",
      position: 1,
      visible: true,
    }
  },
  _clear: true
});

────────────────────────────────────────

"Generate tracking code with these values? [y/edit]"

---

HARD STOP - Human Review Check

Show the full dataLayer preview above (not just field summary).

"Proceed with code generation? [y/n/edit]"

Do NOT proceed to Phase 2 without explicit approval.

---

PHASE 2: Generation (Write Phase)

Step 3: Generate Code

Based on tracking type, generate the appropriate code:

Type: click-html

<element data-al-feature="{feature}" data-al-item="{item}">{element content}</element>

Example output:

<button data-al-feature="player" data-al-item="pause">Pause</button>

Type: click-datalayer

Without params:

dataLayer.push({
  event: "al_tracker_custom",
  al: {
    feature: "{feature}",
    item: "{item}",
    action: "{action}"
  },
  _clear: true
});

With params (ES5 typed values):

dataLayer.push({
  event: "al_tracker_custom",
  al: {
    feature: "{feature}",
    item: "{item}",
    action: "{action}",
    params: {
      {key1}: {value1},  // string: "value", int: 3, bool: true
      {key2}: {value2},
    }
  },
  _clear: true
});

Type: impression

Without params:

dataLayer.push({
  event: "al_tracker_impression",
  al: {
    feature: "{feature}",
    item: "{item}"
  },
  _clear: true
});

With params (ES5 typed values):

dataLayer.push({
  event: "al_tracker_impression",
  al: {
    feature: "{feature}",
    item: "{item}",
    params: {
      {key1}: {value1},  // string: "value", int: 3, bool: true
      {key2}: {value2},
    }
  },
  _clear: true
});

Step 4: Quality Check

Before preview, verify:

• event key present in all dataLayer pushes
• Feature and item are non-empty strings
• Feature/item/action are lowercase-kebab-case
• No abbreviations without user clarification
• Names are descriptive and understandable
• User-provided strings preserved (after kebab conversion)
• _clear: true included in all dataLayer pushes
• No empty params: {} (omit entirely if no params)
• Param values use correct ES5 types (string in "quotes", int/bool without)
• Output is deterministic (same input → same code)

If any check fails, fix before preview.

Step 5: Preview & Approval

Display the generated code in conversation:

GENERATED TRACKING CODE
───────────────────────

{code block}

EXAMPLE WITH VALUES
───────────────────
{example showing real values based on user input}

"Save tracking code to output? [y/n]"

Step 5.5: Generate ID and Folder Structure

If approved, set up the output structure:

1. Source ID generator utility:

source "${CLAUDE_PLUGIN_ROOT}/scripts/lib/id-generator.sh"

2. Generate sequential ID and output paths:

# Define subdomain directory
SUBDOMAIN_DIR="$JAAN_OUTPUTS_DIR/data/gtm"
mkdir -p "$SUBDOMAIN_DIR"

# Generate next ID
NEXT_ID=$(generate_next_id "$SUBDOMAIN_DIR")

# Create folder and file paths (slug from feature-item, e.g., "player-pause")
slug="{lowercase-hyphenated-feature-item}"
OUTPUT_FOLDER="${SUBDOMAIN_DIR}/${NEXT_ID}-${slug}"
MAIN_FILE="${OUTPUT_FOLDER}/${NEXT_ID}-gtm-${slug}.md"

3. Preview output configuration:

Output Configuration

• ID: {NEXT_ID}
• Folder: $JAAN_OUTPUTS_DIR/data/gtm/{NEXT_ID}-{slug}/
• Main file: {NEXT_ID}-gtm-{slug}.md

Step 6: Write Output

1. Create output folder:

mkdir -p "$OUTPUT_FOLDER"

2. Write tracking code to main file using template:

# Use template from $JAAN_TEMPLATES_DIR/jaan-to-data-gtm-datalayer.template.md
cat > "$MAIN_FILE" <<'EOF'
{generated tracking documentation with Executive Summary}
EOF

3. Update subdomain index:

source "${CLAUDE_PLUGIN_ROOT}/scripts/lib/index-updater.sh"
add_to_index \
  "$SUBDOMAIN_DIR/README.md" \
  "$NEXT_ID" \
  "${NEXT_ID}-${slug}" \
  "{Tracking Title}" \
  "{1-2 sentence summary: feature-item tracking with event type}"

4. Confirm completion:

✓ Tracking code written to: $JAAN_OUTPUTS_DIR/data/gtm/{NEXT_ID}-{slug}/{NEXT_ID}-gtm-{slug}.md ✓ Index updated: $JAAN_OUTPUTS_DIR/data/gtm/README.md

Step 7: Capture Feedback

"Any feedback? [y/n]"

If yes:

"[1] Fix now [2] Learn for future [3] Both"

• Option 1: Update output, re-preview, re-write
• Option 2: Run /jaan-to:learn-add data-gtm-datalayer "{feedback}"
• Option 3: Do both

---

Skill Alignment

• Two-phase workflow with HARD STOP for human approval
• Template-driven output structure
• Generic and tech-stack agnostic
• Output to standardized $JAAN_OUTPUTS_DIR path

Definition of Done

• User confirmed tracking values
• Code generated and displayed in conversation
• Markdown file written to $JAAN_OUTPUTS_DIR/data/gtm/{slug}/
• User can copy-paste and use immediately