gtm-testing

Guide users through comprehensive testing of GTM tracking implementation. Prefers automated headless testing over manual steps wherever possible.

Always start with Tier 0 if the user asks "can you do it yourself" or wants automated testing. Fall back to manual tiers only for GTM container and GA4 validation, which require a browser session.

Run this tier first. It requires no browser interaction from the user and can be run entirely by Claude.

Comprehensive GTM tracking testing and validation including automated Playwright headless testing, browser console testing, GTM Preview mode validation, and GA4 DebugView verification. Use when users need to "test GTM tracking", "validate dataLayer events", "debug GTM", "check if tracking works", "automated tracking tests", "run tracking tests without opening browser", or troubleshoot tracking issues. Prioritises automated testing over manual when possible. Source: aimonk2025/google-tag-manager-automation.