ga4-custom-defslisted

# GA4: Custom Dimensions and Metrics Scope required: `analytics.edit`. ## Limits (standard properties, GA4 360 in parens) - Event-scoped custom dimensions: 50 (125) - User-scoped custom dimensions: 25 (100) - Item-scoped custom dimensions: 10 (25) - Custom metrics: 50 (125) Before creating, list current definitions to check headroom: ``` python scripts/ga4_admin.py --property X --custom-defs --json ``` ## Commands | Intent | Command | |--------|---------| | Add event-scoped dimension | `python scripts/ga4_admin.py --property X --add-custom-dim --parameter-name brand --display-name "Brand" --scope EVENT` | | Add item-scoped dimension | `python scripts/ga4_admin.py --property X --add-custom-dim --parameter-name item_brand --display-name "Item brand" --scope ITEM` | | Add custom metric | `python scripts/ga4_admin.py --property X --add-custom-metric --parameter-name shipping_value --display-name "Shipping value" --measurement-unit CURRENCY` | | Archive dimension | `python scripts/ga4_admin.py --archive-custom-dim properties/X/customDimensions/123 --json` | | Archive metric | `python scripts/ga4_admin.py --archive-custom-metric properties/X/customMetrics/123 --json` | ## Validation The script validates `parameter_name` before calling the API: - Must start with a letter - May contain letters, digits, underscores - Length ≤ 40 (event-scoped) or 24 (user-scoped) - Scope must be `EVENT`, `USER`, or `ITEM` ## When to use - **EVENT**: per-event metadata that varies across hi