get_link_analyticsreadlinks.viewClick-through rate and traffic sources for tracked links.
| link_id | string? | Optional. Scope to one tracked link; omit for all. |
| days | integer | Window in days. Defaults to 30. |
Per-link: clicks, unique_clicks, click_rate, top_sources, top_devices, top_countries.
"Which traffic source converts best on my pricing link?"