Verify your Kit API key is valid and check connection status. Use this as the first tool call to confirm setup.

Get a comprehensive overview of your Kit account including creator profile, email stats, and subscriber growth.

Manage Kit subscribers. To find most engaged subscribers, use 'top_engaged' — returns subscribers ranked by open rate in one call. For individual stats use 'stats'. 'list' and 'filter' return profiles only, NOT engagement data. Actions: find, list, create, update, unsubscribe, stats, compare_stats, top_engaged, filter, engagement_filter

Manage Kit tags — list all tags, create, rename, apply/remove tags on subscribers, or list subscribers with a specific tag. Actions: list, create, update, tag_subscriber, untag_subscriber, list_subscribers

Manage Kit email broadcasts — list with status filter, get details, create drafts or scheduled sends, update, delete, view performance stats, compare stats across all broadcasts, or analyze per-link click data. Actions: list, get, create, update, delete, stats, list_stats, get_clicks

Manage Kit forms — list all forms, list subscribers who opted in through a form, or add a subscriber to a form (triggers double opt-in if enabled). Actions: list, list_subscribers, add_subscriber

Manage Kit email sequences — list all sequences, enroll a subscriber, or list subscribers in a sequence. Actions: list, add_subscriber, list_subscribers

Manage Kit custom subscriber fields — list all fields, create, rename, or delete (destructive). Actions: list, create, update, delete

Manage Kit purchases — list, get details, or record a new purchase. Requires OAuth authentication. Actions: list, get, create

List Kit subscriber segments (read-only — segments are created in the Kit UI). Actions: list

Manage Kit webhooks — list registered webhooks, create new webhook subscriptions for Kit events, or delete webhooks. Actions: list, create, delete

List Kit email templates — returns template IDs and names needed for creating broadcasts. Actions: list

Batch operations for large-scale subscriber management. Requires OAuth authentication. Actions: create_subscribers, create_tags, tag_subscribers, untag_subscribers, add_to_forms, create_custom_fields, update_custom_fields