Get the authenticated Splitwise user's profile (id, first_name, last_name, email). Use the returned id when building custom expense splits.

Get another Splitwise user's profile by id.

Update the current user's profile fields. id must be the current user's id.

List all Splitwise groups the current user belongs to. Returns id, name, and members for each group. Use this to resolve a group name to its id.

Get details of a single Splitwise group including all members and balances.

Create a new Splitwise group.

Add a user to a Splitwise group. Provide user_id (preferred, use sw_list_friends to resolve a name) or first_name + last_name + email to invite by email.

Remove a user from a Splitwise group. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it removes the user.

Soft-delete a Splitwise group. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it deletes.

Restore a soft-deleted Splitwise group.

List all Splitwise friends with their id, first_name, last_name, and email. Use this to resolve a friend's name to a user_id before adding them to a group or building a custom expense split.

Add a Splitwise friend by email (sends them an invite). Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it adds the friend.

Remove a Splitwise friendship by user id. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it removes the friendship.

List or search Splitwise expenses. All filters are optional. Use group_id to filter by group, dated_after/dated_before for date ranges.

Get full details of a single Splitwise expense by id.

Create a Splitwise expense. Use split_equally:true to split evenly among group members, or provide a users array for custom per-person splits (paid_share and owed_share as decimal strings like "25.00"). cost must be a decimal string. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it creates the expense.

Edit an existing Splitwise expense. Provide expense_id and any fields to change. For custom split updates, the full users array must be provided (the API replaces the entire split). Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it updates the expense.

Soft-delete a Splitwise expense by id. Returns {success: true} on success. Use sw_undelete_expense to restore. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it deletes.

Restore a soft-deleted Splitwise expense.

Get recent Splitwise activity notifications for the current user.

Get the hierarchical list of Splitwise expense categories. Use the returned id as category_id when creating expenses.

Get all Splitwise-supported currency codes and units. Use the currency_code value when creating expenses in non-default currencies.

Get all comments on a Splitwise expense.

Add a comment to a Splitwise expense (visible to other participants). Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it posts.

Delete a comment by id. Without confirm:true this returns a dry-run preview and makes NO network call; with confirm:true it deletes.