Splitwise API Documentation

This is the complete API documentation for connecting to the Splitwise API using MindCloud's Universal API. If you are new to MindCloud, start with the Introduction to see how one API can sit in front of many different apps.

MindCloud is an integration company that offers one normalized API to access 3,100+ apps from a single place. It cleans up provider-specific quirks, keeps requests and responses consistent, and centralizes authentication so you do not need to manage separate flows for every app. Browse other apps.

Meet Splitwise: Track shared expenses, balances, groups, and friends. Keep reading to get started.

Quickstart

Before you run your first Splitwise request, you need three things:

1. A MindCloud account — sign in or create an account at MindCloud.
2. A MindCloud API Key — create one in API Keys. Keep it on your server.
3. At least one Splitwise connection — create or choose one in Connections. Note its connectionId.

Every Splitwise action uses the same URL pattern:

POST https://connect.mindcloud.co/v2/universal/apps/splitwise/actions/{actionSlug}/run

You need a MindCloud API Key and a Splitwise connection. Then call an action such as Get Current User:

curl --request POST \
  --url "https://connect.mindcloud.co/v2/universal/apps/splitwise/actions/get-current-user/run" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "connectionId": "$CONNECTION_ID",
  "arguments": {}
}'

Every response comes back in the same envelope, with your rows in a data array:

{
  "success": true,
  "data": [
    { "id": "1042", "name": "Ava" }
  ],
  "meta": {}
}

After your first request works, use Shape your requests to control arguments, pagination, filtering, fields, and errors.

Authenticate with a MindCloud API Key plus a connectionId for your Splitwise account. See Splitwise API Authentication for the full flow and how to get your connection credentials.

Splitwise actions

All 17 published actions for this Splitwise version. Each page documents the endpoint, arguments, and response controls.

• POSTCreate Comment
• POSTCreate Expense
• DELETEDelete Comment
• DELETEDelete Expense
• GETGet Current User
• GETGet Expense
• GETGet Group
• GETGet User
• GETList Expense Comments
• GETList Expenses
• GETList Friends
• GETList Groups
• GETList Notifications
• GETList Supported Categories
• GETList Supported Currencies
• PUTRestore Expense
• PUTUpdate Expense

Related apps

More apps on the Universal API, behind the same REST shape. Or browse all apps.

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