Track and split Wanderlog trip expenses with AI

1. Open the trip plan and go to the "$" tab in the Wanderlog app, or the "$" section of the trip on the website.
2. Click "Set a budget" once, so Wanderlog can show how close the estimated cost is getting to it.
3. Click "Add expense" for every bill, enter the amount in the currency you paid, pick a category and choose the tripmates who share it; a Wanderlog expense can also be tied to a place, an activity or a reservation in the plan.
4. Check the Wanderlog breakdown by category and day and the record of who owes whom before the group settles up at the end of the trip.
5. Each receipt is its own form on a phone, often entered a day after it was paid, and a missing or doubled entry only shows up when someone questions the balance.

Log today's receipts in the Portugal trip, split the dinners with Maya and Tom, and tell me where we stand against our 2,000 EUR budget.

1. 01

   Read the trip before writing

   The agent takes the tripmates from list_trips and the expenses already logged from list_expenses. Names in your message are matched to tripmate IDs. A name that is not on the trip stops the run with a question, because split_with only accepts people who are part of this trip.

2. 02

   Turn each receipt into one expense

   From a receipt photo or a line you typed, the agent takes the total, the currency printed on it and the day it was paid, not the day you sent it. A bill paid partly in cash and partly by card stays one expense with the full total.

3. 03

   Skip what is already there

   Each new entry is compared by amount, currency and date with the expenses already on the trip. A hotel or flight cost that already appears is reported as a likely duplicate and left out, so the budget is not counted twice.

4. 04

   Keep the categories the group already uses

   The agent reuses the categories present on the trip, so dinner does not end up split across food, dinner and restaurants. A receipt it cannot place, such as a pharmacy bill, goes under the closest existing category and is named in the report for you to check.

5. 05

   Show the batch, then write with your OK

   Before anything is written, the agent lists the day's receipts with amount, category and split. add_expense then asks for your OK on each call, because a split changes what tripmates owe; you can switch that off for nightly runs.

6. 06

   Report against the budget

   After writing, list_expenses gives totals by category in the trip's home currency. The agent compares them with the budget you named and points at the category growing fastest.

Portugal 2027, 13 May: 5 receipts read, 4 added after your OK.
Dinner at Cervejaria Ramiro, 86.40 EUR, food, split with Maya Novak and Tom Reyes.
Train Lisbon to Sintra, 13.20 EUR, transport, not split.
Pena Palace tickets, 60.00 EUR, activities, split three ways.
Skipped: Memmo Alfama, 312.00 EUR, already on the trip for 12 May.
Spent so far: 1,284 EUR of your 2,000 EUR budget. Food is the largest category at 527 EUR.

• Wanderlog lets you enter an expense in the foreign currency you spent and shows the trip total in your home currency.
• The Wanderlog "$" tab sorts each expense under the category picked when it is entered and charts spending per category and per day.
• The Wanderlog app keeps a record of who paid for what and how much everyone owes, and tripmates settle the debts between them inside the app.
• A Wanderlog expense can belong to a place, an activity or a reservation in the trip plan, and all of them count toward the budget set with "Set a budget".
• The Wanderlog mobile app lets you view and edit expenses without a connection.

add_expense asks for your OK by default. To run it daily without you, switch confirmation off for that tool in your dashboard.

Sources: Wanderlog Help: Add an expense · Wanderlog Help: Set a budget · Wanderlog budgeting and expense splitting (vendor) · Wanderlog on the App Store (vendor listing)

curl https://cotlet.dev/api/v1/wanderlog/add_expense \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"trip_id":"tr_8kQ2mZ","amount":"86.40","currency":"EUR","category":"food","description":"Dinner at Cervejaria Ramiro","date":"2027-05-13","split_with":["tm_41a","tm_52c"]}'

{
  "expense_id": "ex_72d1",
  "trip_id": "tr_8kQ2mZ",
  "amount": "64.50",
  "currency": "EUR",
  "category": "food",
  "date": "2027-05-13",
  "split_with": []
}

MCP: add https://cotlet.dev/mcp/v1 with the same key; the tool is wanderlog_add_expense. Example data.

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