evensplit-iota.vercel.app
Settle shared trip costs and see exactly how every balance was worked out.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 3 · Act 9 · Transact 2 · Score: Not yet scored
Tool inspector
update_expense
Correct an expense that is already logged. Pass only the fields that change. Use this when somebody remembers that a person was not actually there, or that the amount was wrong.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
expense |
string | yes | The expense to change, by description or id. |
description |
string | no | New name for the expense. |
amount |
number | no | Amount in EUR, for example 90 or 12.50. Never in cents. |
paidBy |
string | no | Change who paid. |
participants |
array | no | Replace the full list of people sharing this cost. |
removeParticipants |
array | no | Take these people off the expense, leaving the rest as they are. |
addParticipants |
array | no | Add these people to the expense. |
splitMode |
string | no | — |
weights |
object | no | Name to shares, for splitMode "weight". |
exactAmounts |
object | no | Name to amount, for splitMode "exact". |
date |
string | no | New date as YYYY-MM-DD. |
Raw JSON schema
{
"type": "object",
"properties": {
"expense": {
"type": "string",
"description": "The expense to change, by description or id."
},
"description": {
"type": "string",
"description": "New name for the expense."
},
"amount": {
"type": "number",
"description": "Amount in EUR, for example 90 or 12.50. Never in cents."
},
"paidBy": {
"type": "string",
"description": "Change who paid."
},
"participants": {
"type": "array",
"items": {
"type": "string"
},
"description": "Replace the full list of people sharing this cost."
},
"removeParticipants": {
"type": "array",
"items": {
"type": "string"
},
"description": "Take these people off the expense, leaving the rest as they are."
},
"addParticipants": {
"type": "array",
"items": {
"type": "string"
},
"description": "Add these people to the expense."
},
"splitMode": {
"type": "string",
"enum": [
"equal",
"weight",
"exact"
]
},
"weights": {
"type": "object",
"additionalProperties": {
"type": "number"
},
"description": "Name to shares, for splitMode \"weight\"."
},
"exactAmounts": {
"type": "object",
"additionalProperties": {
"type": "number"
},
"description": "Name to amount, for splitMode \"exact\"."
},
"date": {
"type": "string",
"description": "New date as YYYY-MM-DD."
}
},
"required": [
"expense"
]
}
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