`reconciliation.close`

Explicitly close an account period after its opening, movement and closing balances reconcile. Finance access required; reopening needs an administrator and the accounting:admin scope (reconciliation.reopen).

POST/api/v1/accounting/reconciliation.close

Permissions

accounting:readaccounting:write

Who can call it

admin, finance

Retries

Idempotency key required

MCP

Not offered over MCP: Accountants' close periods grant isn't offered over MCP yet: phase 1 is read and comment only.

Fields

accountIdstring (ID)Required
The ID of a bank, card or payment account, from accounts.list.
fromstringRequired
The first date to include, as YYYY-MM-DD.
tostringRequired
The last date to include, as YYYY-MM-DD.
openingMinorstringRequired
An amount in cents (the currency's smallest unit), written as a whole-number string such as "1250" for $12.50.
Whole number written as a string, may be negative
closingMinorstringRequired
An amount in cents (the currency's smallest unit), written as a whole-number string such as "1250" for $12.50.
Whole number written as a string, may be negative
currencystringRequired
Three-letter currency code, such as CAD or USD.
idempotencyKeystringRequired
Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match.
8–200 characters

curl https://app.getoatmilk.com/api/v1/accounting/reconciliation.close \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
  "from": "2026-09-01",
  "to": "2026-09-30",
  "openingMinor": "1250",
  "closingMinor": "1250",
  "currency": "CAD"
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/reconciliation.close", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
    "from": "2026-09-01",
    "to": "2026-09-30",
    "openingMinor": "1250",
    "closingMinor": "1250",
    "currency": "CAD"
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os
import uuid

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/reconciliation.close",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
        "from": "2026-09-01",
        "to": "2026-09-30",
        "openingMinor": "1250",
        "closingMinor": "1250",
        "currency": "CAD",
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Response

{
  "data": { … }
}

Try it

Checks your input with this action’s real schema and answers like the API, with synthetic data. No key needed, and nothing changes.

Input

POST/api/v1/accounting/reconciliation.close

curl https://app.getoatmilk.com/api/v1/accounting/reconciliation.close \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
  "from": "2026-09-01",
  "to": "2026-09-30",
  "openingMinor": "1250",
  "closingMinor": "1250",
  "currency": "CAD"
}'

const response = await fetch("https://app.getoatmilk.com/api/v1/accounting/reconciliation.close", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.OATMILK_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
    "from": "2026-09-01",
    "to": "2026-09-30",
    "openingMinor": "1250",
    "closingMinor": "1250",
    "currency": "CAD"
  }),
});
const { data, error } = await response.json();
if (!response.ok) throw new Error(`${error.code}: ${error.message}`);
console.log(data);

import os
import uuid

import requests

response = requests.post(
    "https://app.getoatmilk.com/api/v1/accounting/reconciliation.close",
    headers={
        "Authorization": f"Bearer {os.environ['OATMILK_API_KEY']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "accountId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a",
        "from": "2026-09-01",
        "to": "2026-09-30",
        "openingMinor": "1250",
        "closingMinor": "1250",
        "currency": "CAD",
    },
    timeout=30,
)
payload = response.json()
if not response.ok:
    raise RuntimeError(f"{payload['error']['code']}: {payload['error']['message']}")
print(payload["data"])

Fields

Example

Try it