# paymentMethods.save

Create or update an organization payment method with kind, label, currency, validated banking details, active flag, and whether it is a default for its currency. Updates need expectedRevision. Administrator only.

`POST /api/v1/accounting/paymentMethods.save`

Permissions: `accounting:read`, `accounting:write`, `accounting:admin` · Roles: admin · Idempotency key required · Send `expectedRevision`

MCP tool: `accounting_payment_methods_save`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `id` | string (ID) |  | The record's ID. |
| `expectedRevision` | integer |  | The record's current revision, from the last time you read it. If someone changed the record since, the request is refused with a conflict so you can reload and check before trying again. at most 9007199254740991; greater than 0. |
| `kind` | enum | Yes | Which kind of record or job this is. One of: `bank_transfer_cad`, `bank_transfer_usd`, `wire`, `interac`, `pay_link`, `other`. |
| `label` | string | Yes | 1–120 characters. |
| `currency` | string or null |  | Three-letter currency code, such as CAD or USD. |
| `details` | map | Yes |  |
| `active` | boolean |  | Whether the record is turned on. |
| `defaultForCurrency` | boolean |  |  |
| `sortOrder` | integer |  | 0 to 1000. |
| `idempotencyKey` | string | Yes | 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. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/paymentMethods.save \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "kind": "bank_transfer_cad",
  "label": "example",
  "details": {}
}'
```

Reference page: https://app.getoatmilk.com/docs/api/paymentMethods.save