# POST /api/v1/transactions

> Create transaction

- **Tag:** transactions
- **Operation ID:** `create_transaction_api_v1_transactions_post`

## Description

Manually create a transaction record (not synced from bank).

## Authentication

Bearer token in `Authorization` header.
Required header: `x-business-id: <business uuid>`.

## Request body

Schema: `TransactionCreateRequest`

- `amount` (integer) — Amount in cents. Positive for deposits/income, negative for withdrawals/expenses.
- `currency` (string) — Currency code (USD, CAD, AUD, EUR, or GBP). Defaults to business default currency.
- `datetime` (string · date) — Transaction date in ISO 8601 format (YYYY-MM-DD).
- `description` (string) — Human-readable description of the transaction.
- `source_account_id` (string) — UUID of the bank account (ledger) this transaction belongs to.
- `reconciled` (boolean) — Whether this transaction has been reconciled with bank statement.

## Responses

### 201 — Successful Response

Schema: `SuccessEnvelope_TransactionResponse_`

- `success` (boolean)
- `message` (string)
- `code` (string)
- `data` (TransactionResponse)

### 400 — Bad Request - Invalid input

### 401 — Unauthorized - Authentication required

### 403 — Forbidden - Insufficient permissions

### 422 — Validation Error

Schema: `HTTPValidationError`

- `detail` (array · ValidationError) → `ValidationError`
  - `loc` (array · string | integer · required)
  - `msg` (string · required)
  - `type` (string · required)
  - `input` (object)
  - `ctx` (object)

## Code samples

### cURL

```bash
curl -X POST 'https://api.ondayzero.com/api/v1/transactions' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "amount": 0,
  "currency": "string",
  "datetime": "2026-01-01",
  "description": "string",
  "source_account_id": "string",
  "reconciled": false
}'
```

### JavaScript

```javascript
const response = await fetch('https://api.ondayzero.com/api/v1/transactions', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer dz_your_token',
    'x-business-id': 'YOUR_BUSINESS_ID',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
  "amount": 0,
  "currency": "string",
  "datetime": "2026-01-01",
  "description": "string",
  "source_account_id": "string",
  "reconciled": false
}),
});
const data = await response.json();
```

### Python

```python
import httpx

headers = {
    "Authorization": "Bearer dz_your_token",
    "x-business-id": "YOUR_BUSINESS_ID",
}

payload = {
  "amount": 0,
  "currency": "string",
  "datetime": "2026-01-01",
  "description": "string",
  "source_account_id": "string",
  "reconciled": false
}

response = httpx.post("https://api.ondayzero.com/api/v1/transactions", headers=headers, json=payload)
data = response.json()
```

## See also

- HTML version: https://www.ondayzero.com/docs/reference/transactions/create-transaction
- OpenAPI slice: https://www.ondayzero.com/docs/reference/transactions/create-transaction/openapi.json
- Other endpoints in **transactions**: https://www.ondayzero.com/docs/reference/transactions