# Query Cash-In by Tag

Queries PIX transactions that match a tag (prefix of the `transaction_id`).

## Endpoint

```
GET /api/external/transactions/tag/:tag
```

## Headers

| Header | Type | Required | Description |
|--------|------|----------|-------------|
| `Authorization` | String | Yes | `ApiKey {client_id}:{client_secret}` |
| `X-Key-Case` | String | No | Set to `camelCase` to receive response fields in camelCase (default is snake_case) |

## Path Parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `tag` | String | Yes | Prefix of the `transaction_id` for search |

::: tip Tag prefixes
The `transaction_id` follows the pattern `PIXIN` (receipts) and `PIXOUT` (sends) followed by the date. Use `PIXIN20260307` to search all receipts on 2026-03-07.
:::

## Example

```bash
curl -X GET https://api.monetarie.com/api/external/transactions/tag/PIXIN20260307 \
  -H "Authorization: ApiKey $CLIENT_ID:$CLIENT_SECRET"
```

## Success Response (200)

```json
{
  "worked": true,
  "data": [
    {
      "id": "a1b2c3d4e5f64a7b8c9d0e1f2a3b4c5d",
      "transaction_id": "7popu57v6us7p6pcicgq12345",
      "end_to_end_id": "E46026562202603071530000001",
      "external_id": "order-9876",
      "type": "pix",
      "status": "settled",
      "amount": 300000,
      "fee_amount": 0,
      "net_amount": 300000,
      "direction": "inbound",
      "counterparty_name": "Maria Santos",
      "created_at": "2026-03-07T15:30:00Z",
      "completed_at": "2026-03-07T15:30:02Z"
    },
    {
      "id": "f7e8d9c0b1a24c3d9e8f7a6b5c4d3e2f",
      "transaction_id": "7popu57v6us7p6pcicgq67890",
      "end_to_end_id": "E46026562202603071545000002",
      "external_id": null,
      "type": "pix",
      "status": "settled",
      "amount": 2500000,
      "fee_amount": 0,
      "net_amount": 2500000,
      "direction": "inbound",
      "counterparty_name": "Joao Silva",
      "created_at": "2026-03-07T15:45:00Z",
      "completed_at": "2026-03-07T15:45:03Z"
    }
  ]
}
```

| Field | Type | Description |
|-------|------|-------------|
| `worked` | Boolean | `true` indicates operation success |
| `data` | Array | List of transactions matching the tag (hard limit of 50 records per query, ordered by `started_at DESC`) |

Each object in the array follows the same structure described in [Query by ID](/en/pix-cashin-status). Monetary values in **base units** (÷ 10,000 for BRL).

::: warning Limit and pagination
The endpoint returns at most **50 results** per query, ordered from most recent to oldest (`started_at DESC`). **There are no pagination parameters** -- if you need more results, combine the tag with a narrower date filter (e.g., `PIXIN20260307` for the specific day) or use [Query by E2E](/en/pix-cashin-e2e) for individual entries.
:::

## Success Response -- No Results (200)

```json
{
  "worked": true,
  "data": []
}
```

## Error Response (401)

```json
{
  "error": {
    "status": 401,
    "message": "Missing API key credentials. Use Authorization: ApiKey <client_id>:<client_secret>"
  }
}
```

::: warning Cash-In and Cash-Out
This endpoint returns both inbound and outbound transactions that match the tag. Filter by the `PIXIN` prefix to get only receipts or `PIXOUT` to get only sends.
:::