## Add Watchlist Item

`client.V1.Watchlist.AddWatchlistItem(ctx, watchlistID, body) (*V1WatchlistAddWatchlistItemResponse, error)`

**post** `/v1/watchlists/{watchlist_id}/items`

Add an instrument to a watchlist

### Parameters

- `watchlistID string`

- `body V1WatchlistAddWatchlistItemParams`

  - `InstrumentID param.Field[InstrumentIDOrSymbol]`

    OEMS instrument UUID

### Returns

- `type V1WatchlistAddWatchlistItemResponse struct{…}`

  - `Data AddWatchlistItemData`

    Response data for adding a watchlist item

    - `ItemID string`

      ID of the created item

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/clear-street/clear-street-go"
  "github.com/clear-street/clear-street-go/option"
)

func main() {
  client := clearstreet.NewClient(
    option.WithAPIKey("My API Key"),
  )
  response, err := client.V1.Watchlist.AddWatchlistItem(
    context.TODO(),
    "550e8400-e29b-41d4-a716-446655440000",
    clearstreet.V1WatchlistAddWatchlistItemParams{
      InstrumentID: "182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e",
    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response)
}
```

#### Response

```json
{
  "data": {
    "item_id": "770e8400-e29b-41d4-a716-446655440002"
  },
  "error": null,
  "metadata": {
    "request_id": "b2c3d4e5-f6a7-8901-2345-678901bcdefg"
  }
}
```