> For the complete documentation index, see [llms.txt](https://circular-protocol.gitbook.io/standard-apis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://circular-protocol.gitbook.io/standard-apis/api-docs/go/mainnet-integration.md).

# Mainnet Integration

For using the Mainnet change the NAG url to `https://circularlabs.io/NAG_Mainnet.php?cep=` with the setNAGURL method.

```go
package utils

import (
	"github.com/circular-protocol/circular-go/circular_protocol_api"
)

func main(){
	circular_protocol_api.SetNAGURL("https://circularlabs.io/NAG_Mainnet.php?cep=")
}
```