> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.zip.tax/v-5-0/api-reference/system/get-metadata/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.zip.tax/_mcp/server.

# Get System Metadata

GET https://api.zip-tax.com/system/metadata

Returns system metadata including version and environment information

Reference: https://docs.zip.tax/api-reference/system/get-metadata

## Response

### 200

OK

- `go_version` (string, required) — Go runtime version the running binary was built with.
- `hostname` (string, required) — Opaque identifier for the instance serving the request. Stable for the life of that instance and changes when it restarts. Useful for telling support which instance handled a request; it is not a resolvable hostname.

## Examples

**Response**

```json
{
  "go_version": "go_version",
  "hostname": "hostname"
}
```

**SDK Code**

```python
import requests

url = "https://api.zip-tax.com/system/metadata"

response = requests.get(url)

print(response.json())
```

```javascript
const url = 'https://api.zip-tax.com/system/metadata';
const options = {method: 'GET'};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.zip-tax.com/system/metadata"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.zip-tax.com/system/metadata")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.zip-tax.com/system/metadata")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.zip-tax.com/system/metadata');

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.zip-tax.com/system/metadata");
var request = new RestRequest(Method.GET);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let request = NSMutableURLRequest(url: NSURL(string: "https://api.zip-tax.com/system/metadata")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```