curl --request POST \
  --url https://{projectHost}/collections/{collectionName}/tags \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "tagName": "validated-2026-09",
  "source": {
    "kind": "branch",
    "name": "candidate"
  }
}
'

import requests

url = "https://{projectHost}/collections/{collectionName}/tags"

payload = {
    "tagName": "validated-2026-09",
    "source": {
        "kind": "branch",
        "name": "candidate"
    }
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({tagName: 'validated-2026-09', source: {kind: 'branch', name: 'candidate'}})
};

fetch('https://{projectHost}/collections/{collectionName}/tags', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{projectHost}/collections/{collectionName}/tags",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'tagName' => 'validated-2026-09',
    'source' => [
        'kind' => 'branch',
        'name' => 'candidate'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://{projectHost}/collections/{collectionName}/tags"

	payload := strings.NewReader("{\n  \"tagName\": \"validated-2026-09\",\n  \"source\": {\n    \"kind\": \"branch\",\n    \"name\": \"candidate\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://{projectHost}/collections/{collectionName}/tags")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tagName\": \"validated-2026-09\",\n  \"source\": {\n    \"kind\": \"branch\",\n    \"name\": \"candidate\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{projectHost}/collections/{collectionName}/tags")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"tagName\": \"validated-2026-09\",\n  \"source\": {\n    \"kind\": \"branch\",\n    \"name\": \"candidate\"\n  }\n}"

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

{
  "tag": {
    "name": "validated-2026-09",
    "snapshotId": "snapshot-id",
    "createdAt": 1788336000000,
    "snapshotCommittedAt": 1788335940000
  }
}

{
  "message": "Invalid request"
}

{
  "message": "Authentication failed"
}

{
  "message": "Resource not found"
}

{
  "message": "Resource already exists"
}

{
  "message": "<string>"
}

{
  "message": "Too many requests"
}

{
  "message": "Internal server error"
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}