curl --request POST \
  --url https://api.technologychecker.io/v1/segments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "US ecommerce, 51-200"
}
'

import requests

url = "https://api.technologychecker.io/v1/segments"

payload = { "name": "US ecommerce, 51-200" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({name: 'US ecommerce, 51-200'})
};

fetch('https://api.technologychecker.io/v1/segments', 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://api.technologychecker.io/v1/segments",
  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([
    'name' => 'US ecommerce, 51-200'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://api.technologychecker.io/v1/segments"

	payload := strings.NewReader("{\n  \"name\": \"US ecommerce, 51-200\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.technologychecker.io/v1/segments")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"US ecommerce, 51-200\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.technologychecker.io/v1/segments")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"US ecommerce, 51-200\"\n}"

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

{
  "success": true,
  "data": {
    "segment": {
      "id": "seg_8f3a2c1b",
      "name": "YC W25 portfolio",
      "type": "list",
      "kind": "upload",
      "definition": {},
      "domain_count": 5914,
      "status": "ready",
      "membership_at": "2026-07-29T10:14:02.000Z",
      "matched_total": 123,
      "crawl_cadence": "none",
      "last_dispatched_at": "<string>",
      "created_at": "2026-07-29T10:12:00.000Z",
      "updated_at": "2026-07-29T10:14:02.000Z"
    },
    "coverage": {
      "in_corpus": 5114,
      "total": 5914
    },
    "rejected_domains": {
      "count": 2,
      "sample": [
        "<string>"
      ]
    }
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Provide exactly one scope: technology_id, technology or category_id."
  }
}

{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Missing or invalid API key"
  }
}

{
  "success": false,
  "error": {
    "code": "INSUFFICIENT_CREDITS",
    "message": "Insufficient credits for this request.",
    "details": {
      "required": 1,
      "available": 0
    }
  }
}

{
  "success": false,
  "error": {
    "code": "PLAN_LIMIT",
    "message": "Your plan allows up to 2 saved audiences. Delete one to create another."
  }
}

{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Missing or invalid API key"
  }
}

{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Missing or invalid API key"
  }
}

{
  "success": false,
  "error": {
    "code": "SEGMENT_QUERY_TIMEOUT",
    "message": "The segment query exceeded the 30s server-side limit.",
    "details": {
      "suggestion": "Narrow the segment — add an employees band, industry, or city — and try again."
    }
  }
}