curl --request POST \
  --url https://api.zespan.com/v1/ingest \
  --header 'Content-Type: application/x-ndjson' \
  --header 'x-api-key: <api-key>' \
  --data '
"{\"trace_id\":\"3b1c...\",\"span_id\":\"a91f...\",\"name\":\"chat.completions\",\"provider\":\"openai\",\"model\":\"gpt-4o\",\"operation\":\"chat.completions\",\"input_tokens\":812,\"output_tokens\":146,\"latency_ms\":1240,\"status\":\"success\",\"timestamp\":\"2026-07-05T12:00:00.000Z\"}\n{\"trace_id\":\"3b1c...\",\"span_id\":\"c72d...\",\"parent_span_id\":\"a91f...\",\"name\":\"vector.search\",\"operation\":\"retrieval.query\",\"latency_ms\":54,\"status\":\"success\",\"timestamp\":\"2026-07-05T12:00:00.050Z\"}\n"
'

import requests

url = "https://api.zespan.com/v1/ingest"

payload = "{\"trace_id\":\"3b1c...\",\"span_id\":\"a91f...\",\"name\":\"chat.completions\",\"provider\":\"openai\",\"model\":\"gpt-4o\",\"operation\":\"chat.completions\",\"input_tokens\":812,\"output_tokens\":146,\"latency_ms\":1240,\"status\":\"success\",\"timestamp\":\"2026-07-05T12:00:00.000Z\"}
{\"trace_id\":\"3b1c...\",\"span_id\":\"c72d...\",\"parent_span_id\":\"a91f...\",\"name\":\"vector.search\",\"operation\":\"retrieval.query\",\"latency_ms\":54,\"status\":\"success\",\"timestamp\":\"2026-07-05T12:00:00.050Z\"}
"
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/x-ndjson"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/x-ndjson'},
  body: JSON.stringify('{"trace_id":"3b1c...","span_id":"a91f...","name":"chat.completions","provider":"openai","model":"gpt-4o","operation":"chat.completions","input_tokens":812,"output_tokens":146,"latency_ms":1240,"status":"success","timestamp":"2026-07-05T12:00:00.000Z"}\n{"trace_id":"3b1c...","span_id":"c72d...","parent_span_id":"a91f...","name":"vector.search","operation":"retrieval.query","latency_ms":54,"status":"success","timestamp":"2026-07-05T12:00:00.050Z"}\n')
};

fetch('https://api.zespan.com/v1/ingest', 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.zespan.com/v1/ingest",
  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('{"trace_id":"3b1c...","span_id":"a91f...","name":"chat.completions","provider":"openai","model":"gpt-4o","operation":"chat.completions","input_tokens":812,"output_tokens":146,"latency_ms":1240,"status":"success","timestamp":"2026-07-05T12:00:00.000Z"}
{"trace_id":"3b1c...","span_id":"c72d...","parent_span_id":"a91f...","name":"vector.search","operation":"retrieval.query","latency_ms":54,"status":"success","timestamp":"2026-07-05T12:00:00.050Z"}
'),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/x-ndjson",
    "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://api.zespan.com/v1/ingest"

	payload := strings.NewReader("\"{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"chat.completions\\\",\\\"provider\\\":\\\"openai\\\",\\\"model\\\":\\\"gpt-4o\\\",\\\"operation\\\":\\\"chat.completions\\\",\\\"input_tokens\\\":812,\\\"output_tokens\\\":146,\\\"latency_ms\\\":1240,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.000Z\\\"}\\n{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"c72d...\\\",\\\"parent_span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"vector.search\\\",\\\"operation\\\":\\\"retrieval.query\\\",\\\"latency_ms\\\":54,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.050Z\\\"}\\n\"")

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

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

	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.zespan.com/v1/ingest")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/x-ndjson")
  .body("\"{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"chat.completions\\\",\\\"provider\\\":\\\"openai\\\",\\\"model\\\":\\\"gpt-4o\\\",\\\"operation\\\":\\\"chat.completions\\\",\\\"input_tokens\\\":812,\\\"output_tokens\\\":146,\\\"latency_ms\\\":1240,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.000Z\\\"}\\n{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"c72d...\\\",\\\"parent_span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"vector.search\\\",\\\"operation\\\":\\\"retrieval.query\\\",\\\"latency_ms\\\":54,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.050Z\\\"}\\n\"")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.zespan.com/v1/ingest")

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/x-ndjson'
request.body = "\"{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"chat.completions\\\",\\\"provider\\\":\\\"openai\\\",\\\"model\\\":\\\"gpt-4o\\\",\\\"operation\\\":\\\"chat.completions\\\",\\\"input_tokens\\\":812,\\\"output_tokens\\\":146,\\\"latency_ms\\\":1240,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.000Z\\\"}\\n{\\\"trace_id\\\":\\\"3b1c...\\\",\\\"span_id\\\":\\\"c72d...\\\",\\\"parent_span_id\\\":\\\"a91f...\\\",\\\"name\\\":\\\"vector.search\\\",\\\"operation\\\":\\\"retrieval.query\\\",\\\"latency_ms\\\":54,\\\"status\\\":\\\"success\\\",\\\"timestamp\\\":\\\"2026-07-05T12:00:00.050Z\\\"}\\n\""

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

{
  "accepted": 2,
  "cv": 7
}

{
  "error": "Unauthorized",
  "code": "rate_limit_exceeded"
}

{
  "error": "Unauthorized",
  "code": "rate_limit_exceeded"
}

{
  "error": "Unauthorized",
  "code": "rate_limit_exceeded"
}

{
  "error": "Unauthorized",
  "code": "rate_limit_exceeded"
}