Estimate tokens and cost for a piece of text

curl -X POST "https://www.twotic.dev/v1/token-counter/count" \
  -H "Authorization: Bearer $TWOTIC_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "text": "Summarise the following support transcript…", "model": "claude-sonnet-4", "outputTokens": 500 }'

const res = await fetch("https://www.twotic.dev/v1/token-counter/count", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.TWOTIC_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "text": "Summarise the following support transcript…",
    "model": "claude-sonnet-4",
    "outputTokens": 500
  }),
})

if (!res.ok) throw new Error(await res.text())

const data = await res.json()
console.log(res.headers.get("X-Twotic-Cost"))

import os, requests

res = requests.post(
    "https://www.twotic.dev/v1/token-counter/count",
    headers={"Authorization": f"Bearer {os.environ['TWOTIC_KEY']}"},
    json={
      "text": "Summarise the following support transcript…",
      "model": "claude-sonnet-4",
      "outputTokens": 500
    },
)
res.raise_for_status()

data = res.json()
print(res.headers["X-Twotic-Cost"])

package main

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

func main() {
	body := strings.NewReader(`{ "text": "Summarise the following support transcript…", "model": "claude-sonnet-4", "outputTokens": 500 }`)
	req, _ := http.NewRequest("POST", "https://www.twotic.dev/v1/token-counter/count", body)
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Authorization", "Bearer "+os.Getenv("TWOTIC_KEY"))

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	out, _ := io.ReadAll(res.Body)
	fmt.Println(string(out))
	fmt.Println(res.Header.Get("X-Twotic-Cost"))
}

<?php
$ch = curl_init("https://www.twotic.dev/v1/token-counter/count");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST  => "POST",
    CURLOPT_HTTPHEADER     => [
        "Authorization: Bearer " . getenv("TWOTIC_KEY"),
        "Content-Type: application/json",
    ],
    CURLOPT_POSTFIELDS     => '{ "text": "Summarise the following support transcript…", "model": "claude-sonnet-4", "outputTokens": 500 }',
]);

$data = json_decode(curl_exec($ch), true);
curl_close($ch);
print_r($data);

require "net/http"
require "json"

uri = URI("https://www.twotic.dev/v1/token-counter/count")
req = Net::HTTP::Post.new(uri)
req["Authorization"] = "Bearer #{ENV.fetch('TWOTIC_KEY')}"
req["Content-Type"] = "application/json"
req.body = {
  "text": "Summarise the following support transcript…",
  "model": "claude-sonnet-4",
  "outputTokens": 500
}.to_json

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == "https") do |http|
  http.request(req)
end

puts JSON.parse(res.body)
puts res["X-Twotic-Cost"]

{
  "mcpServers": {
    "token-counter": {
      "type": "http",
      "url": "https://www.twotic.dev/api/mcp/token-counter",
      "headers": { "Authorization": "Bearer tk_live_your_key" }
    }
  }
}