Checkfast.pro · Reseller API

API Checkfast.pro

Checkfast.pro API for your integrations and reselling.

How billing works

  • price_usd_per_10k is the Checkfast.pro price per 10,000 lines.
  • Charged from USDT balance: (lines / 10,000) × price.

Autorización

Authorization: Bearer ck_your_api_key
Base URL: https://checkfast.pro

Endpoints

GET  https://checkfast.pro/api/v1/balance
GET  https://checkfast.pro/api/v1/checkers
GET  https://checkfast.pro/api/v1/tasks?limit=50
POST https://checkfast.pro/api/v1/check
GET  https://checkfast.pro/api/v1/check?task_id=...
GET  https://checkfast.pro/api/v1/download?task_id=...

Crear verificación

# Batch (multipart)
POST https://checkfast.pro/api/v1/check
Authorization: Bearer ck_xxx
Content-Type: multipart/form-data
[email protected]
task_type=ws

# JSON
POST https://checkfast.pro/api/v1/check
{ "query": "+79001234567", "task_type": "tg" }
{ "numbers": ["+79001","+79002"], "task_type": "ws" }

# Status → download when status=exported
GET https://checkfast.pro/api/v1/check?task_id=TASK_ID
GET https://checkfast.pro/api/v1/download?task_id=TASK_ID

Ejemplos (curl)

curl https://checkfast.pro/api/v1/balance \
  -H "Authorization: Bearer ck_xxx"

curl https://checkfast.pro/api/v1/checkers \
  -H "Authorization: Bearer ck_xxx"

curl -X POST https://checkfast.pro/api/v1/check \
  -H "Authorization: Bearer ck_xxx" \
  -F "file=@./numbers.txt" \
  -F "task_type=ws"

curl "https://checkfast.pro/api/v1/check?task_id=TASK_ID" \
  -H "Authorization: Bearer ck_xxx"

curl -L "https://checkfast.pro/api/v1/download?task_id=TASK_ID" \
  -H "Authorization: Bearer ck_xxx" -o result.csv

task_type catalog

Current prices are in the price_usd_per_10k field.

task_typeName$/10k
tgChecker Telegram5
tg_activeTelegram: días de actividad7
tg_avatarTelegram: edad y género9
wsChecker WhatsApp2
ws_activeWhatsApp: días de actividad3.6
ws_avatarWhatsApp: edad y género7.6
phonecheckValidación de teléfono8
active_checkChecker de actividad del número13
high_value_usersChecker de usuarios high-value14
viberChecker Viber1
viber_activeViber: días de actividad10
viber_seniorViber: edad y género30
imessageChecker iMessage4
rcsChecker RCS3
signalChecker Signal8
vkChecker VK16
appleChecker Apple ID3
apple_emailChecker Apple ID por email4
facebookChecker Facebook0.6
facebook_emailChecker Facebook por email0.6
amazonChecker Amazon4
amazon_emailChecker Amazon por email4
instagramChecker Instagram0.6
instagram_emailChecker Instagram por email0.6
maxChecker MAX24
max_fullMAX: edad y género40
netflixChecker Netflix14
netflix_emailChecker Netflix por email14
lineChecker Line10
line_seniorLine: edad y género30
twitterChecker X (Twitter)2
twitter_emailChecker X (Twitter) por email2
tg_usernameChecker Telegram Telegram por usuario3
tg_username_avatarAvatar Telegram Telegram por usuario5
tg_username_profileChecker Telegram Telegram por usuario7
linkedin_phoneChecker LinkedIn10
linkedinChecker LinkedIn1
linkedin_profileChecker LinkedIn20
zaloChecker Zalo4
tiktokChecker TikTok18
microsoftChecker Microsoft4
snapchatChecker Snapchat30
messengerChecker Messenger5.6
gotoChecker GoTo14
threadsChecker Threads1.6
spotify_emailChecker Spotify por email2
bandChecker Band2
dhlChecker DHL3
sidelineChecker Sideline3
airbnbChecker Airbnb4
pornhubChecker Pornhub20
temuChecker Temu4
binanceChecker Binance13
binance_emailChecker Binance por email30
kucoinChecker KuCoin14
kucoin_emailChecker KuCoin por email14
htxChecker HTX7
htx_emailChecker HTX por email14
coinwChecker CoinW4
coinw_emailChecker CoinW por email14
crypto_emailChecker Crypto.com por email30
email_checkValidación de email14
carrierDetección de operador4
us_carrier_premiumOperador EE.UU. avanzado30

Códigos de error

HTTPCodeMeaning
401UNAUTHORIZEDMissing/invalid API key
402PAYMENT_REQUIREDNot enough USDT balance
409NOT_READYResult not ready yet
429RATE_LIMITToo many requests
502PROVIDER_ERRORTemporary processing failure (balance refunded on create failure)