Validators
Deterministic checks by fourzerotwo. Each response states what it does and does not prove.
- endpoints
- 6
- from
- $0.0005 / call
- free tier
- yes
IMEI check digit
Validate an IMEI (length + Luhn) and split TAC, serial and check digit.
- price
- $0.0005 / call
- free tier
- free allowance
- MCP tool
- validators__imei
- method
- GET
GET https://fourzerotwo.si/v1/validators/imei
| Param | Type | Description |
|---|---|---|
| imei | string | IMEI |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/imei?imei=490154203237518" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/imei?imei=490154203237518"
VIN check
VIN format, check digit, WMI and model-year candidates.
- price
- $0.0005 / call
- free tier
- free allowance
- MCP tool
- validators__vin
- method
- GET
GET https://fourzerotwo.si/v1/validators/vin
| Param | Type | Description |
|---|---|---|
| vin | string | VIN |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/vin?vin=1HGCM82633A004352" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/vin?vin=1HGCM82633A004352"
IBAN check
IBAN mod-97 checksum and country length; UK sort code extracted.
- price
- $0.0005 / call
- free tier
- free allowance
- MCP tool
- validators__iban
- method
- GET
GET https://fourzerotwo.si/v1/validators/iban
| Param | Type | Description |
|---|---|---|
| iban | string | IBAN |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/iban?iban=GB82%20WEST%201234%205698%207654%2032" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/iban?iban=GB82%20WEST%201234%205698%207654%2032"
UK phone number
Classify a UK number (mobile, landline, freephone, premium…) and format as E.164.
- price
- $0.0005 / call
- free tier
- free allowance
- MCP tool
- validators__uk-phone
- method
- GET
GET https://fourzerotwo.si/v1/validators/uk-phone
| Param | Type | Description |
|---|---|---|
| number | string | Phone number |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/uk-phone?number=07700%20900123" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/uk-phone?number=07700%20900123"
UK postcode format
Validate and normalise UK postcode format; split outward/inward codes.
- price
- $0.0005 / call
- free tier
- free allowance
- MCP tool
- validators__uk-postcode
- method
- GET
GET https://fourzerotwo.si/v1/validators/uk-postcode
| Param | Type | Description |
|---|---|---|
| postcode | string | Postcode |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/uk-postcode?postcode=sw1a1aa" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/uk-postcode?postcode=sw1a1aa"
Email check
Email syntax, whether the domain accepts mail, disposable and role-account flags.
- price
- $0.001 / call
- free tier
- free allowance
- MCP tool
- validators__email
- method
- GET
GET https://fourzerotwo.si/v1/validators/email
| Param | Type | Description |
|---|---|---|
| string |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/validators/email?email=hello%40fourzerotwo.si" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/validators/email?email=hello%40fourzerotwo.si"
Validation by fourzerotwo.