AOP API/GST Verification

Verify GSTIN

POST/gst/verify

JWT bearer

Validate and decode a GSTIN (format + Luhn mod-36 checksum).

Endpoint

POSThttps://api.w3builders.com/v1/gst/verify

Request body

gstin (required, 15-char)

Response parameters

Field	Type
valid	value
gstin	value
details	object

Verify GSTIN

curl -X POST https://api.w3builders.com/v1/gst/verify \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "gstin": "27AAAPL1234C1ZV"
}'

{
  "valid": true,
  "gstin": "27AAAPL1234C1ZV",
  "details": {
    "state_code": "27",
    "state": "Maharashtra",
    "pan": "AAAPL1234C",
    "entity_type": "Company"
  }
}

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Verify GSTIN

curl -X POST https://api.w3builders.com/v1/gst/verify \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "gstin": "27AAAPL1234C1ZV"
}'

{
  "valid": true,
  "gstin": "27AAAPL1234C1ZV",
  "details": {
    "state_code": "27",
    "state": "Maharashtra",
    "pan": "AAAPL1234C",
    "entity_type": "Company"
  }
}