Estimate password strength with Dropbox's zxcvbn
Estimate password strength with Dropbox's zxcvbn: score 0-4, estimated guesses and crack time for online and offline attacks, weak patterns found (dictionary, dates, sequences...) and tips. Evaluated in memory, never stored or logged.
Answeringour last check, 2026-10-03
1 of 1checks answered this week
327 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.vextorium.com/fuerza-contrasena-pago
| Category | Everything else |
|---|---|
| Provider host | api.vextorium.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-03 | valid payment request | 402 | $0.003 | 327 ms |
Example input (from the provider)
{
"body": {
"contrasena": "password123"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"contrasena": {
"type": "string"
}
},
"required": [
"contrasena"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"aviso": {
"type": [
"string",
"null"
]
},
"consejos": {
"items": {
"type": [
"null",
"string"
]
},
"type": [
"array",
"null"
]
},
"intentos_estimados": {
"type": [
"string",
"null"
]
},
"longitud": {
"type": [
"number",
"null"
]
},
"nivel": {
"type": [
"string",
"null"
]
},
"nota": {
"type": [
"string",
"null"
]
},
"patrones_debiles": {
"items": {
"type": [
"null",
"string"
]
},
"type": [
"array",
"null"
]
},
"puntuacion": {
"type": [
"number",
"null"
]
},
"tiempo_descifrado": {
"properties": {
"offline_hash_lento": {
"type": [
"string",
"null"
]
},
"offline_hash_rapido": {
"type": [
"string",
"null"
]
},
"online": {
"type": [
"string",
"null"
]
},
"online_limitado": {
"type": [
"string",
"null"
]
}
},
"type": [
"object",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}