Identifiers and secrets from the Web Crypto random source
Identifiers and secrets from the Web Crypto random source: UUID v4 and v7, ULID, nanoid (size and alphabet), random passwords (length and character classes) and passphrases (words from the EFF large wordlist, CC BY 3.0 US), up to 100 per call. mode=parse validates a UUID or ULID and reports its version, variant and the time embedded in v1, v6, v7 and ULID. Nothing is stored.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
28 msmedian answer time
$0.001listed price per call
$0.001price 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
GET https://api.sitecheck-api.workers.dev/api/uuid
| Category | Market data |
|---|---|
| Provider host | api.sitecheck-api.workers.dev |
| Networks | eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.001 | 28 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"count": "2",
"kind": "uuid7"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"alphabet": {
"description": "nanoid alphabet, 2 to 64 distinct characters (optional)",
"type": "string"
},
"classes": {
"description": "password classes: lower, upper, digits, symbols (comma-separated, default all)",
"type": "string"
},
"count": {
"description": "How many, 1 to 100, default 1",
"type": "string"
},
"kind": {
"description": "uuid4 (default), uuid7, ulid, nanoid, password or passphrase",
"type": "string"
},
"length": {
"description": "password length, 8 to 128, default 20",
"type": "string"
},
"mode": {
"description": "generate (default) or parse",
"type": "string"
},
"separator": {
"description": "passphrase separator, up to 3 characters, default -",
"type": "string"
},
"size": {
"description": "nanoid length, 2 to 256, default 21",
"type": "string"
},
"value": {
"description": "mode parse: a UUID or ULID to check",
"type": "string"
},
"words": {
"description": "passphrase words, 3 to 10, default 6",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}