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SiteCheck Hash Generator
x402
SiteCheck Hash Generator is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-11-05).
Computes multiple cryptographic hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512, CRC-32, HMAC-SHA256, HMAC-SHA512) for a given text or base64-encoded input in a single call
Price / call$0.002
Success—
StatusUnknown
How this service works
Hashes of a text or base64 input (up to 1 MB): MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC-32, and HMAC-SHA-256 or HMAC-SHA-512 when a key is given. Hex and base64 output. MD5 and CRC-32 are implemented here and checked against RFC 1321 and the standard CRC test vector. Body { input, encoding, algorithms, key }. Pure code and WebCrypto, no outside request.
Output
Returns a JSON object containing the byte length of the input, the hash results for each requested algorithm (each with both hex and base64 representations), a source note describing the computation backend (WebCrypto, MD5, CRC-32), and a checkedAt ISO timestamp.
Example use cases
File integrity checksum verification
“Compute the SHA-256 and CRC-32 checksums of this base64-encoded file chunk so I can verify it hasn't been tampered with — the content is 'SGVsbG8gV29ybGQ=' and the encoding is base64.”
HMAC signature for API request
“Generate an HMAC-SHA256 signature for the message 'user_id=42&action=purchase' using the key 'mysecretkey123' — I need the hex digest to validate the webhook.”
Multi-algorithm hash for deduplication
“Hash the string 'product-sku-98765' using MD5, SHA-1, and SHA-256 all at once so I can use these as deduplication keys across different systems.”
Technical details
Endpoint
POSThttps://api.sitecheck-api.workers.dev/api/hash?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need multiple hash algorithms computed in a single API call without running local crypto libraries, when you need HMAC signatures without managing crypto dependencies, when working in environments where WebCrypto is unavailable, or when you want MD5/CRC-32 alongside SHA-family hashes in one unified response. Prefer alternatives if you only need a single standard hash and have access to native crypto libraries.
Side effects
- Missing or empty 'input' field returns an error
- HMAC algorithms requested without providing a 'key' field fail
- Invalid algorithm name in 'algorithms' list causes rejection
- Input exceeding expected size limits may be rejected
- Base64 encoding specified but input is not valid base64
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | Key for the HMAC algorithms, up to 1024 characters (JSON body field) |
| input | string | The text, or base64 when encoding is base64 (JSON body field) |
| encoding | string | text (default) or base64 |
| algorithms | string | Comma-separated: md5, sha1, sha256, sha384, sha512, crc32, hmac-sha256, hmac-sha512 (default: all but the HMACs) |
Output
Schema · Response
{
"type": "json",
"example": {
"bytes": 3,
"source": "Computed here: WebCrypto (SHA-1/2, HMAC), MD5 (RFC 1321) and CRC-32 (ISO 3309) in code",
"results": {
"md5": {
"hex": "900150983cd24fb0d6963f7d28e17f72",
"base64": "kAFQmDzST7DWlj99KOF/cg=="
},
"crc32": {
"hex": "352441c2",
"base64": "NSRBwg=="
},
"sha256": {
"hex": "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
"base64": "ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0="
}
},
"checkedAt": "2026-10-15T14:07:52.198Z"
}
}Tags
x402
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