SiteCheck Encode/Decode

x402

SiteCheck Encode/Decode 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 2026-11-04).

Encodes or decodes a string using a specified scheme such as base64, hex, URL, HTML, punycode, or quoted-printable

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Encode or decode text as base64, base64url, hex, URL (percent) encoding, HTML entities, punycode (domain names) or quoted-printable. Body { input, scheme, direction }, up to 1 MB. Invalid input to decode is a 400 that names the position of the first bad character. Unknown HTML entities are reported, not guessed. Pure code, no outside request.

Output

Returns a JSON object containing the transformed output string, the scheme used, the direction (encode or decode), a source note indicating the computation method, and a checkedAt timestamp.

Example use cases

Punycode domain name conversion

“Convert the domain name 'bücher.de' to its punycode representation so I can use it in a DNS lookup.”

Base64 encode a payload

“Encode the text 'user:password123' to base64 so I can use it in an Authorization header.”

Decode a URL-encoded query string

“Decode this URL-encoded string '%48%65%6C%6C%6F%20%57%6F%72%6C%64' back to plain text.”

Technical details

Endpoint

POSThttps://api.sitecheck-api.workers.dev/api/encode?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a lightweight, pay-per-call encoding or decoding operation without setting up a local library, especially for schemes like punycode (internationalized domain names), quoted-printable (email), or any of the supported formats in a serverless agent workflow.

Side effects

Unsupported scheme value returns an error
Missing 'input' field results in a validation error
Invalid direction value (not 'encode' or 'decode') may return an error
Malformed input for a given scheme (e.g. invalid base64 when decoding) may return an error or garbled output

Input

Schema · Request body

Field	Type	Description
input	string	The text to encode or decode (JSON body field)
scheme	string	base64, base64url, hex, url, html, punycode or quoted-printable
direction	string	encode (default) or decode

Output

Schema · Response

{
  "type": "json",
  "example": {
    "output": "xn--bcher-kva.de",
    "scheme": "punycode",
    "source": "Computed here (pure code)",
    "checkedAt": "2026-10-15T14:07:52.199Z",
    "direction": "encode"
  }
}

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