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24K Labs Base Encoding/Decoding API
x402
24K Labs Base Encoding/Decoding API is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Encodes or decodes a string using base64, base64url, base32, hex, URL/percent-encoding, HTML entities, or data-URIs in a single API call.
Price / call$0.001
Success—
StatusUnknown
How this service works
Encode or decode a string across base64, base64url, base32, hex, URL/percent, HTML entities, and data-URIs in one call.
Output
Returns the transformed string in the requested encoding or decoding format, along with the encoding scheme used and the direction of the operation performed.
Example use cases
Safe URL parameter encoding
“URL-encode this string so I can safely put it in a query parameter: 'user name=John Doe&role=admin&token=abc 123'”
Decoding an opaque API token
“I got this base64 string back from an API response — can you decode it to see what it actually says? The string is 'SGVsbG8gV29ybGQh'”
Embedding image as data-URI
“Encode this raw image data as a data-URI so I can embed it directly in an HTML src attribute without hosting it as a separate file.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/base-encodeWhen to prefer
Choose this endpoint when you need quick, reliable string encoding or decoding across multiple standard schemes without setting up a local library. Especially useful for agents that need to handle base64, URL-encoding, or HTML entity transformations on the fly without executing code locally. Supports a broader range of schemes (base32, base64url, hex, data-URI) in a single unified call compared to purpose-built single-format tools.
Side effects
- Invalid encoding scheme specified — API returns an error if the scheme is not one of the supported types
- Malformed input for decoding — if the input string is not valid for the specified encoding (e.g. invalid base64 characters), an error is returned
- Empty input string — may return an error or empty result
- Unsupported combination of encoding and direction — some schemes may only support encode or decode
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| op | string | |
| codec | string | |
| input | string |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "NBSWY3DPEB3W64TMMQ======"
}
}Tags
x402
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