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Delx Base64url Decode
x402
Delx Base64url Decode is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Decodes a Base64url-encoded string (with optional padding) into its original text, returning the decoded result and an ok status flag.
Price / call$0.001
Success—
StatusUnknown
How this service works
Base64url-decode text (padding optional). Call when you reverse URL-safe tokens held by agents. Returns decoded text and ok for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Output
Returns a JSON object with a 'decoded' field containing the original plain-text string, and an 'ok' boolean indicating whether decoding succeeded. No data is retained server-side.
Example use cases
Decode JWT header segment
“I have a JWT and I want to read the header — can you base64url-decode this first segment for me: 'eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9'?”
Unwrap OAuth state parameter
“I got a base64url-encoded state parameter back from an OAuth redirect — it's 'c3RhdGUtdmFsdWUtaGVyZQ' — can you decode it so I can see what's inside?”
Read encoded webhook payload
“This incoming webhook has a base64url-encoded data field: 'dXNlcjoxMjM0NQ' — please decode it so I can extract the user ID from it.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/base64url-decodeWhen to prefer
Choose this endpoint when you need a simple, stateless, no-auth, local-only Base64url decode operation — especially in agentic pipelines where you want to avoid sending tokens to a general-purpose LLM, need deterministic output, and are already using x402 micropayment infrastructure. Prefer it over rolling your own decode logic when operating in an agent that lacks a native runtime decode function.
Side effects
- Invalid Base64url characters in input — returns error or ok:false
- Empty input string — may return empty string or error
- Input is standard Base64 (with + and / characters) rather than URL-safe Base64url — may fail or produce incorrect output
- Malformed padding causing decode failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input field: text. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"text": "hello-delx",
"schema": "delx/util-base64url-decode/v1"
}
}Tags
x402
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