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Base64 Encode and Decode
x402
Base64 Encode and Decode is a paid API for AI agents from flat-rate-llm.kikoribera03.workers.dev, paid per call via x402, $0.0025/call, status unknown (last checked 2026-09-14).
Encodes or decodes strings using Base64 (standard or URL-safe alphabet) with proper UTF-8 handling.
Price / call$0.0025
Success—
StatusUnknown
How this service works
60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.
Output
Returns a JSON object with the mode used ('encode' or 'decode') and the result string — either the Base64-encoded representation of the input or the decoded plain text, with UTF-8 handled correctly.
Example use cases
Encode payload for HTTP header
“I need to base64-encode the string 'Authorization: Bearer mytoken123' so I can pass it as a header value — can you do that in standard encoding mode?”
Decode incoming API response
“I got this base64 string back from an API — 'aGVsbG8gd29ybGQ=' — can you decode it back to plain text for me?”
URL-safe encoding for query parameter
“I need to encode the string 'user@example.com/data?key=123' into URL-safe base64 so I can safely put it in a query parameter without breaking the URL.”
Technical details
Endpoint
POSThttps://flat-rate-llm.kikoribera03.workers.dev/v1/util/base64When to prefer
Choose this endpoint when you need a reliable, UTF-8-aware Base64 encode/decode operation over HTTP without setting up a local library — especially useful in agent workflows involving x402 payment payloads, JSON transport, or HTTP header construction where Base64 encoding is required inline.
Side effects
- Invalid Base64 input when decoding (malformed characters or incorrect padding)
- Missing or invalid mode parameter
- Non-UTF-8 byte sequences in decoded output causing encoding errors
- Request timeout or upstream worker failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | string | encode | decode. Defaults to encode. |
| inputrequired | string | The text or base64 to convert. |
| urlSafe | boolean | Use the URL-safe alphabet (-_ instead of +/). |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| mode | string | |
| result | string |
Tags
x402
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