Base64 Encoder/Decoder — Standard & URL-Safe

Base64 encoding/decoding API for AI agents. Encode text to base64 or decode base64 to text. Supports standard and URL-safe variants with metadata (input length, output length, encoding type). Tools: utility_encode_base64. Use this for encoding payloads, decoding tokens, or data transformation in pipelines. Basic utility for data processing. Returns: {output, encoding, inputLength, outputLength}. No API key required — x402 micropayment $0.001/call on Base L2.