Base64 encode / decode

Text Mode encode decode Card payment Pay $1 & run

Result

{}

Agent endpoint (x402)

POST returns HTTP 402 Payment Required until paid.

curl -s -X POST https://gate402.app/v1/base64 \
  -H 'content-type: application/json' \
  -d '{…}'
# → 402, then retry with PAYMENT-SIGNATURE / X-PAYMENT