Kage 影
x402 v1 · zcash-testnet

Agents pay per call. Nobody learns who paid.

HTTP 402 settled in shielded Zcash: spendguard checks each payment, the merchant verifies with a viewing key alone.

Quickstart Try the live 402
  1. GET/api/quote
  2. 402Payment Requiredscheme zcash-shielded · 0.001 ZEC · one-time nonce
  3. payshielded transaction, nonce in the encrypted memo amount memo from to
  4. GET/api/quote + X-PAYMENT
  5. 200OK · "payer": ""
Recorded on Zcash testnet, 2026-10-21. Shaded fields are what the public chain hides.

Three steps. No account, no card.

  1. Ask

    The API answers 402 with a Zcash option in the standard x402 body.

  2. Pay

    spendguard checks the cap and host, then the agent pays shielded.

  3. Retry

    The facilitator finds the memo with its viewing key; the API answers 200.

Paid on testnet, not on slides.

10Payments
139Tests
0Spend keys
See the evidence

What's live today

Live

The paid API and its facilitator on Zcash testnet.

Setup required

Paying it needs your own funded testnet wallet. Mainnet is not supported.

Run the server tests in two minutes.

git clone https://github.com/nickthelegend/zec-shielded-x402 && cd zec-shielded-x402 && cargo test -p x402z-server
View on GitHub