Network & contracts
All Confidential x402 infrastructure is currently deployed on Base Sepolia (chain ID 84532). This is a testnet environment intended for development and integration testing.
The current deployment uses test tokens with no real-world value. Do not use mainnet private keys or real funds.
Deployed contracts
| Contract | Address |
|---|---|
| Merces Contract | 0x7F73402cB6AF7Ffa446e2D463701e3eA89C95f8f |
| Confidential USDC token | 0x6AA4dd47444154A1E4424D08622EF6e96bf66de6 |
Contract source code is available in the merces1-x402 GitHub repository.
TACEO-hosted endpoints
| Service | URL |
|---|---|
| Faucet | https://faucet.merces1.taceo.io |
| Facilitator | https://x402-facilitator.merces1.taceo.io |
| Resource server (test) | https://x402-server.merces1.taceo.io |
| MPC node 0 | https://node0.merces1.taceo.io |
| MPC node 1 | https://node1.merces1.taceo.io |
| MPC node 2 | https://node2.merces1.taceo.io |
Chain details
| Parameter | Value |
|---|---|
| Network name | Base Sepolia |
| Chain ID | 84532 |
| CAIP-2 identifier | eip155:84532 |
| Block explorer | https://sepolia.basescan.org |
| Public RPC | https://sepolia.base.org |
Faucet API
The faucet funds a new Merces wallet with 1,000 test tokens. Each address is limited to one claim per 24 hours.
Endpoint: POST /claim/{address}
curl -X POST https://faucet.merces1.taceo.io/claim/0xYourWalletAddress
Responses:
| Status | Meaning |
|---|---|
200 OK | Tokens deposited successfully |
429 Too Many Requests | Address already claimed within the last 24 hours |
500 Internal Server Error | Faucet encountered an error, try again shortly |
MPC public keys
The BabyJubJub public keys of the three MPC operators are published by the facilitator's
/supported endpoint and injected into every PaymentRequired response automatically. You do
not need to configure them manually.
To fetch them directly:
curl https://x402-facilitator.merces1.taceo.io/supported
The response includes the current MPC public keys alongside the supported scheme, network, and contract address.
Support
For questions, issues, or integration help:
- Discord: taceo.io/discord
- GitHub: github.com/TaceoLabs/merces1-x402
- Email: hello@taceo.io