Onyx Slingshot is the DeFi app for Onyx Testnet, Chain ID 8901 (0x22c5). It is a separate network from Onyx Mainnet. Test XCN and every test token have no Mainnet value. Use a wallet you reserve for testing, and confirm the wallet shows Chain ID 8901 before you sign.
Open https://app.testnet.onyx.org. Each section lives in the address hash, so a refresh stays on that section:
| Section | Address |
|---|---|
| Swap | https://app.testnet.onyx.org/#/swap |
| Bridge | https://app.testnet.onyx.org/#/bridge |
| Migrate | https://app.testnet.onyx.org/#/migrate |
| Yield | https://app.testnet.onyx.org/#/yield |
A path without the hash, such as https://app.testnet.onyx.org/bridge, is not a page on the host and returns 404. Use the home address or one of the hash addresses above. Test XCN comes from the Telegram bot on the Faucet page, which is separate from the app. Robinhood test ETH and TSLA come from the Robinhood Chain Testnet Faucet, as described on Bridge.
Add Onyx Testnet
| Setting | Value |
|---|---|
| Network name | Onyx Testnet |
| RPC URL | https://rpc.testnet.onyx.org |
| Chain ID | 8901 |
| Currency symbol | XCN |
| WebSocket | wss://rpc.testnet.onyx.org/ws |
Slingshot can prompt the wallet to add this network. You can also add it by hand with the table above.
Check the chain before you sign:
bash
curl -sS https://rpc.testnet.onyx.org \
-H 'content-type: application/json' \
--data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'The result must be 0x22c5 (decimal 8901).
Get test XCN
Gas on Onyx Testnet is test XCN. Request it from the Onyx Testnet Faucet Bot, Telegram @GoliathFaucetBot. The steps, the 10,000 XCN amount, and the cooldown are on the Faucet page.
What each section does
| Section | What you rehearse |
|---|---|
| Faucet | Receive test XCN in the wallet you will connect |
| Swap | Trade the test pool tokens and, if you choose, add liquidity |
| Bridge | Move test ETH and XCN with Ethereum Sepolia, or test ETH and TSLA with Robinhood Chain Testnet |
| Migrate | Move staked test XCN from Ethereum Sepolia onto Onyx Testnet |
| Yield | Stake test XCN for stXCN and unstake it again |
Other public Testnet services
| Service | URL |
|---|---|
| Mirror REST | https://api.testnet.onyx.org |
| Validator dashboard | https://validators.testnet.onyx.org |
| Bridge status used by the app | https://bridgeapi.testnet.onyx.org/api/v1 |
Connection details for both networks are also on Chain Info. Mainnet app behavior stays on Onyx App.