Fees
Fixed gas pricing, transaction costs, and Turnstile conversion behavior
Overview
Radius uses fixed gas pricing with low, predictable fees. A standard ERC-20 stablecoin transfer costs about 0.00010 USD on average.
Fees are paid in RUSD. If an account holds a convertible stablecoin such as SBC, Radius can automatically convert it inline through the Turnstile at a 1:1 value 1.
| Parameter | Value |
|---|---|
| Avg. stablecoin transfer cost | 0.00010 USD |
| Target SBC transfers per 1 USD | 10,000 |
| Gas price | 9.85998816e-10 RUSD |
| Gas used (avg. transfer) | 101444 |
Query gas price
Use the standard eth_gasPrice RPC method to fetch the current fixed gas price:
curl -X POST https://rpc.testnet.radiustech.xyz \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}'Example response:
{
"jsonrpc": "2.0",
"id": 1,
"result": "0x3b9aca00"
}The result is the gas price in wei (hex-encoded). 0x3b9aca00 = 1,000,000,000 wei = 1 gwei.
Use with development tools
Radius accepts both legacy and EIP-1559 fee fields, and standard fee estimation works out of the box — viem, ethers.js, and wagmi land transactions with no gas overrides. The main exception is Hardhat v2, which benefits from a gasPrice line in its network config. See Tooling configuration for setup instructions covering Foundry, viem, wagmi, Hardhat, and ethers.js.
Turnstile
If a sender has SBC but not enough RUSD for gas, Radius runs an automatic, zero-fee inline conversion before executing the transaction 2.
One minimum conversion (0.01 SBC → 0.01 RUSD) covers roughly 1,000 standard transfers.
For the Turnstile mechanics (conversion limits, one-way behavior, balance methods, and RPC interactions), see The Turnstile and balances.