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Network and RPC

Endpoints, limits, and integration guidance
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Use this page to configure wallets and apps for Radius. It includes network values, RPC behavior, rate limits, and fee configuration patterns.

Network configuration

Radius Network

SettingValue
Network nameRadius Network
RPC endpointhttps://rpc.radiustech.xyz
Chain ID723487
Currency symbolRUSD
Explorerhttps://network.radiustech.xyz
FaucetNot available on mainnet (Dashboard or API)

Radius Testnet

SettingValue
Network nameRadius Testnet
RPC endpointhttps://rpc.testnet.radiustech.xyz
Chain ID72344
Currency symbolRUSD
Explorerhttps://testnet.radiustech.xyz
Faucet (Dashboard)https://testnet.radiustech.xyz/wallet
Faucet (API)https://testnet.radiustech.xyz/api/v1/faucet

Add Radius to a wallet

MetaMask

  1. Open MetaMask and select Add network.
  2. Enter the values from the table above.
  3. Save and switch to the Radius network you configured.

Programmatic setup (viem)

Use the Radius chain definition from Tooling configuration — chain definition. No fee overrides are needed — viem's built-in estimation works with Radius.

RPC endpoints and transport

  • HTTP RPC: Use the endpoint values in the network tables.
  • WebSocket RPC: Requires an RPC key with elevated privileges.

For WebSocket access requests, contact support@radiustech.xyz.

API keys and rate limiting

Radius tracks request volume per API key.

  • Requests without an API key have lower limits.
  • Default API key limit is 10 MGas/s.
  • For higher limits, contact support@radiustech.xyz.

In this context, “MGas” includes both RPC calls and gas consumed by submitted transactions.

Avoid throttling

  1. Reuse API keys consistently per environment.
  2. Add client-side retry with exponential backoff for 429-style responses.
  3. Cache frequent read requests where possible.
  4. Batch reads with Multicall3 when practical.
  5. Queue and smooth bursty traffic instead of sending spikes.

RPC key URL format

Append your API key to the RPC URL path:

https://rpc.radiustech.xyz/YOUR_API_KEY

JSON-RPC behavior to account for

Radius is EVM compatible, but some methods differ from Ethereum behavior:

  • eth_blockNumber returns the current timestamp in milliseconds
  • eth_getBalance returns native balance plus convertible USD balance
  • eth_gasPrice returns the fixed network gas price
  • eth_feeHistory returns a pseudo-supported response

See JSON-RPC API for method details and Ethereum compatibility for rationale.

Get testnet funds

Use the Radius testnet faucet (Dashboard) to claim SBC tokens with a point-and-click interface.

For programmatic and agent access, use the Faucet API. The API is available on testnet only — there is no faucet API on mainnet.

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