RPC endpoints

Each blockchain plugin connects to its network through an RPC endpoint. Use public endpoints for testing and dedicated paid providers for production.

Celo and Tron are used here as an example. Atum supports many additional EVM networks, plus Solana, with more chains on the way — see Supported mainnets.

Testnet (public RPCs)

For testing, public RPC endpoints are configured in the plugin files:

# evm/config.yaml (Celo Sepolia)
rpcUrl: https://forno.celo-sepolia.celo-testnet.org

# tron/config.yaml (Tron Shasta)
rpcUrl: https://api.shasta.trongrid.io

Production (paid RPCs)

Always use paid RPC providers for production. Public RPCs have rate limits and can cause transaction failures.

Celo
Tron

Provider	Pricing	Reliability
Alchemy	Pay-as-you-go	High
Infura	Tiered plans	High
QuickNode	Dedicated nodes	Very high

# evm/config.yaml
rpcUrl: https://celo-mainnet.infura.io/v3/YOUR_API_KEY

Or via environment variable:

CELO_RPC_URL=https://celo-mainnet.infura.io/v3/YOUR_API_KEY

Provider	Pricing	Reliability
TronGrid	Free tier + paid	High

# tron/config.yaml
rpcUrl: https://api.trongrid.io

And set the API key:

TRON_API_KEY=your-trongrid-api-key

Overview

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Settlement Reference

Testnet (public RPCs)

Production (paid RPCs)

​Testnet (public RPCs)

​Production (paid RPCs)

Testnet (public RPCs)

Production (paid RPCs)