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Hiero JSON-RPC Relay

Use ethers, viem, Hardhat or Foundry against Hedera.

Hiero JSON-RPC Relay

Hiero (LF Decentralized Trust)

Best for Use ethers, viem, Hardhat or Foundry against Hedera

Chains
Hedera
Price
Free (open source, self-host)
License
Apache-2.0

Open-source relay that translates Ethereum JSON-RPC calls into Hedera, so standard EVM tools can talk to Hedera. Config documents mainnet, testnet and previewnet. Self-host it for free; it is actively maintained under the Hiero project.

Visit Hiero JSON-RPC Relay Checked Oct 15, 2026 against this source

Chain support, with sources

We only add a chain when the maker's own docs name it. "EVM-compatible" alone counts for no specific chain. This is what the docs say, not a test or security review.

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