Get Started

Network access

Public chain, public RPC, no key. Add it to a wallet with the parameters below.

Connection parameters

Network name

Autyon Testnet

Chain ID

77077

RPC URL

https://rpc.autyon.io

Currency symbol

AUT

Block explorer

https://autscan.io

Add the network programmatically

add-network.ts

await window.ethereum.request({
  method: 'wallet_addEthereumChain',
  params: [{
    chainId: '0x12D15',            // 77077
    chainName: 'Autyon Testnet',
    nativeCurrency: { name: 'Autyon', symbol: 'AUT', decimals: 18 },
    rpcUrls: ['https://rpc.autyon.io'],
    blockExplorerUrls: ['https://autscan.io'],
  }],
})

Tooling

Foundry, Hardhat, viem and wagmi all work. Point them at https://rpc.autyon.io, chain ID 77077.

foundry

forge create src/MyContract.sol:MyContract \
  --rpc-url https://rpc.autyon.io \
  --private-key $PRIVATE_KEY

Quirks you will hit

These are the things that actually cost us debugging time. Read them before you file a bug.

cast send fails with -32602 Invalid params

The node rejects some EIP-1559-shaped requests from newer foundry builds. Send legacy transactions: --legacy --gas-price 1000000000. Gas is a flat 1 gwei anyway, so you lose nothing.

eth_getLogs over a wide range fails with -32005

The public RPC caps the block range per query. A 0-to-latest scan worked when the chain was young and then broke as it grew (we found out when our own name index went blank). Either scan in chunks, or use the explorer's log API, which indexes full history: autscan.io/api?module=logs&action=getLogs&…

Blockscout pads topics with nulls

If you feed autscan log-API results into ethers' parseLog, filter the topics first: topics.filter(Boolean). Unused topic slots come back as null and ethers throws on them.

Gas estimation

Estimation can be refused for the same reason as the first quirk. For simple transfers a fixed gasLimit of 21000 works, but not for payments to contract wallets (an AgentWallet receive() costs more). When in doubt, set a generous limit; unused gas is refunded.

No base-fee auction means there is nothing to outbid. If your transaction is not mining, the problem is never the gas price.

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