mechanisms/evm/v1 - x402 SDK Integration

import "github.com/x402-foundation/x402/go/v2/mechanisms/evm/v1"

Variables

NetworkChainIDs maps v1 legacy network names to their chain IDs.

var NetworkChainIDs = map[string]*big.Int{
	"ethereum":           big.NewInt(1),
	"sepolia":            big.NewInt(11155111),
	"abstract":           big.NewInt(2741),
	"abstract-testnet":   big.NewInt(11124),
	"base-sepolia":       big.NewInt(84532),
	"base":               big.NewInt(8453),
	"avalanche-fuji":     big.NewInt(43113),
	"avalanche":          big.NewInt(43114),
	"iotex":              big.NewInt(4689),
	"sei":                big.NewInt(1329),
	"sei-testnet":        big.NewInt(1328),
	"polygon":            big.NewInt(137),
	"polygon-amoy":       big.NewInt(80002),
	"peaq":               big.NewInt(3338),
	"story":              big.NewInt(1514),
	"educhain":           big.NewInt(41923),
	"skale-base-sepolia": big.NewInt(324705682),
	"megaeth":            big.NewInt(4326),
	"monad":              big.NewInt(143),
	"stable":             big.NewInt(988),
	"stable-testnet":     big.NewInt(2201),
	"celo":               big.NewInt(42220),
	"flare":              big.NewInt(14),
}

NetworkConfigs maps v1 legacy network names to their full configuration. Only networks that have a known default asset are included here.

Source: mechanisms/evm/v1/network.go:38

var NetworkConfigs = map[string]evm.NetworkConfig{
	"base": {
		ChainID: big.NewInt(8453),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
			Name:     "USD Coin",
			Version:  "2",
			Decimals: evm.DefaultDecimals,
		},
	},
	"base-sepolia": {
		ChainID: big.NewInt(84532),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
			Name:     "USDC",
			Version:  "2",
			Decimals: evm.DefaultDecimals,
		},
	},
	"megaeth": {
		ChainID: big.NewInt(4326),
		DefaultAsset: evm.AssetInfo{
			Address:  "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
			Name:     "MegaUSD",
			Version:  "1",
			Decimals: 18,
		},
	},
	"monad": {
		ChainID: big.NewInt(143),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
			Name:     "USD Coin",
			Version:  "2",
			Decimals: evm.DefaultDecimals,
		},
	},
	"stable": {
		ChainID: big.NewInt(988),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x779Ded0c9e1022225f8E0630b35a9b54bE713736",
			Name:     "USDT0",
			Version:  "1",
			Decimals: evm.DefaultDecimals,
		},
	},
	"stable-testnet": {
		ChainID: big.NewInt(2201),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x78Cf24370174180738C5B8E352B6D14c83a6c9A9",
			Name:     "USDT0",
			Version:  "1",
			Decimals: evm.DefaultDecimals,
		},
	},
	"polygon": {
		ChainID: big.NewInt(137),
		DefaultAsset: evm.AssetInfo{
			Address:  "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
			Name:     "USD Coin",
			Version:  "2",
			Decimals: evm.DefaultDecimals,
		},
	},
	"flare": {
		ChainID: big.NewInt(14),
		DefaultAsset: evm.AssetInfo{
			Address:  "0xe7cd86e13AC4309349F30B3435a9d337750fC82D",
			Name:     "USD₮0",
			Version:  "1",
			Decimals: evm.DefaultDecimals,
		},
	},
	"celo": {
		ChainID: big.NewInt(42220),
		DefaultAsset: evm.AssetInfo{
			Address:  "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
			Name:     "USDC",
			Version:  "2",
			Decimals: evm.DefaultDecimals,
		},
	},
}

Networks is the list of all v1 network names.

Source: mechanisms/evm/v1/network.go:123

var Networks []string

Functions

func GetAssetInfo(network string, assetSymbolOrAddress string) (*evm.AssetInfo, error)

Source: mechanisms/evm/v1/utils.go:29

GetAssetInfo returns information about an asset on a v1 network. If assetSymbolOrAddress is a valid address, returns info for that specific token. If assetSymbolOrAddress is empty or a symbol, attempts to use the network's default asset.

func GetEvmChainId(network string) (*big.Int, error)

Source: mechanisms/evm/v1/utils.go:11

GetEvmChainId returns the chain ID for a v1 legacy network name.

func GetNetworkConfig(network string) (*evm.NetworkConfig, error)

Source: mechanisms/evm/v1/utils.go:19

GetNetworkConfig returns the full configuration for a v1 legacy network name.