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feat: add ADI Chain (chain ID 36900) support with USDC.e #2279

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Merged
phdargen merged 1 commit into from
May 18, 2026
Merged

feat: add ADI Chain (chain ID 36900) support with USDC.e #2279

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2 changes: 2 additions & 0 deletions go/.changes/unreleased/adi-chain.yaml
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@@ -0,0 +1,2 @@
kind: added
body: Add ADI Chain (chain ID 36900) support with USDC.e as the default stablecoin
11 changes: 11 additions & 0 deletions go/mechanisms/evm/constants.go
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Expand Up @@ -82,6 +82,7 @@ var (
ChainIDArbSepolia = big.NewInt(421614)
ChainIDRadius = big.NewInt(723487)
ChainIDRadiusTestnet = big.NewInt(72344)
ChainIDADI = big.NewInt(36900)
ChainIDHPP = big.NewInt(190415)
ChainIDHPPSepolia = big.NewInt(181228)

Expand Down Expand Up @@ -225,6 +226,16 @@ var (
SupportsEip2612: true,
},
},
// ADI Chain
"eip155:36900": {
ChainID: ChainIDADI,
DefaultAsset: AssetInfo{
Address: "0x9cb8142aEBBcdc60AF7c97Af897A67A8f3CA71C2", // USDC.e on ADI Chain
Name: "USDC.e",
Version: "2",
Decimals: DefaultDecimals,
},
},
// HPP Mainnet
"eip155:190415": {
ChainID: ChainIDHPP,
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1 change: 1 addition & 0 deletions python/x402/changelog.d/adi-chain.feature.md
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@@ -0,0 +1 @@
Add ADI Chain (chain ID 36900) support with USDC.e as the default stablecoin
10 changes: 10 additions & 0 deletions python/x402/mechanisms/evm/constants.py
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Expand Up @@ -534,6 +534,16 @@ class NetworkConfig(_NetworkConfigRequired, total=False):
"supports_eip2612": True,
},
},
# ADI Chain
"eip155:36900": {
"chain_id": 36900,
"default_asset": {
"address": "0x9cb8142aEBBcdc60AF7c97Af897A67A8f3CA71C2",
"name": "USDC.e",
"version": "2",
"decimals": 6,
},
},
# HPP Mainnet
"eip155:190415": {
"chain_id": 190415,
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5 changes: 5 additions & 0 deletions typescript/.changeset/adi-chain.md
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---
"@x402/evm": minor
---

Add ADI Chain (chain ID 36900) support with USDC.e as the default stablecoin
6 changes: 6 additions & 0 deletions typescript/packages/mechanisms/evm/src/shared/defaultAssets.ts
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Expand Up @@ -121,6 +121,12 @@ export const DEFAULT_STABLECOINS: Record<string, ExactDefaultAssetInfo> = {
assetTransferMethod: "permit2",
supportsEip2612: true,
}, // Radius Testnet SBC (no EIP-3009, supports EIP-2612)
"eip155:36900": {
address: "0x9cb8142aEBBcdc60AF7c97Af897A67A8f3CA71C2",
name: "USDC.e",
version: "2",
decimals: 6,
}, // ADI Chain USDC.e (EIP-3009 supported)
"eip155:190415": {
address: "0x401eCb1D350407f13ba348573E5630B83638E30D",
name: "Bridged USDC",
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