# Smart Contracts
The ETHx Smart Contracts play a crucial role in the Stader-ETHx protocol, serving as the fundamental building blocks of the entire network. These contracts form the foundation upon which various components of the system are constructed, such as the Stader Node CLI and the user interfaces for end user applications. Here is a comprehensive list of the ETHx Smart Contracts. This list serves as a reference point for ETH staker, node operators, developers, researchers, and enthusiasts who are interested in exploring the inner workings of the Stader-ETHx protocol and understanding how the different components interact with each other. ### ETHx Mainnet Smart Contracts
Smart ContractAddress
Stader config0x4ABEF2263d5A5ED582FC9A9789a41D85b68d69DB
VaultFactory0x03ABEEC03BF39ac5A5C8886cF3496326d8164E1E
Auction contract0x85A22763f94D703d2ee39E9374616ae4C1612569
ETHx0xA35b1B31Ce002FBF2058D22F30f95D405200A15b
Operator reward collector0x84ffDC9De310144D889540A49052F6d1AdB2C335
Penalty contract0x84645f1B80475992Df2C65c28bE6688d15dc6ED6
PermissionedNodeRegistry0xaf42d795A6D279e9DCc19DC0eE1cE3ecd4ecf5dD
PermissionedPool0x09134C643A6B95D342BdAf081Fa473338F066572
PermissionlessNodeRegistry0x4f4Bfa0861F62309934a5551E0B2541Ee82fdcF1
PermissionlessPool0xd1a72Bd052e0d65B7c26D3dd97A98B74AcbBb6c5
PoolSelector0x62e0b431990Ea128fe685E764FB04e7d604603B0
PoolUtils0xeDA89ed8F89D786D816F8E14CF8d2F90c6BF763f
SDCollateral0x7Af4730cc8EbAd1a050dcad5c03c33D2793EE91f
Permissioned socializingPool0x9d4C3166c59412CEdBe7d901f5fDe41903a1d6Fc
Permissionless socializingPool0x1DE458031bFbe5689deD5A8b9ed57e1E79EaB2A4
Insurance fund0xbe3781CE437Cc3fC8c8167913B4d462347D11F20
Stader oracle0xF64bAe65f6f2a5277571143A24FaaFDFC0C2a737
StaderStakingPoolManager0xcf5EA1b38380f6aF39068375516Daf40Ed70D299
UserWithdrawManager0x9F0491B32DBce587c50c4C43AB303b06478193A7
**SD token address (Mainnet) :** [0x30D20208d987713f46DFD34EF128Bb16C404D10f](https://etherscan.io/address/0x30D20208d987713f46DFD34EF128Bb16C404D10f) ### ETHx Testnet Smart Contracts
Smart ContractAddress
Stader config0x2aa6cEd8Cf0a93884216BaE5dbF4299932aB577B
VaultFactory0x0BDb1a6D4Ec7e86B95cf2435AF58fbc6776F4ed2
Auction contract0xfCD9b640bF620BD7E7d3085C5462A5f7fcaE01e6
ETHx0x3338eCd3ab3d3503c55c931d759fA6d78d287236
Operator reward collector0xbb31ab083C5831cAa17eca5750c47119C0F76933
Penalty contract0x55f47deD9BDd3Cc4A5dc49A904A628F932e3a393
PermissionedNodeRegistry0xA8BbaD2C6d3F2a28EdB85Fc1c87B300EAC77A00d
PermissionedPool0x8A52180A900E4363E34391034764ac23db148e82
PermissionlessNodeRegistry0x14F59038b249AA9f44bC3FB7DBfC291C5B21f7F8
PermissionlessPool0xccD435de0E3bF8Cf77d21F187f62cdc2B2ad7c32
PoolSelector0xe9ccD3384E0670F7BC679fF45491f22A145fC864
PoolUtils0xEf08BAdB119ddb09b9Ab28ec422f49947fA204BB
SDCollateral0x78CAa9aA3820254045c90C3d07C3CB841E7F7529
Permissioned socializingPool0x4E1d40bccC6E41bACfa69a3ff09A137cAC0218C7
Permissionless socializingPool0x34E8Fac4962AF984d6040cec240d1d12eFfac14E
Insurance fund0x7D6CE3D6bA2D7020307F90b6dfD4ABFe09F3eCE6
Stader oracle0x22F8E700ff3912f3Caba5e039F6dfF1a24390E80
StaderStakingPoolManager0xd0e400Ec6Ed9C803A9D9D3a602494393E806F823
UserWithdrawManager0x1048Eca024cB2Ba5eA720Ac057D804E95a809Fc8
**SD token address (Testnet):** [0x0406f539f24Be69baa8b88ED6eABEdb7b3cfdc60](https://goerli.etherscan.io/address/0x0406f539f24Be69baa8b88ED6eABEdb7b3cfdc60) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://staderlabs.gitbook.io/ethereum/smart-contracts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.