Always verify contract addresses from official sources before interacting with them
Contract Suite
Biconomy is versioning our smart contracts by groups. One “Suite” version contains many different versioned contracts within itself. The contracts being versioned are:- Nexus Account
- Modular Execution Environment (MEE) K1 Validator (ERC-7579 Module)
- Nexus Boostrap & Factory
- Composability & Fusion Utils (Composable Storage, ETH Forwarder)
Versions
MEE Contracts Suite v2.1.0 (Current)
MEE Contracts Suite v2.1.0 (Current)
What’s New: K1 MEE module introduced - enables ERC-7702-delegated EOAs to own Nexus accounts
Nexus & MEE Validator
| Contract Name | Contract Address |
|---|---|
| Nexus Implementation v1.2.0 | 0x00000000383e8cBe298514674Ea60Ee1d1de50ac |
| MEE K1 Validator v1.0.3 | 0x0000000031ef4155C978d48a8A7d4EDba03b04fE |
| Nexus Bootstrap v1.2.1 | 0x0000003eDf18913c01cBc482C978bBD3D6E8ffA3 |
| Nexus Account Factory | 0x0000006648ED9B2B842552BE63Af870bC74af837 |
Composability & Utility
| Contract Name | Contract Address |
|---|---|
| Composable Storage | 0x0000000671eb337E12fe5dB0e788F32e1D71B183 |
| ETH Forwarder | 0x000000Afe527A978Ecb761008Af475cfF04132a1 |
MEE Contracts Suite v2.0.0
MEE Contracts Suite v2.0.0
Major release with Nexus 1.2.0, ERC-7702 support, and native composability
Nexus & MEE
| Contract Name | Contract Address |
|---|---|
| Nexus Implementation v1.2.0 | 0x000000004F43C49e93C970E84001853a70923B03 |
| MEE K1 Validator v1.0.1 | 0x00000000d12897DDAdC2044614A9677B191A2d95 |
| Nexus Bootstrap v1.2.1 | 0x00000000D3254452a909E4eeD47455Af7E27C289 |
| Nexus Account Factory | 0x000000001D1D5004a02bAfAb9de2D6CE5b7B13de |
| MEE EntryPoint & Paymaster | 0xE854C84cD68fC434cB3B0042c29235D452cAD977 |
Composability & Utility
| Contract Name | Contract Address |
|---|---|
| Composable Storage | 0x0000000671eb337E12fe5dB0e788F32e1D71B183 |
| ETH Forwarder | 0x000000Afe527A978Ecb761008Af475cfF04132a1 |
MEE Contracts Suite v2.0.0 Pre-cancun
MEE Contracts Suite v2.0.0 Pre-cancun
Compiled for EVM Paris (No PUSH0, no MCOPY, no TSTORE)
Nexus & MEE
| Contract Name | Contract Address |
|---|---|
| Nexus Implementation v1.0.2 | 0x000000001964d23C59962Fc7A912872EE8fB3b6A |
| MEE K1 Validator v1.0.3 | 0x00000000E894100bEcFc7c934Ab7aC8FBA08A44c |
| Nexus Bootstrap v1.0.0 | 0x000000c4781Be3349F81d341027fd7A4EdFa4Dd2 |
| Nexus Account Factory | 0x0000000C8B6b3329cEa5d15C9d8C15F1f254ec3C |
Composability & Utility
| Contract Name | Contract Address |
|---|---|
| Composability Module | 0x000000eff5C221A6bdB12381868307c9Db5eB462 |
| Composable Storage | 0x0000002C2A3b6DA7dfa38AAcdD950097B30B108d |
| ETH Forwarder | 0x000000001f1c68bD5bF69aa1cCc1d429700D41Da |
MEE Contracts Suite v1.0.1
MEE Contracts Suite v1.0.1
Added Nexus Account Factory at
0x000000903887EA36EBe051038287f49fD4A07733MEE Contracts Suite v1.0.0
MEE Contracts Suite v1.0.0
Initial release - Requires manual installation of MEE K1 validator and Composability module
Nexus & MEE
| Contract Name | Contract Address |
|---|---|
| Nexus Implementation v1.0.2 | 0x000000aC74357BFEa72BBD0781833631F732cf19 |
| MEE K1 Validator v1.0.1 | 0x00000000d12897DDAdC2044614A9677B191A2d95 |
| Nexus Bootstrap v1.0.0 | 0x879fa30248eeb693dcCE3eA94a743622170a3658 |
| Nexus Account Factory | 0x000000c3A93d2c5E02Cb053AC675665b1c4217F9 |
| MEE EntryPoint & Paymaster | 0xE854C84cD68fC434cB3B0042c29235D452cAD977 |
Composability & Utility
| Contract Name | Contract Address |
|---|---|
| Composability Module | 0x00000004430bB055dB66eBef6Fe5Ee1DA9668B10 |
| Composable Storage | 0x0000000671eb337E12fe5dB0e788F32e1D71B183 |
| ETH Forwarder | 0x000000Afe527A978Ecb761008Af475cfF04132a1 |
Nexus Audits
Stack Audits
MEE Stack
Audited by Zenith
- MEE EntryPoint
- Node Paymaster
- MEEK1 Validator
Composability Stack
Multiple Auditors
Legacy Contracts
These contracts are deprecated. Use the latest version for new deployments.
Nexus v1.0.1 Production
Nexus v1.0.1 Production
| Contract Name | Contract Address |
|---|---|
| Nexus Implementation | 0x000000008761E87F023f65c49DC9cb1C7EdFEaaf |
| K1 Validator | 0x0000002D6DB27c52E3C11c1Cf24072004AC75cBa |
| K1 Validator Factory | 0x00000024115AA990F0bAE0B6b0D5B8F68b684cd6 |
| Account Factory | 0x000000226cada0d8b36034F5D5c06855F59F6F3A |
| Bootstrap | 0x000000F5b753Fdd20C5CA2D7c1210b3Ab1EA5903 |
| EntryPoint V7 | 0x0000000071727de22e5e9d8baf0edac6f37da032 |
Paymaster Contracts
Paymaster Contracts
Base & Optimism
| Contract Name | Contract Address |
|---|---|
| Sponsorship Paymaster | 0x0000006087310897e0BFfcb3f0Ed3704f7146852 |
| Token Paymaster | 0x00000000301515A5410e0d768aF4f53c416edf19 |
Other Chains
| Contract Name | Contract Address |
|---|---|
| Sponsorship Paymaster | 0x00000072a5F551D6E80b2f6ad4fB256A27841Bbc |
| Token Paymaster | 0x00000000301515A5410e0d768aF4f53c416edf19 |
Integration Support
Need help integrating these contracts? Check our integration guide for detailed instructions and code examples.