The Ethereum Improvement Proposal
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EIP Gitter

Ethereum Improvement Proposal. EIPs propose and describe changes made to Ethereum Protocol.

People wishing to submit EIPs first should propose their idea an issue or document as pull request. After discussion it will be published here. We are fairly liberal with approving EIPs and try not to be too involved in decision making on behalf of the community. Having an EIP here does not make it a formally accepted standard until its status becomes Active. For a EIP to become Active requires the mutual consent of the community. Those proposing changes should consider that ultimately consent may rest with the consensus of the Ethereum users.


First review EIP-1. Then clone the repository and add your EIP to it. There is a template EIP here. Then submit a Pull Request to Ethereum's EIPs repository.

Current EIPS

Number Title Author Type Layer Status / Discussion
1 EIP Purpose and Guidelines Martin Becze Meta Active
2 Homestead Hard-fork Changes Vitalik Buterin Standard homestead (hard-fork) Accepted
3 Addition of CALLDEPTH opcode Martin Holst Swende Standard Consensus (hard-fork) Draft
4 EIP Classification Joseph Chow Meta Draft
5 Gas Usage for RETURN and CALL* Christian Reitwiessner Standard Consensus (hard-fork) Draft
6 Renaming Suicide Variable Hudson Jameson Meta Draft
7 DELEGATECALL Vitalik Buterin Standard homestead (hard-fork) Accepted
8 devp2p Forward Compatibility Requirements for Homestead Felix Lange Standard Networking Accepted
150 Gas cost changes for IO-heavy operations Vitalik Buterin Standard Consensus (hard-fork) Accepted
155 Simple replay attack protection Vitalik Buterin Standard Consensus (hard-fork) Accepted
160 EXP cost increase Vitalik Buterin Standard Consensus (hard-fork) Accepted
161 State trie clearing (invariant-preserving alternative) Gavin Wood Standard Consensus (hard-fork) Accepted
170 Contract code size limit Vitalik Buterin Standard Consensus (hard-fork) Accepted