# STEEL - Specifications and Testing for the Ethereum Execution Layer

> The Ethereum Foundation STEEL Team's website.

STEEL (Specifications and Testing for the Ethereum Execution Layer) is the Ethereum Foundation team that maintains the Ethereum execution layer specifications and test suites in ethereum/execution-specs.

## About STEEL

- [Home](<https://steel.ethereum.foundation/index.md>): What STEEL is and what it works on
- [About](<https://steel.ethereum.foundation/about/index.md>): Team history and mission
- [Responsibilities](<https://steel.ethereum.foundation/responsibilities/index.md>): Projects and areas STEEL owns
- [Team](<https://steel.ethereum.foundation/team/index.md>): Team members
- [Docs](<https://steel.ethereum.foundation/docs/index.md>): Entry point to the execution-specs documentation

## Blog

- [The Weld: EELS + EEST Will Become a Single Repository](<https://steel.ethereum.foundation/blog/2025-09-11_weld-announcement/index.md>)
- [Testing \`eth\_config\`](<https://steel.ethereum.foundation/blog/2025-09-15_eth-config/index.md>)
- [The Weld is Complete: Welcome to Unified Specs and Tests](<https://steel.ethereum.foundation/blog/2025-11-04_weld_final/index.md>)
- [Osaka Mainnet Testing](<https://steel.ethereum.foundation/blog/2025-11-27_osaka_mainnet_tests/index.md>)
- [Specs as Models: Applying Category-Partition Testing to Ethereum's Consensus Layer](<https://steel.ethereum.foundation/blog/2026-06-11_specs-as-models/index.md>)