8948159a40
* Add AI assistant documentation and commands Adds structured documentation for AI coding assistants: - CLAUDE.md / AGENTS.md: Lightweight entry points with critical rules - .ai/: Shared knowledge base (CODE_REVIEW.md, DEVELOPMENT.md, ISSUES.md) - .claude/commands/: Claude Code skills for review, issue, release - .github/copilot-instructions.md: GitHub Copilot instructions Supports Claude Code, OpenAI Codex, and GitHub Copilot with modular, pointer-based structure for maintainability. Includes guidelines for AI assistants to prompt developers about updating these docs after receiving feedback, creating a continuous improvement loop. * Add parallel development tip with git worktrees * Address review feedback - Add missing details to DEVELOPMENT.md: fork-specific testing, database backends, cross-compilation targets, make test-release - Simplify AGENTS.md to pointer to CLAUDE.md (Codex can read files) * Address review feedback - Add priority signaling: Critical vs Important vs Good Practices - Restore actionable file references (canonical_head.rs, test_utils.rs, etc.) - Add Rayon CPU oversubscription context - Add tracing span guidelines - Simplify AGENTS.md to pointer * Address review feedback and remove Copilot instructions - Restore anti-patterns section (over-engineering, unnecessary complexity) - Restore design principles (simplicity first, high cohesion) - Add architecture guidance (dependency bloat, schema migrations, backwards compat) - Improve natural language guidance for AI comments - Add try_read lock pattern - Remove copilot-instructions.md (can't follow file refs, untestable)
Lighthouse: Ethereum consensus client
An open-source Ethereum consensus client, written in Rust and maintained by Sigma Prime.
Overview
Lighthouse is:
- Ready for use on Ethereum consensus mainnet.
- Fully open-source, licensed under Apache 2.0.
- Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
- Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
- Funded by various organisations, including Sigma Prime, the Ethereum Foundation, Consensys, the Decentralization Foundation and private individuals.
- Actively involved in the specification and security analysis of the Ethereum proof-of-stake consensus specification.
Staking Deposit Contract
The Lighthouse team acknowledges
0x00000000219ab540356cBB839Cbe05303d7705Fa
as the canonical staking deposit contract address.
Documentation
The Lighthouse Book contains information for users and developers.
The Lighthouse team maintains a blog at https://blog.sigmaprime.io/tag/lighthouse which contains periodic progress updates, roadmap insights and interesting findings.
Branches
Lighthouse maintains two permanent branches:
stable: Always points to the latest stable release.- This is ideal for most users.
unstable: Used for development, contains the latest PRs.- Developers should base their PRs on this branch.
Contributing
Lighthouse welcomes contributors.
If you are looking to contribute, please head to the Contributing section of the Lighthouse book.
Contact
The best place for discussion is the Lighthouse Discord server.
Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.
Encrypt sensitive messages using our PGP key.
Donations
Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:
- Gitcoin Grants.
- Ethereum address:
0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b(donation.sigmaprime.eth).