# ChainSafe/lodestar

🌟 Ethereum Consensus client for the Zig and TypeScript ecosystem

Repository: https://github.com/ChainSafe/lodestar
Canonical: https://ross.abutalabs.com/products/lodestar
Homepage: https://lodestar.chainsafe.io
Language: TypeScript
License: Apache-2.0
License Family: permissive
Topics: ethereum, beacon-chain, proof-of-stake, typescript, eth2, serenity, blockchain
Last push: 2026-08-26T19:13:02+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 2994, "days_push": 7, "days_rel": 21, "gap_med": 21.5, "n_releases_24m": 31}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1419, forks 478 (observed 2026-08-28T04:04:40.285070+00:00)

## What it is
Lodestar is a TypeScript implementation of the Ethereum Consensus (proof-of-stake) specification, providing a beacon node, validator client, and CLI. It also ships reusable TypeScript libraries for building Ethereum-related applications.

## Use cases
- run an ethereum beacon node on mainnet or a testnet
- run a proof-of-stake validator client
- spin up a local ethereum consensus testnet
- build a typescript app that interacts with the beacon chain
- implement light clients or consensus tooling in javascript

## When to choose
- you want a Node.js/TypeScript consensus client or to embed consensus logic in a JS project
- you need a well-maintained, spec-compliant beacon node with Docker support

## When to avoid
- you need a consensus client in another language or with lower resource usage
- you only need an execution-layer (EL) client

## Facets
- artifact type: application
- maturity: active
- function: cli, http-server, sdk, p2p, cryptography
- domain: blockchain, developer-tools, microservices
- platform: windows, cli
- tags: ethereum, beacon-node, consensus-client, proof-of-stake, typescript, eth2, validator-client, light-client, cryptocurrency, nodejs, docker, linux, macos

## Member repositories
- ChainSafe/lodestar (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:40.285070+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:37:50.987939+00:00, confidence not recorded.
  - readme: https://github.com/ChainSafe/lodestar (fetched 2026-08-28T04:04:40.285070+00:00, sha b6138b047699)
  - homepage: https://lodestar.chainsafe.io (fetched 2026-08-29T11:50:26.417503+00:00, sha ae7a26639909)
- Data as of 2026-08-30T08:39:29.467469+00:00.