ethereumjs/ethereumjs-monorepo
Ethereum L1 Protocol Stack and EVM in TypeScript observed · 2026-08-28
Health v2 · maintenance only
95/100
- Activity 99
- Release rhythm 86
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 0
- age_days: 4072
- days_rel: 12
- days_push: 8
- n_releases_24m: 68
Adoption not part of the score
2756 stars · 852 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A modular TypeScript monorepo of Ethereum execution-layer libraries including an EVM interpreter, transaction and block handling, Merkle Patricia Trie state, and chain configuration. Packages are composable, spec-tested against mainnet hardforks, and run in Node.js or the browser.
Use cases
- execute ethereum smart contract bytecode in javascript
- run and replay ethereum transactions in nodejs
- build and validate ethereum blocks programmatically
- create sign and parse ethereum transactions
- generate merkle proofs for ethereum state
- embed an evm in a browser app
- test custom opcodes and precompiles
- build a lightweight ethereum client without running a full node
When to choose
- you need programmatic access to ethereum execution semantics in TypeScript or JavaScript
- you want composable primitives instead of a full client
- you need browser-compatible ethereum tooling
- you are building tests, tooling, or simulations against specific hardforks
When to avoid
- you need a production full node with JSON-RPC and peer-to-peer networking
- you work in a language other than JavaScript or TypeScript
- you need layer-2 or non-EVM chain support
Facets
library · maturity active
interpreter serialization cryptography developer-tools sdk blockchain developer-tools browser cross-platform ethereum evm virtual-machine merkle-trie smart-contracts execution-layer monorepo blockchain-client cryptocurrency algorithms nodejs typescript javascript
1 source
- readme: https://github.com/ethereumjs/ethereumjs-monorepo · fetched 2026-08-28 · 24c97d6054c1
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| ethereumjs/ethereumjs-monorepo | main | 95 |
For agents
markdown · JSON · MCP: product_card(name="ethereumjs/ethereumjs-monorepo")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem