# EOSIO/eosjs

General purpose library for the EOSIO blockchain.

Repository: https://github.com/EOSIO/eosjs
Canonical: https://ross.abutalabs.com/products/eosjs
Homepage: http://eosio.github.io/eosjs
Language: TypeScript
License: MIT
License Family: permissive
Archived: true
Last push: 2022-08-01T01:38:25+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3317, "days_push": 1494, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1423, forks 451 (observed 2026-08-28T04:04:41.254035+00:00)

## What it is
eosjs is a TypeScript/JavaScript library for integrating applications with EOSIO-based blockchains via the EOSIO RPC API. It provides transaction building, signing through pluggable signature providers, and JSON-RPC communication for reading chain state and pushing transactions.

## Use cases
- sign and push transactions to an EOSIO blockchain from a web app
- query account balances and chain state via EOSIO JSON-RPC
- build a dApp frontend that interacts with EOSIO smart contracts
- integrate EOS wallet functionality into a Node.js backend
- serialize and deserialize EOSIO transaction data
- connect to an EOS node and fetch block information

## When to choose
- you are building a JavaScript or TypeScript application on an EOSIO-based chain
- you need programmatic transaction signing and RPC access to an EOS node
- you want a maintained official API client for EOSIO

## When to avoid
- you are targeting non-EOSIO blockchains like Ethereum or Solana
- you need a wallet UI or key management vault rather than a signing library
- you require active development, as the project is in maintenance with infrequent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: sdk, rpc, cryptography, http-client
- domain: blockchain, developer-tools, apis
- platform: browser, cross-platform
- tags: eosio, blockchain-api, transaction-signing, typescript, smart-contracts, cryptocurrency, nodejs, javascript

## Member repositories
- EOSIO/eosjs (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:41.254035+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 2026-08-30T04:37:37.821284+00:00, confidence not recorded.
  - readme: https://github.com/EOSIO/eosjs (fetched 2026-08-28T04:04:41.254035+00:00, sha 56c652c7c02d)
  - homepage: http://eosio.github.io/eosjs (fetched 2026-08-29T11:49:56.548858+00:00, sha d426100f01bb)
- Data as of 2026-08-30T08:39:29.467469+00:00.