# DefiLlama/chainlist

Repository: https://github.com/DefiLlama/chainlist
Canonical: https://ross.abutalabs.com/products/chainlist
Homepage: https://chainlist.org
Language: JavaScript
License: GPL-3.0
License Family: copyleft
Last push: 2026-08-26T17:26:26+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 1641, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3079, forks 3684 (observed 2026-08-28T04:07:41.860684+00:00)

## What it is
Chainlist is a web application and open dataset by DefiLlama that catalogs EVM-compatible blockchain networks, their Chain IDs, and public RPC endpoints. Users can connect their wallets to the correct chain, and developers can consume the data via a JSON API or contribute new chains and RPCs through pull requests.

## Use cases
- find RPC endpoints for an EVM chain
- connect my wallet to a new blockchain network
- look up a chain ID for a network
- get a JSON list of all EVM chains and RPCs
- add my blockchain network to a public registry
- configure Web3 middleware with the correct network ID

## When to choose
- you need accurate Chain ID and RPC data for EVM networks
- you want a community-maintained registry of blockchain networks
- you need a programmatic API for chain metadata
- you want users to add your network to their wallets easily

## When to avoid
- you need non-EVM chains like Bitcoin or Solana
- you need guaranteed uptime or performance from listed public RPCs
- you need a wallet or node implementation itself

## Facets
- artifact type: application
- maturity: active
- function: web-framework, developer-tools, sdk
- domain: blockchain, web-development, developer-tools
- platform: -
- tags: evm, web3, rpc, chain-ids, wallet-connections, blockchain-networks, defillama, cryptocurrency, web-server, nodejs, javascript

## Member repositories
- DefiLlama/chainlist (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:41.860684+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 2026-08-29T18:46:32.069972+00:00, confidence not recorded.
  - readme: https://github.com/DefiLlama/chainlist (fetched 2026-08-28T04:07:41.860684+00:00, sha 9c2bd3433817)
  - homepage: https://chainlist.org (fetched 2026-08-29T09:43:14.429591+00:00, sha abb55b716357)
- Data as of 2026-08-30T08:39:29.467469+00:00.