# Celo RPC and network details

Source: https://www.alchemy.com/rpc/celo

Celo is a mobile-first, EVM-compatible L2 built with OP-Stack (the chain was formerly an L1 and migrated to Optimism in March 2025). It features ultra-light clients, phone number mapping, and gas fee abstraction for easy smartphone onboarding, and its support of cUSD and cEUR stablecoins power payments in 100+ countries.

## Network details

- Network: Mainnet
- Chain ID: 42220
- Environment: Mainnet
- Category: L1
- Native token: CELO
- Gas token: CELO
- Block time: 1s

## Endpoints

- Alchemy RPC: https://celo-mainnet.g.alchemy.com/v2/API_KEY
- Alchemy WebSocket: wss://celo-mainnet.g.alchemy.com/v2/API_KEY

Replace API_KEY with a key from https://dashboard.alchemy.com/signup.

## Alchemy product support

Supported on Celo: RPC API, Block Timestamp API, Debug API, Bundler API, Token API, NFT API, Websockets, Gas Manager, Webhooks, Transfers API.

Not currently supported: Transaction receipts API, User OP Simulation API, Prices API, Trace API, gRPC.

## Build on Alchemy

Alchemy offers reliable Celo RPC endpoints designed for availability at scale. In addition, Alchemy offers enriched data APIs and a range of developer tools that make it easy to build and scale on Celo.

## Available networks

- Celo Sepolia (testnet): https://www.alchemy.com/rpc/celo-sepolia

## Links

- Alchemy docs: https://www.alchemy.com/docs/reference/celo-api-quickstart
- Official docs: https://docs.celo.org/
- Website: https://celo.org/
- GitHub: https://github.com/celo-org
- Block explorer: https://celoscan.io/
- Bridge: https://docs.celo.org/protocol/bridge