Avalanche API

Avalanche C-Chain endpoints use the EVM JSON-RPC Core API over HTTPS and WSS.

Endpoint

Item	Value
Network	Avalanche C-Chain Mainnet
Protocol	EVM JSON-RPC 2.0
Chain ID	`43114` (`0xa86a`)
Public HTTPS	`https://avalanche-rpc.blockreq.com/v1/rpc/public`
Private HTTPS	`https://avalanche-rpc.blockreq.com/v1/rpc/BRQ1P0000000000000000000000000000000000000000000000000000000`
Public WSS	`wss://avalanche-rpc.blockreq.com/v1/rpc/public`
Private WSS	`wss://avalanche-rpc.blockreq.com/v1/rpc/BRQ1P0000000000000000000000000000000000000000000000000000000`

These URLs use the product path /v1/rpc plus /public or BRQ1P0000000000000000000000000000000000000000000000000000000.

Core Methods

Avalanche C-Chain uses the shared EVM JSON-RPC Methods catalog.

Capability	Methods
Latest state	`eth_chainId`, `eth_blockNumber`, `eth_call`, `eth_getBalance`
Archive	old-block state reads
Logs	`eth_getLogs`, `eth_newFilter`, `eth_getFilterChanges`

Archive calls may require a private endpoint. BlockReq does not currently document or guarantee eth_getProof, debug_*, or trace_* on Avalanche C-Chain.