Using Hardhat 3 with a HTTP proxy

Hardhat supports the http_proxy environment variable. When this variable is set, Hardhat will send its requests through the given proxy for things like JSON-RPC requests, mainnet forking and downloading compilers.

There’s also support for the no_proxy variable, which accepts a comma separated list of hosts or "*". Any host included in this list will not be proxied. Note that requests to "localhost" or "127.0.0.1" are never proxied.