This ERC describes the JSON-RPC calls used to communicate with ERC-4337 bundler.
It was previously included in ERC-4337 itself, but was extracted into a separate document.
This specification is currently identical to the one previously dedfined in ERC-4337 and does not require any modifications existing bundlers or ERC-4337 deployed contracts.
This is the PR for this new ERC: ERC-4337 extension: New JSON-RPC APIs by forshtat · Pull Request #628 · ethereum/ERCs · GitHub