Japanese version: /ja/doc/introduction.html

What is Kasane

TL;DR

Kasane is a project that provides EVM execution on ICP canisters.
It exposes two public access paths: the canister Candid API and a Gateway JSON-RPC endpoint.
Its JSON-RPC is not full Ethereum compatibility; it is a restricted compatibility layer for development workflows.
The compatibility target is Ethereum JSON-RPC plus EVM execution semantics, while OP/Superchain compatibility is out of scope.

What You Can Do

• Use Ethereum-style JSON-RPC for basic reads and transaction submission
• Call EVM functionality directly through canister query/update methods
• Pull export_blocks in an indexer and persist data to Postgres

Key Constraints (Current Implementation)

• Ethereum JSON-RPC compatibility is partial (see compatibility pages for unsupported methods)
• Node operation workflows are out of scope for this book

Compatibility Positioning

• Explicit target: restricted Ethereum JSON-RPC compatibility
• Non-goal: OP Stack / Superchain compatibility
• Important: success of eth_sendRawTransaction means submit success only; execution success must be checked with receipt status=0x1

Intended Readers

• EVM dApp developers
• Smart contract developers
• Backend integration developers
• Indexer developers

Sources

• README.md (operational summary and compatibility policy)
• tools/rpc-gateway/README.md (Gateway compatibility matrix)
• crates/ic-evm-wrapper/evm_canister.did (public interface)

Source of Truth for Compatibility

• Canonical JSON-RPC policy: ./rpc/overview.md
• Detailed method differences: ./compatibility/json-rpc-deviations.md