Vara.eth Contract Writer

Use this skill when writing, changing, or reviewing a Rust contract for Vara.eth with Sails.

Core Rule

Treat the target as Vara.eth, not generic Vara, generic Gear, or EVM Solidity. Use Sails with the ethexe feature and the Vara.eth artifact workflow.

Keep examples minimal, runnable, and explicit about generated artifacts. When contract behavior intersects with deployment, ABI, RPC, or runtime semantics, verify against ../../references/source-map.md.

Environment

Make sure the environment has:

• Rust toolchain.
• wasm32v1-none, installed with rustup target add wasm32v1-none.
• sails-cli, installed with cargo install sails-cli.

Scaffold new contracts with --eth: