Deploy and interact with smart contracts on Sei's parallelized EVM using precompiles and pointer contracts.
npx skills add https://github.com/andresdefi/cryptoskills --skill sei-andresdefi
Please help me install this Agent Skill. Skill: sei Source: https://github.com/andresdefi/cryptoskills/tree/main/skills/sei Command: npx skills add https://github.com/andresdefi/cryptoskills --skill sei-andresdefi
paris EVM target. - Precompile Contracts: Documents all nine precompiles (Bank, Wasm, JSON, Address, Staking, Governance, Distribution, IBC, Pointer) with Solidity interfaces and call restrictions. - EVM-CosmWasm Interop: Explains pointer contracts for CW20/ERC20 token bridging, associated balances for native Cosmos tokens, and Wasm precompile queries. - Use Case: Deploy an ERC20 token to Sei mainnet with Foundry, verify it on Seitrace, then query a CW20 token's balance from Solidity via its pointer contract. ## Quick Start Ask the agent to deploy a Solidity contract to Sei testnet using Foundry with the correct paris EVM version and chain ID 1328.High-intent search queries and answers about installing and using this skill.
Deploy with standard Foundry or Hardhat using chain ID 1329 for mainnet or 1328 for testnet. Set evmVersion to "paris" in your compiler config, since Sei does not support the PUSH0 opcode from Shanghai.
Sei's EVM targets the paris hard fork and does not support PUSH0, which Solidity 0.8.20+ includes by default. Set evm_version = "paris" in foundry.toml or evmVersion: "paris" in hardhat.config.ts, then clean and recompile.
Precompiles are built-in contracts at fixed addresses (0x...1001 through 0x...100b) exposing Cosmos functionality like staking, governance, IBC, and address conversion to Solidity. Call them with CALL only; DELEGATECALL and STATICCALL fail for state-changing operations.
Pointer contracts are lightweight proxies letting a CW20 token be accessed as an ERC20 in the EVM, and vice versa. Query the Pointer precompile at 0x...100b with getPointer to find a token's pointer address, or register one via the seid CLI.
Yes, Sei EVM is bytecode-compatible with Ethereum, so Foundry, Hardhat, viem, and ethers.js work without custom plugins. The only required change is setting the EVM version to paris and using Sei's chain IDs and RPC endpoints.
SEI uses 18 decimals in the EVM but 6 decimals (usei) in the Cosmos bank module. The chain converts automatically across precompiles and pointer contracts, so avoid manual conversion and use bigint for all amounts.
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