Agent Skills

A knowledge base that makes AI coding assistants Sei-aware — covering contracts, frontend, and ecosystem with Sei-specific facts baked in.

sei-skill is open source. Contribute at github.com/sei-protocol/sei-skill.

sei-skill is a structured knowledge base for AI coding assistants. Install it once, and your assistant gives accurate, Sei-specific answers to Sei questions instead of generic Ethereum defaults. It works with Claude Code, Cursor, Copilot, Windsurf, or any other assistant.

Why this matters

AI assistants are trained on broad Ethereum knowledge, not Sei’s specifics. Without sei-skill, they confidently give you wrong answers like these:

Without sei-skill	With sei-skill
maxFeePerGas in transactions	Legacy gasPrice (Sei does not use the EIP-1559 base fee)
“Finality takes ~12 confirmations”	Instant finality: 1 confirmation is final
SSTORE costs 20,000 gas	SSTORE costs 72,000 gas, the same on Sei Mainnet and Sei Testnet. It is an on-chain parameter that governance can adjust (reference).
PREVRANDAO for randomness	PREVRANDAO is not random on Sei. Use Pyth VRF or Chainlink VRF.
Generic ERC-20 patterns	Sei precompiles, pointer contracts, dual-address UX
@sei-js/evm imports	@sei-js/precompiles (the current package name)

Three knowledge domains

sei-skill covers three areas. You can install all three or only the ones that you need.

Contracts covers EVM smart contract development on Sei:

• Foundry and Hardhat setup for Sei networks
• All Sei precompiles (Staking, Governance, Bank, Distribution, JSON, P256)
• Pointer contracts for cross-VM asset bridging
• Gas optimization and awareness of OCC parallel execution
• Account abstraction (ERC-4337) and contract upgradeability
• Verification workflows on Seiscan
• Security patterns and common errors

Frontend covers dApp UI development:

• wagmi and viem setup with the Sei chain config
• Wallet integration (Sei Global Wallet, MetaMask, Compass, Ledger, EIP-6963)
• Dual-address UX (sei1... and 0x... addresses from the same key)
• Fast-finality patterns for 400ms blocks
• RainbowKit and ConnectKit integration

Ecosystem covers infrastructure and integrations:

• RPC endpoints (public, community, paid SaaS)
• Bridges (LayerZero V2, Circle CCTP v2 for native USDC)
  • IBC is disabled in both directions
• Oracles (Chainlink, Pyth, API3, RedStone)
• Indexers (The Graph, Goldsky, Dune, Moralis)
• DeFi protocols (DragonSwap, Yei, Takara, Saphyre)
• Validators, node operations, and grants

Quick install

git clone https://github.com/sei-protocol/sei-skill
cd sei-skill
./install.sh

By default, the script installs the skill for Claude Code in ~/.claude/skills/sei/. For other AI assistants, see the installation guide.

Next steps

Installation guide

Install sei-skill for Claude Code, Cursor, Copilot, Windsurf, and other assistants. Choose your variant.

Example prompts

See what better answers look like. The prompts cover contracts, frontend, and ecosystem.