> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sei.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Agent Skills

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

<Info>sei-skill is open source. Contribute at [github.com/sei-protocol/sei-skill](https://github.com/sei-protocol/sei-skill)</Info>

sei-skill is a structured knowledge base for AI coding assistants. Install it once and your assistant — Claude Code, Cursor, Copilot, Windsurf, or any other — will answer Sei questions with Sei-specific accuracy instead of generic Ethereum defaults.

## Why this matters

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

| Without sei-skill                   | With sei-skill                                                                                                                                                    |
| ----------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `maxFeePerGas` in transactions      | Legacy `gasPrice` (Sei doesn't use EIP-1559 basefee)                                                                                                              |
| "Finality takes \~12 confirmations" | Instant finality — 1 confirmation is final                                                                                                                        |
| SSTORE costs 20,000 gas             | SSTORE costs 72,000 gas — the same on mainnet and testnet (governance-adjustable on-chain parameter; [reference](/evm/differences-with-ethereum#sstore-gas-cost)) |
| `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 just the ones you need.

**Contracts** — 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, OCC parallel execution awareness
* Account abstraction (ERC-4337), contract upgradeability
* Verification workflows on Seiscan
* Security patterns and common errors

**Frontend** — dApp UI development:

* Wagmi + Viem setup with Sei chain config
* Wallet integration (Sei Global Wallet, MetaMask, Compass, Ledger, EIP-6963)
* Dual-address UX (`sei1...` ↔ `0x...` from the same key)
* Fast-finality patterns for 400ms blocks
* RainbowKit and ConnectKit integration

**Ecosystem** — infrastructure and integrations:

* RPC endpoints (public, community, paid SaaS)
* Bridges (LayerZero V2, Wormhole, Axelar, CCTP)
* Oracles (Chainlink, Pyth, API3, RedStone)
* Indexers (The Graph, Goldsky, Dune, Moralis)
* DeFi protocols (DragonSwap, Yei, Takara, Saphyre)
* Validators, node operations, grants

## Quick install

```bash theme={"dark"}
git clone https://github.com/sei-protocol/sei-skill
cd sei-skill
./install.sh
```

This installs to `~/.claude/skills/sei/` by default (Claude Code). For other AI assistants, see the [Installation Guide](/ai/sei-skill/install).

## Next steps

<CardGroup cols={2}>
  <Card title="Installation Guide" icon="download" href="/ai/sei-skill/install">
    Install for Claude Code, Cursor, Copilot, Windsurf, and more. Choose your variant.
  </Card>

  <Card title="Example Prompts" icon="message" href="/ai/sei-skill/prompts">
    See what better answers look like — prompts across contracts, frontend, and ecosystem.
  </Card>
</CardGroup>