Sei Precompiles

Action required: IBC assets on Sei will become inaccessible If you hold USDC.n (USDC via Noble), USDT.kava (Kava USDT), Wormhole-bridged tokens, or any other IBC asset on Sei, you must swap, migrate, or bridge out before the governance proposal to disable inbound/outbound IBC transfers passes and is activated to avoid permanent loss of access. After this, Sei will no longer support IBC bridging of assets from Cosmos-based chains to and from Sei Network. Consult the SIP-03 Migration Guide for the full list of affected assets, required actions, and supported routes. For USDC.n specifically, see: Holders of USDC.n Need to Swap or Migrate.

Learn

EVM

Cosmos-SDK

Nodes

Sei exposes native chain functionality through precompiled contracts at deterministic EVM addresses. You can call them from any EVM library (viem, ethers, wagmi) using the ABIs exported from @sei-js/precompiles — no special SDK required. Available precompiles include:

Bank — query native denom balances (usei, factory tokens)
Staking — delegate, undelegate, query delegations
Distribution — claim staking rewards
Governance — vote on active proposals
JSON — parse JSON payloads within contracts
P256 — verify P-256 elliptic curve signatures

For installation instructions, code examples (viem and ethers), common patterns, and a full working Node.js script, see the precompiles reference:

Precompile Example Usage

Usage examples for all precompiles with viem and ethers — Bank, Staking, Distribution, Governance, JSON, and P256.

Precompile Example Usage

Staking Precompile

Governance Precompile

Distribution Precompile

JSON Precompile

P256 Precompile