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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

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Try it live

Precompiles are callable like any contract — even with a plain eth_call from the browser. This hits the Bank precompile at 0x0000000000000000000000000000000000001001 on Sei mainnet, calling name("usei"). The response is ABI-encoded; it contains the bytes 53 45 49 — ASCII for SEI. 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.
For the full ABI reference and every available function on each precompile:

Staking Precompile

Governance Precompile

Distribution Precompile

JSON Precompile

P256 Precompile