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Stable is a Layer 1 where USDT0 is the native gas token, and standard EVM tooling (Solidity, Foundry, Hardhat, ethers, viem, and the eth_* JSON-RPC methods) works unchanged. Point your RPC at Stable and confirm the chain ID: 
988
make sure you have foundry installed to test the following command: 
cast chain-id --rpc-url https://rpc.stable.xyz
For the full list of endpoints (mainnet and testnet), see Connect. If you haven’t sent a transaction on Stable yet, start with Quick start for a quick walkthrough on testnet. Then pick the path that matches what you’re building:
  • Wallets, delegation, and agent accounts → Accounts.
  • Moving USDT0 or building payment flows → Payments.
  • Deploying smart contracts → Contracts.
  • Wiring AI editors or building agent-paid services → Agent settlement.
  • Running a full or archive node, ecosystem providers, or covering gas → Infrastructure.
Before you ship, Core concepts covers four behaviors that differ from Ethereum (USDT0 dual role, guaranteed blockspace, transfer aggregator, EVM finality). Production readiness is the mainnet-readiness checklist.
Last modified on June 2, 2026