EVM interface Michelson interface Native atomic composability

Build on
Tezos X

Public testnet for Tezos X — the execution layer where the EVM and Michelson interfaces share a single chain, secured by Tezos L1. Deploy on Tezos X with the toolstack you already know — Solidity or Michelson — and have your contracts compose atomically with anything on the chain — EVM or Michelson — in a single transaction.

Get connected

Add the network to your wallet

MetaMask for the EVM interface, Temple or octez-client for the Michelson interface. Each account holds two addresses — 0x… for EVM and tz1… for Michelson — on the same chain, with separate balances.

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MetaMask

EVM interface · Solidity contracts

One-click setup via wallet_addEthereumChain. No MetaMask? Install it ↗

Or add manually

Network name Tezos X Previewnet

RPC URL evm.previewnet.tezosx.nomadic-labs.com

Chain ID —

Currency symbol XTZ

Block explorer blockscout.previewnet.tezosx.nomadic-labs.com

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Michelson wallets

Temple, Kukai, Umami, octez-client — any Tezos-compatible wallet

RPC endpoint michelson.previewnet.tezosx.nomadic-labs.com

Michelson chain ID —

Block explorer tzkt.previewnet.tezosx.nomadic-labs.com

octez-client \
  --endpoint https://michelson.previewnet.tezosx.nomadic-labs.com \
  config update

Get started

Fund your wallet

Get testnet XTZ before anything else — works for both interfaces.

Faucet

Fund any address — MetaMask (0x…) or Temple (tz1…) — with testnet XTZ in seconds. No registration, no rate limit.

Get testnet XTZ ↗

Move funds

Bridge & withdraw

Deposit from Tezos L1 to the Previewnet, or withdraw back — same UI for both directions.

Coming soon

Bridge

Move XTZ between Tezos L1 and the Tezos X Previewnet. Supports both deposit and withdraw flows through a single interface.

Open bridge ↗

Explore the chain

Inspect what's on-chain

A dedicated explorer per interface — plus a unified view that follows atomic cross-interface calls across both.

EVM

Blockscout ↗

Inspect EVM transactions, deployed contracts, token transfers, and contract verification on the Previewnet.

Michelson

TzKT ↗

Query Michelson contracts, operations, and on-chain storage via the TzKT indexer and REST API.

Experimental

Cross-interface explorer ↗

Follow an atomic call end-to-end — across the EVM and Michelson interfaces — in a single timeline. Bridges Blockscout and TzKT data.

What you can build

Live demo on Previewnet

A live demo showcasing what native atomic composability unlocks.

Composability · Demo

Potluck ↗

A game where every button press is a single transaction that atomically touches both the EVM and Michelson interfaces in the same block.

Demonstrates Native atomic composability: an EVM contract calls a Michelson contract atomically, with no intermediate steps or trusted relayers.

Tools

Tools for builders

Libraries, services, and integrations to write, deploy, and use Tezos X.

Composability · Library

tx-codec ↗

Formally verified Solidity library for encoding Michelson values from EVM contracts. Lean-4 spec, 414 differential tests against octez-codec, 40 Halmos symbolic proofs. Drop-in companion for any contract calling Michelson atomically.

Wallet · Integration

Tezos X Relayer ↗

Drive any EVM dApp with a Tezos wallet — no EVM account needed. Implements window.ethereum and EIP-6963 (RainbowKit, wagmi) by routing through the cross-interface gateway. Ships as a script tag, userscript, or Chrome extension.

Coming soon

DEX deployment ↗

One-click DEX deployment on the Previewnet — UI-driven, no Solidity required. Useful as a starting point for liquidity and integration tests.

Background reading: Tezos X — From Roadmap to Reality ↗

Network