Yaci - Local Cardano Devnet

Overview

Yaci DevKit provides a customizable Cardano devnet that you can create, configure, and reset in seconds. It eliminates the friction of blockchain development by giving you a local environment optimized for rapid iteration.

When to use Yaci

• Smart contract development: Test Plutus scripts without spending real ADA
• Integration testing: Validate your dApp against a real Cardano environment
• CI/CD pipelines: Automated testing with reproducible blockchain state
• Learning and prototyping: Experiment with Cardano without consequences

Key benefits

Quick start

Connect to the Mesh-hosted Yaci devnet immediately - no setup required:

import { YaciProvider } from "@meshsdk/core";

// Connect to Mesh's hosted devnet
const provider = new YaciProvider();

// Fetch protocol parameters
const params = await provider.fetchProtocolParameters();
console.log("Connected to Yaci devnet:", params);

// Fetch UTxOs for an address
const utxos = await provider.fetchAddressUTxOs(
  "addr_test1qpvx0sacufuypa2k4sngk7q40zc5c4npl337uusdh64kv0uafhxhu32dys6pvn6wlw8dav6cmp4pmtv7cc3yel9uu0nq93swx9"
);

The hosted devnet is available at: https://yaci-node.meshjs.dev/api/v1/

Documentation

How Yaci works

1. Start DevKit: Launch the Docker containers with a single command
2. Create devnet: Configure your network parameters (era, fees, epoch length)
3. Fund wallets: Use the built-in faucet to top up test addresses
4. Build transactions: Use Mesh SDK with YaciProvider just like production
5. Reset and repeat: Wipe the chain state and start fresh anytime

Architecture

Related resources

• Getting Started - Install and configure Yaci DevKit
• Build Transactions - Create and submit transactions
• Mesh Cloud Yaci - Hosted Yaci devnet service
• Yaci DevKit GitHub - Official repository