Network Details

Network Configuration

Mainnet
Testnet

TAC Mainnet - Production network for live applications

Parameter	Value
Network Name	TAC Mainnet
RPC Endpoint	`https://rpc.tac.build`
Chain ID	`239`
Currency Symbol	TAC
Block Explorer	https://explorer.tac.build
Fee Schema	EIP-1559
Block Time	< 2 seconds

Quick Add to Wallet

{
  "chainId": "0xEF",
  "chainName": "TAC Mainnet",
  "rpcUrls": ["https://rpc.tac.build"],
  "nativeCurrency": {
    "name": "TAC",
    "symbol": "TAC",
    "decimals": 18
  },
  "blockExplorerUrls": ["https://explorer.tac.build"]
}

TAC Saint Petersburg Testnet - Current recommended testnet for development

Parameter	Value
Network Name	TAC Saint Petersburg Testnet
RPC Endpoint	`https://spb.rpc.tac.build`
Chain ID	`2391`
Currency Symbol	TAC
Block Explorer	https://spb.explorer.tac.build
Fee Schema	EIP-1559
Block Time	< 2 seconds
Faucet	https://spb.faucet.tac.build

Quick Add to Wallet

{
  "chainId": "0x957",
  "chainName": "TAC Saint Petersburg Testnet",
  "rpcUrls": ["https://spb.rpc.tac.build"],
  "nativeCurrency": {
    "name": "TAC",
    "symbol": "TAC",
    "decimals": 18
  },
  "blockExplorerUrls": ["https://spb.explorer.tac.build"]
}

Getting Testnet Tokens

Refer to Faucet page

Common Integration Issues

MetaMask Setup
Contract Verification

Adding TAC Networks:

Open MetaMask settings
Go to “Networks” → “Add Network”
Use the network parameters above
Save and switch to the new network

Common Issues:

Ensure Chain ID is entered as a number (239, 2391)
Verify RPC URLs are correct
Check that you’re using the latest MetaMask version

Overview

Infrastructure

Oracles

Interoperability

Data and Indexers

Development Tools

Multisig Wallets

RPCs

Network Details

Network Configuration

Quick Add to Wallet

Quick Add to Wallet

Getting Testnet Tokens

Common Integration Issues

​Network Configuration

​Quick Add to Wallet

​Quick Add to Wallet

​Getting Testnet Tokens

​Common Integration Issues

Network Configuration

Quick Add to Wallet

Quick Add to Wallet

Getting Testnet Tokens

Common Integration Issues