fever networks

Manage blockchain network configurations for your project. This command group allows you to list popular networks, add custom RPCs, select a default network for deployments, and view network status.

Network configurations are stored in f9s/networks.yml in your project root.

Subcommands

list

List available blockchain networks. By default, it shows popular testnets. You can filter to show mainnets or networks configured for your project.

Usage

fever networks list [options]

Options

Option	Description
--mainnet	Display popular mainnet networks.
--project	Display networks configured in your project's f9s/networks.yml.

Examples

List Popular Testnets (Default)

$ fever networks list

🔥 FEVER CLI - Networks
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

📡 Popular EVM Testnets (2025)

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
#   Network                    Chain ID    Currency    RPCs
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   1. Localhost                 1337        ETH         1
   2. Ethereum Sepolia          11155111    ETH         1
   3. Base Sepolia              84532       ETH         1
   4. Arbitrum Sepolia          421614      ETH         1
   5. Polygon Amoy              80002       MATIC       1
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

💡 Tips:
   • Use 'fever networks select' to add a network to your project
   • Use 'fever networks --mainnet' to see mainnets
   • Use 'fever networks list --project' to see project networks

List Popular Mainnets

fever networks list --mainnet

List Project Networks

fever networks list --project

select

Interactively select a network from a list of popular networks to add to your project's f9s/networks.yml.

Usage

fever networks select [options]

Options

Option	Description
--mainnet	Display popular mainnet networks for selection.

Example

$ fever networks select

⚠️  No network configuration found
? Would you like to initialize f9s/networks.yml? (Y/n) Y
✅ Initialized f9s/networks.yml

🔍 Loading available networks...

🔥 Select Network for Project

? Choose a network to add: (Use arrow keys)
❯ Ethereum Sepolia (11155111) - ETH
  Base Sepolia (84532) - ETH
  Polygon Amoy (80002) - MATIC
  Cancel selection

✅ Network added to project!

Network Details:
   Name: Ethereum Sepolia
   Chain ID: 11155111
   Currency: ETH
   RPC: https://rpc.sepolia.org
   Explorer: https://sepolia.etherscan.io

📁 Saved to: f9s/networks.yml
✨ Set as default network for deployments

add

Add a custom network to your project or globally. This is useful for private networks, local development chains, or networks not listed on Chainlist.

Usage

fever networks add [options]

Options

Option	Description
--chainId <id>	The chain ID of the network.
--rpc <url>	The RPC URL for the network.
--name <name>	A human-readable name for the network.
--symbol <symbol>	The native currency symbol (e.g., ETH, MATIC).
--explorer <url>	The block explorer URL (optional).
--testnet	Mark the network as a testnet (default is mainnet).
--global	Add the network globally (available to all projects). By default, it's added only to the current project.
--local	Quick add a localhost network (Chain ID 1337, RPC http://localhost:8545).

Examples

Add a Custom Testnet

fever networks add \
  --name "My Private Testnet" \
  --rpc "http://192.168.1.100:8545" \
  --chainId 12345 \
  --symbol MYT \
  --testnet

Quick Add Localhost

fever networks add --local

✅ Local network added to project!

Network Details:
   Name: Localhost
   Chain ID: 1337
   Symbol: ETH
   RPC: http://localhost:8545
   Type: Local

use <chainId>

Set a network as the active (default) network for deployments in your project. This network will be used if no network is specified in the manifest or via command-line flags.

Usage

fever networks use <chainId>

Argument

Argument	Description
<chainId>	(Required) The chain ID of the network to set as active.

Example

fever networks use 11155111

✅ Default network switched!

Default Network:
   Name: Ethereum Sepolia
   Chain ID: 11155111
   Currency: ETH
   RPC: https://rpc.sepolia.org

remove <chainId>

Remove a network from your project's f9s/networks.yml.

Usage

fever networks remove <chainId>

Argument

Argument	Description
<chainId>	(Required) The chain ID of the network to remove.

Example

fever networks remove 1337

⚠️  Remove network: Localhost (1337)?
? Are you sure? (Y/n) Y
✅ Removed Localhost from project

status

Display the currently active network and a summary of all networks configured for your project.

Usage

fever networks status

Example

$ fever networks status

📊 Network Status

✅ Default Network for Project

Default Network:
   Name: Ethereum Sepolia
   Chain ID: 11155111
   Currency: ETH
   Type: testnet
   RPC: https://rpc.sepolia.org
   Explorer: https://sepolia.etherscan.io
   Added: 10/28/2025, 12:00:00 PM

📁 Configuration File: f9s/networks.yml

Project Networks (2 configured):
   ⭐ Ethereum Sepolia (11155111) - DEFAULT
     Localhost (1337)

💡 Tips:
   • Use 'fever networks use <chainId>' to switch default network
   • Use 'fever networks list --project' to see all project networks
   • Use 'fever networks select' to add more networks