Claude Code FAQ

Common questions about using Claude Code with Fizzly API.

Setup

How do I configure Claude Code with Fizzly API?

Set two environment variables:

$env:ANTHROPIC_API_KEY = "your-fizzly-api-key"
$env:ANTHROPIC_BASE_URL = "https://api.fizzlyapi.com"

export ANTHROPIC_API_KEY="your-fizzly-api-key"
export ANTHROPIC_BASE_URL="https://api.fizzlyapi.com"

See detailed guides: Windows | macOS | Linux

Which models can I use?

All Anthropic Claude models are supported. See Claude Code Models.

What is Thinking mode?

Thinking mode enables extended reasoning for complex tasks. Use claude-3-7-sonnet-thinking to activate it.

Troubleshooting

”ANTHROPIC_API_KEY not set” error

Cause: Environment variables are not configured correctly.

Solution:

1. Verify variables are set: echo $ANTHROPIC_API_KEY
2. Check shell config file (.bashrc, .zshrc, etc.)
3. Re-source the config: source ~/.bashrc

Connection timeout

1. Check your internet connection
2. Verify the API URL: https://api.fizzlyapi.com
3. Check if firewall is blocking the connection
4. Try disabling VPN if using one

Authentication failed (401)

1. Verify your API key in the Fizzly Console
2. Ensure the key has not been deleted or disabled
3. Copy and paste the key again (watch for extra spaces)

Insufficient balance (403)

1. Check your balance in the Dashboard
2. Top up your account in Billing → Top Up