Using FishXCode with Claude Code

Install Claude Code

Install the Claude Code CLI globally using your preferred package manager:

pnpm

pnpm install -g @anthropic-ai/claude-code

npm

npm install -g @anthropic-ai/claude-code

yarn

yarn global add @anthropic-ai/claude-code

bunx

bunx --global @anthropic-ai/claude-code

Configure Environment Variables

Set up your terminal environment variables to connect with FishXCode's API service.

Linux/macOS

export ANTHROPIC_BASE_URL=https://fishxcode.com/
export ANTHROPIC_AUTH_TOKEN=sk-xxx
export ANTHROPIC_API_KEY=sk-xxx

Windows PowerShell

$env:ANTHROPIC_BASE_URL="https://fishxcode.com/"
$env:ANTHROPIC_AUTH_TOKEN="sk-xxx"
$env:ANTHROPIC_API_KEY="sk-xxx"

Windows CMD

set ANTHROPIC_BASE_URL=https://fishxcode.com/
set ANTHROPIC_AUTH_TOKEN=sk-xxx
set ANTHROPIC_API_KEY=sk-xxx

Important

Replace sk-xxx with your actual token from the FishXCode Console.

Launch Directly

After configuring variables, navigate to your project and launch Claude Code:

cd my-project
claude

Model Selection

Control which Claude model Claude Code uses through environment variables:

Variable	Description
ANTHROPIC_MODEL	Primary model for Claude Code
ANTHROPIC_SMALL_FAST_MODEL	Fast model for lightweight operations (deprecated)

Recommended Models

• claude-sonnet-4-5-20250929
• claude-sonnet-4-5-20250514
• claude-haiku-4-5-20251001
• claude-3-5-haiku-20241022

Configuration Example

Linux/macOS

export ANTHROPIC_MODEL=claude-sonnet-4-5-20250929
export ANTHROPIC_SMALL_FAST_MODEL=claude-3-5-haiku-20241022
claude

Windows PowerShell

$env:ANTHROPIC_MODEL = "claude-sonnet-4-5-20250929"
$env:ANTHROPIC_SMALL_FAST_MODEL = "claude-3-5-haiku-20241022"
claude

Persistent Configuration

Add environment variables to your shell configuration file to avoid manual setup each session:

• Linux/macOS: Add to ~/.bashrc or ~/.zshrc
• Windows PowerShell: Add to $PROFILE