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Claude Code Setup Guide

Complete guide to using CherryIN API with Claude Code

What is Claude Code?

Claude Code is Anthropic's official command-line AI coding assistant. It helps you write code, debug issues, and execute commands directly in your terminal.

By configuring the CherryIN API, you can use our Claude model services within Claude Code.

Before You Begin

Please ensure you have:

  1. Completed the steps in Getting Started to obtain your API Key
  2. Installed Claude Code

Configuration Steps

Set Environment Variables

Choose the configuration method based on your operating system and shell:

Edit the ~/.zshrc file:

nano ~/.zshrc

Add the following content at the end of the file:

# CherryIN API Configuration
export ANTHROPIC_BASE_URL='https://open.cherryin.cc'
export ANTHROPIC_AUTH_TOKEN='sk-xxxxx'  # Replace with your API Key

# Model Configuration (optional, for setting default models)
export ANTHROPIC_DEFAULT_OPUS_MODEL='anthropic/claude-sonnet-4.5'
export ANTHROPIC_DEFAULT_SONNET_MODEL='anthropic/claude-sonnet-4.5'
export ANTHROPIC_DEFAULT_HAIKU_MODEL='anthropic/claude-haiku-4.5'
export CLAUDE_CODE_SUBAGENT_MODEL='anthropic/claude-sonnet-4.5'

After saving, run the following command to apply the configuration:

source ~/.zshrc

Edit the ~/.bashrc file:

nano ~/.bashrc

Add the following content at the end of the file:

# CherryIN API Configuration
export ANTHROPIC_BASE_URL='https://open.cherryin.cc'
export ANTHROPIC_AUTH_TOKEN='sk-xxxxx'  # Replace with your API Key

# Model Configuration (optional, for setting default models)
export ANTHROPIC_DEFAULT_OPUS_MODEL='anthropic/claude-sonnet-4.5'
export ANTHROPIC_DEFAULT_SONNET_MODEL='anthropic/claude-sonnet-4.5'
export ANTHROPIC_DEFAULT_HAIKU_MODEL='anthropic/claude-haiku-4.5'
export CLAUDE_CODE_SUBAGENT_MODEL='anthropic/claude-sonnet-4.5'

After saving, run the following command to apply the configuration:

source ~/.bashrc

Open PowerShell as Administrator and run the following commands:

# CherryIN API Configuration
[Environment]::SetEnvironmentVariable("ANTHROPIC_BASE_URL", "https://open.cherryin.cc", "User")
[Environment]::SetEnvironmentVariable("ANTHROPIC_AUTH_TOKEN", "sk-xxxxx", "User")  # Replace with your API Key

# Model Configuration (optional, for setting default models)
[Environment]::SetEnvironmentVariable("ANTHROPIC_DEFAULT_OPUS_MODEL", "anthropic/claude-sonnet-4.5", "User")
[Environment]::SetEnvironmentVariable("ANTHROPIC_DEFAULT_SONNET_MODEL", "anthropic/claude-sonnet-4.5", "User")
[Environment]::SetEnvironmentVariable("ANTHROPIC_DEFAULT_HAIKU_MODEL", "anthropic/claude-haiku-4.5", "User")
[Environment]::SetEnvironmentVariable("CLAUDE_CODE_SUBAGENT_MODEL", "anthropic/claude-sonnet-4.5", "User")

After configuration, open a new PowerShell window for the changes to take effect.

Replace Your API Key

Please replace sk-xxxxx with your actual API Key obtained from the CherryIN console.

Restart Claude Code

After setting the environment variables, you need to completely exit and restart Claude Code for the new configuration to take effect.

# Start Claude Code
claude

Verify Configuration

After starting Claude Code, you can verify the configuration by:

  1. Using the /model command to check the current model
  2. Sending a test message to see if it responds correctly

Model ID Format

CherryIN model names follow the format vendor/model-name, e.g., anthropic/claude-sonnet-4.5. When using the /model command, enter the complete model ID.

Switching Models

In Claude Code, you can use the /model command to switch between different models:

/model anthropic/claude-sonnet-4.5

Model switching example

Available Models

Model IDDescription
anthropic/claude-opus-4Claude Opus 4, most powerful model
anthropic/claude-sonnet-4.5Claude Sonnet 4.5, balanced performance and cost
anthropic/claude-haiku-4.5Claude Haiku 4.5, fast responses

View More Models

Log in to the CherryIN Console to see all available Claude models.

Environment Variables Reference

Environment VariableRequiredDescription
ANTHROPIC_BASE_URLYesCherryIN API endpoint
ANTHROPIC_AUTH_TOKENYesYour API Key
ANTHROPIC_DEFAULT_OPUS_MODELNoDefault Opus model
ANTHROPIC_DEFAULT_SONNET_MODELNoDefault Sonnet model
ANTHROPIC_DEFAULT_HAIKU_MODELNoDefault Haiku model
CLAUDE_CODE_SUBAGENT_MODELNoModel used by sub-agents

FAQ

Configuration not working?

  1. Verify environment variables are set: Run echo $ANTHROPIC_BASE_URL to check if it's correctly configured
  2. Fully restart Claude Code: Make sure to close all Claude Code processes before restarting
  3. Check API Key: Confirm your API Key is correct and your account has sufficient balance

Error: Authentication failed

Cause: Invalid API Key or incorrect configuration

Solution:

  1. Check if the ANTHROPIC_AUTH_TOKEN environment variable is correctly set
  2. Confirm there are no extra spaces or newlines in the API Key
  3. Verify the API Key is valid in the console

How to temporarily use a different API Key?

You can specify environment variables when starting Claude Code:

ANTHROPIC_AUTH_TOKEN='sk-your-other-key' claude

Next Steps

  • Check the Code Tutorial for more API usage examples
  • Visit the FAQ for more help

Code Tutorial

Step-by-step guide to calling the CherryIN API with code

OpenClaw Setup Guide

Complete beginner's guide to using CherryIN API with OpenClaw

On this page

What is Claude Code?Configuration StepsSet Environment VariablesRestart Claude CodeVerify ConfigurationSwitching ModelsAvailable ModelsEnvironment Variables ReferenceFAQConfiguration not working?Error: Authentication failedHow to temporarily use a different API Key?Next Steps