Fix Cursor and VSCode Unable to Use Third-Party Endpoints ​

0. Claude Code Install - Complete guide for Claude Code CLI installation and environment variable configuration
1. Create ~/.claude/config.json (if it already exists, just edit it)
2. Add the following content: (XXX can remain unchanged or you can change it to your service name or your key)

json

{
    "primaryApiKey":"xxx"
}

3. Restart VSCode and Cursor

Below are alternative testing solutions. If the above step works, you can skip this. ​

Use Claude Code CLI (Recommended) ​

Claude Code CLI is the most flexible solution with full support for custom API endpoints.

Step 1: Install Claude Code CLI ​

bash

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

Step 2: Configure Environment Variables ​

macOS / Linux:

Edit ~/.zshrc or ~/.bashrc:

bash

# Add the following configuration
export ANTHROPIC_AUTH_TOKEN="your-auth-token"
export ANTHROPIC_BASE_URL="third-party-endpoint-url"

Reload configuration:

bash

source ~/.zshrc  # or source ~/.bashrc

Windows:

Using PowerShell (Administrator):

powershell

[System.Environment]::SetEnvironmentVariable('ANTHROPIC_AUTH_TOKEN', 'your-auth-token', 'User')
[System.Environment]::SetEnvironmentVariable('ANTHROPIC_BASE_URL', 'third-party-endpoint-url', 'User')

Environment Variables Explanation

• ANTHROPIC_AUTH_TOKEN: Your API authentication token (format: cr_...)
• ANTHROPIC_BASE_URL: Complete URL of the third-party endpoint

Step 3: Verify Configuration ​

bash

cd ~/your-project
claude hello

If configured correctly, Claude should respond normally.

Logging and Debugging ​

Enable verbose logging for troubleshooting:

bash

# Enable Claude Code CLI verbose logging
export DEBUG=claude:*
claude hello

# Or use --verbose flag
claude --verbose hello

Related Resources ​

• Claude Code Install - Complete CLI installation guide
• Opcode Guide - Desktop client usage
• Claude Code Complete Guide - Comprehensive feature introduction
• Setting Environment Variables in Windows - Windows configuration details

Summary ​

The key to solving VSCode and Cursor's inability to use third-party endpoints:

1. ✅ Prioritize Claude Code CLI , which provides the most complete custom endpoint support
2. ✅ Configure environment variables correctly , including ANTHROPIC_AUTH_TOKEN and ANTHROPIC_BASE_URL

If you encounter problems during configuration, feel free to check our other tutorials or contact technical support.

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