API Documentation

Quick integration with Claude API platform, compatible with OpenAI format

Prerequisites

Before getting started, please ensure you have the following tools installed:

1. Install Node.js

Node.js is required to run Claude Code.

Visit Node.js official website
Download the LTS (Long Term Support) version (recommended)
Run the installer and follow the prompts to complete installation
After installation, open Terminal (Windows users: Command Prompt or PowerShell), enter the following command to verify:
node --version
If it displays a version number (e.g., v20.x.x), the installation was successful

2. Install VS Code (Optional but Recommended)

VS Code is a powerful code editor that makes using Claude Code more convenient.

Visit VS Code official website
Download the version for your operating system
Run the installer and follow the prompts to complete installation
When opening VS Code for the first time, you can choose a language pack if needed

3. Install Claude Code

There are two installation methods, choose one:

Method 1: Install via npm (Command Line Version)

Execute in terminal:

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

After installation, type claude --version in terminal to verify successful installation.

Method 2: Install Extension in VS Code (Recommended)

Open VS Code
Click the Extensions icon in the left sidebar (or press Ctrl+Shift+X / Cmd+Shift+X)
Type "Claude Code" in the search box
Find the official Claude Code extension published by Anthropic
Click the "Install" button
After installation, the Claude icon will appear in the left sidebar

💡 Tip: The VS Code extension version provides a more user-friendly graphical interface, suitable for beginners. The command line version is better suited for advanced users and automation scenarios.

Quick Start

Step 1: Create API Key

Log in to the Dashboard
Go to API Keys page
Click the "Create API Key" button
Enter a key name (e.g., My Claude Code)
Optional configuration:
- Allowed models whitelist (leave empty for no restrictions)
- Max tokens per request (leave empty for no limit)
- Expiration time (leave empty for never expires)
After clicking "Create", immediately copy and save the complete API Key

⚠️ Important: The API Key will only be displayed once. After closing the dialog, you cannot view it again. If lost, you'll need to create a new one.

Step 2: Configure Claude Code

There are two configuration methods, choose one:

Method 1: Command Line Configuration (Recommended)

Execute the following commands in terminal:

# Configure API URL

claude config set -g api-url https://www.agentstashlab.com/api

# Configure API Key (replace YOUR_API_KEY with your actual key)

claude config set -g api-key YOUR_API_KEY

Tip: The -g parameter means global configuration, all projects will use this config. To configure only for the current project, remove the -g parameter.

Method 2: Using cc-switch Tool

If you need to quickly switch between multiple API providers, we recommend using the cc-switch tool.

1. Download cc-switch

Download the latest cc-switch.exe file from GitHub Releases.

It's recommended to place cc-switch.exe in your system PATH for easy access from anywhere.

2. Add Platform Configuration

Double-click to run cc-switch.exe, select "Add Configuration":

Click the plus icon to create a new configuration

Enter configuration name (e.g., agentstashlab), API URL and API Key

Configuration Example:

Configuration Name: agentstashlab
API URL: https://www.agentstashlab.com/api
API Key: sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

3. Switch to This Platform

Select agentstashlab from the configuration list and click the "Switch" button:

After successful switch, the current configuration will be shown as active

After switching successfully, Claude Code will automatically use this platform's configuration.

4. Verify Current Configuration

You can see the currently active configuration information on the main interface:

Shows the currently used API URL and key prefix

Step 3: Verify Configuration

After configuration, test in terminal:

claude "Hello, Claude!"

If configured correctly, Claude will respond normally. You can also check request records on the Usage Details page.

Error Codes

HTTP Status	Error Code	Description
401	`INVALID_API_KEY`	API Key is invalid or has been deleted
401	`KEY_EXPIRED`	API Key has expired
402	`INSUFFICIENT_BALANCE`	Insufficient account balance, please recharge
400	`MODEL_NOT_ALLOWED`	This key is not authorized to use this model
503	`ALL_PROVIDERS_DOWN`	All upstream providers are unavailable

Frequently Asked Questions

Q: I'm a complete beginner, where should I start?

We recommend following this order:
1. Install Node.js (required)
2. Install VS Code (recommended)
3. Install Claude Code extension in VS Code
4. Register an account on this platform and add funds
5. Create an API Key
6. Configure Claude Code according to the documentation
7. Start using

Q: I don't know how to open Terminal/Command Line?

Windows users: Press Win + R, type cmd or powershell, press Enter.
Mac users: Press Cmd + Space, type Terminal, press Enter.
VS Code users: Press Ctrl + ` (backtick) in VS Code to open the integrated terminal.

Q: Getting "command not found" when running claude command?

This means Claude Code is not properly installed or not added to system PATH. Try:
1. Re-run the installation command: npm install -g @anthropic-ai/claude-code
2. Close and reopen your terminal
3. If it still doesn't work, we recommend using the VS Code extension version

Q: Getting "insufficient balance" error after configuration?

Please go to the Billing page to add funds to your account. This platform charges based on actual usage, we recommend starting with a small amount for testing.

Q: Can I use the same API Key on multiple computers?

Yes. One API Key can be used on multiple devices, but please keep your key secure and don't share it with others.

Q: How can I view my usage and costs?

After logging in, visit the Usage Details page to view detailed information and costs for each request.