Tool Integrations Guide

FreeAIAPIKey.com works seamlessly with your favorite AI tools and frameworks. Just change the base URL to https://freeaiapikey.com/v1 and use your FreeAIAPIKey.

📋 Quick Reference

Tool	Configuration	Difficulty
n8n	Base URL + API Key	⭐ Easy
Claude Desktop	MCP config	⭐ Easy
Claude Code	Environment variables	⭐ Easy
LangChain	`openai_api_base` param	⭐ Easy
Vercel AI SDK	Custom fetch	⭐⭐ Medium
Continue.dev	Config JSON	⭐ Easy
Flowise	Base URL setting	⭐ Easy
Dify	API endpoint config	⭐ Easy
OpenWebUI	Connection settings	⭐ Easy
LibreChat	Custom endpoint	⭐ Easy

🔧 n8n (Workflow Automation)

Setup

Open n8n workflow editor
Add an OpenAI node
Configure credentials:

Base URL: https://freeaiapikey.com/v1
API Key: your-freeaiapikey

Screenshot

[OpenAI Node Configuration]
├─ Resource: Chat Message
├─ Operation: Create
├─ Model: gpt-4 (or claude-opus, gemini-pro, etc.)
├─ Credentials: FreeAIAPIKey
│   ├─ Base URL: https://freeaiapikey.com/v1
│   └─ API Key: sk-xxxxxxxx

Example Workflow

{
  "nodes": [
    {
      "parameters": {
        "model": "gpt-4",
        "options": {},
        "messages": {
          "values": [
            {
              "role": "user",
              "content": "={{ $json.input }}"
            }
          ]
        }
      },
      "id": "ai-chat",
      "name": "AI Chat",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "credentials": {
        "openAiApi": {
          "id": "freeaiapikey",
          "name": "FreeAIAPIKey"
        }
      }
    }
  ]
}

Save: 80-90% on your n8n AI workflow costs!

🤖 Claude Desktop (Anthropic's Desktop App)

Setup with MCP (Model Context Protocol)

Open Claude Desktop settings
Navigate to Developer → Config
Edit claude_desktop_config.json:

{
  "mcpServers": {
    "freeai": {
      "command": "npx",
      "args": ["-y", "@anthropics-ai/mcp-openai"],
      "env": {
        "OPENAI_API_KEY": "your-freeaiapikey",
        "OPENAI_BASE_URL": "https://freeaiapikey.com/v1"
      }
    }
  }
}

Alternative: Direct Configuration

If using a custom OpenAI-compatible endpoint:

{
  "openai": {
    "api_key": "your-freeaiapikey",
    "base_url": "https://freeaiapikey.com/v1",
    "model": "gpt-4"
  }
}

Using Claude Models

To use Claude models through FreeAIAPIKey:

{
  "mcpServers": {
    "freeai-claude": {
      "command": "npx",
      "args": ["-y", "@anthropics-ai/mcp-freeai"],
      "env": {
        "FREEAI_API_KEY": "your-freeaiapikey",
        "FREEAI_BASE_URL": "https://freeaiapikey.com/v1",
        "DEFAULT_MODEL": "claude-opus"
      }
    }
  }
}

💻 Claude Code (CLI Tool)

Environment Setup

Set environment variables before running Claude Code:

# Bash/Zsh
export OPENAI_API_KEY="your-freeaiapikey"
export OPENAI_BASE_URL="https://freeaiapikey.com/v1"

# Then run
claude-code

Configuration File

Create ~/.claude-code/config.json:

{
  "openai": {
    "api_key": "your-freeaiapikey",
    "base_url": "https://freeaiapikey.com/v1",
    "default_model": "gpt-4"
  }
}

Using Different Models

# Use Claude through FreeAIAPIKey
export DEFAULT_MODEL="claude-opus"
claude-code

# Use Gemini
export DEFAULT_MODEL="gemini-pro"
claude-code

🔗 LangChain

Python

from langchain_openai import ChatOpenAI
from langchain_core.messages import HumanMessage

# Configure with FreeAIAPIKey
llm = ChatOpenAI(
    model="gpt-4",  # or "claude-opus", "gemini-pro", etc.
    openai_api_key="your-freeaiapikey",
    openai_api_base="https://freeaiapikey.com/v1",
    temperature=0.7
)

# Use in your chain
messages = [HumanMessage(content="Hello!")]
response = llm.invoke(messages)
print(response.content)

With Streaming

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="gpt-4",
    openai_api_key="your-freeaiapikey",
    openai_api_base="https://freeaiapikey.com/v1",
    streaming=True
)

for chunk in llm.stream("Tell me a joke"):
    print(chunk.content, end="")

JavaScript/TypeScript

import { ChatOpenAI } from '@langchain/openai';

const model = new ChatOpenAI({
  modelName: 'gpt-4',
  openAIApiKey: 'your-freeaiapikey',
  configuration: {
    baseURL: 'https://freeaiapikey.com/v1',
  },
});

const response = await model.invoke('Hello!');
console.log(response.content);

LangChain with Claude

from langchain_openai import ChatOpenAI

claude = ChatOpenAI(
    model="claude-opus",
    openai_api_key="your-freeaiapikey",
    openai_api_base="https://freeaiapikey.com/v1"
)

▲ Vercel AI SDK

Next.js App Router

// app/api/chat/route.ts
import { OpenAIStream, StreamingTextResponse } from 'ai';

export async function POST(req: Request) {
  const { messages } = await req.json();

  const response = await fetch('https://freeaiapikey.com/v1/chat/completions', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${process.env.FREEAI_API_KEY}`,
    },
    body: JSON.stringify({
      model: 'gpt-4',
      messages,
      stream: true,
    }),
  });

  const stream = OpenAIStream(response);
  return new StreamingTextResponse(stream);
}

Environment Variables

# .env.local
FREEAI_API_KEY=your-freeaiapikey

Using AI SDK with Custom Provider

import { OpenAI } from 'ai';

const freeai = new OpenAI({
  apiKey: process.env.FREEAI_API_KEY,
  baseURL: 'https://freeaiapikey.com/v1',
});

export async function generateText(prompt: string) {
  const response = await freeai.chat.completions.create({
    model: 'gpt-4',
    messages: [{ role: 'user', content: prompt }],
  });
  
  return response.choices[0].message.content;
}

🔵 Continue.dev (AI Coding Assistant)

Configuration

Edit ~/.continue/config.json:

{
  "models": [
    {
      "title": "FreeAI GPT-4",
      "provider": "openai",
      "model": "gpt-4",
      "apiKey": "your-freeaiapikey",
      "apiBase": "https://freeaiapikey.com/v1"
    },
    {
      "title": "FreeAI Claude",
      "provider": "openai",
      "model": "claude-opus",
      "apiKey": "your-freeaiapikey",
      "apiBase": "https://freeaiapikey.com/v1"
    },
    {
      "title": "FreeAI Gemini",
      "provider": "openai",
      "model": "gemini-pro",
      "apiKey": "your-freeaiapikey",
      "apiBase": "https://freeaiapikey.com/v1"
    }
  ],
  "tabAutocompleteModel": {
    "title": "FreeAI Sonnet",
    "provider": "openai",
    "model": "claude-sonnet",
    "apiKey": "your-freeaiapikey",
    "apiBase": "https://freeaiapikey.com/v1"
  }
}

VS Code Settings

You can also configure through VS Code settings:

{
  "continue.models": [
    {
      "title": "FreeAI GPT-4",
      "provider": "openai",
      "model": "gpt-4",
      "apiKey": "your-freeaiapikey",
      "apiBase": "https://freeaiapikey.com/v1"
    }
  ]
}

🌊 Flowise (Low-Code LLM Builder)

Setup

Open Flowise canvas
Drag "ChatOpenAI" node
Configure:

Base Path: https://freeaiapikey.com/v1
OpenAI Api Key: your-freeaiapikey
Model Name: gpt-4 (or claude-opus, gemini-pro, etc.)

Screenshot

[ChatOpenAI Node]
├─ Base Path: https://freeaiapikey.com/v1
├─ OpenAI Api Key: sk-xxxxxxxx
├─ Model Name: gpt-4
├─ Temperature: 0.7
└─ Max Tokens: 2000

🎨 Dify (LLM App Development Platform)

Setup

Go to Settings → Model Provider
Select OpenAI-API-compatible
Configure:

Model Name: gpt-4
API Key: your-freeaiapikey
Endpoint URL: https://freeaiapikey.com/v1

For Claude/Gemini Models

Model Name: claude-opus (or gemini-pro, deepseek-chat, etc.)
API Key: your-freeaiapikey
Endpoint URL: https://freeaiapikey.com/v1

💬 OpenWebUI (Self-Hosted Chat Interface)

Admin Configuration

Go to Admin Panel → Settings → Connections
Add OpenAI API connection:

URL: https://freeaiapikey.com/v1
Key: your-freeaiapikey

Enable models:
- gpt-4
- claude-opus
- claude-sonnet
- gemini-pro
- deepseek-chat
- kimi-k2

User Settings

Users can select any enabled model from the dropdown.

🗨️ LibreChat (Open Source ChatGPT Clone)

Configuration

Edit .env file:

# OpenAI (FreeAIAPIKey)
OPENAI_API_KEY=your-freeaiapikey
OPENAI_BASE_URL=https://freeaiapikey.com/v1
OPENAI_MODELS=gpt-4,gpt-3.5-turbo,claude-opus,claude-sonnet,gemini-pro

Or use librechat.yaml:

endpoints:
  openAI:
    name: "FreeAIAPIKey"
    apiKey: "${FREEAI_API_KEY}"
    baseURL: "https://freeaiapikey.com/v1"
    models:
      default: ["gpt-4", "claude-opus", "gemini-pro"]

📊 Comparison: Tool Integration Difficulty

Tool	Time to Setup	Cost Savings
n8n	2 minutes	80-90%
Claude Desktop	5 minutes	85%
Claude Code	2 minutes	85%
LangChain	3 minutes	80-90%
Vercel AI SDK	5 minutes	80-90%
Continue.dev	3 minutes	80-90%
Flowise	2 minutes	80-90%
Dify	3 minutes	80-90%
OpenWebUI	5 minutes	80-90%
LibreChat	3 minutes	80-90%

🛠️ Custom Integrations

Generic OpenAI-Compatible Setup

Any tool that supports OpenAI API format:

Base URL: https://freeaiapikey.com/v1
API Key: your-freeaiapikey
Model: gpt-4 (or any supported model)

Testing Your Integration

# Test with curl
curl https://freeaiapikey.com/v1/chat/completions \
  -H "Authorization: Bearer your-freeaiapikey" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

💡 Pro Tips

1. Model Selection

Use GPT-4 for: General tasks, reasoning
Use Claude Opus for: Complex analysis, coding
Use Claude Sonnet for: Fast responses, cost-efficiency
Use Gemini for: Multimodal tasks, long context
Use DeepSeek for: Code generation
Use Kimi for: Long documents

2. Cost Optimization

- Start with cheaper models (Sonnet, Gemini) for testing
- Use expensive models (Opus, GPT-4) for production
- Enable streaming for better UX
- Set token limits in your tools

3. Switching Models

Most tools let you change models instantly:

Model: gpt-4 → claude-opus → gemini-pro
Same API key, same base URL, just change model name!

🆘 Troubleshooting

Common Issues

"Invalid API key"

Check your key at https://freeaiapikey.com/dashboard
Ensure no extra spaces
Verify key is active

"Model not found"

Use exact model names: gpt-4, claude-opus, gemini-pro
Check available models: https://freeaiapikey.com/v1/models

"Connection refused"

Verify base URL: https://freeaiapikey.com/v1
Check internet connection
Try with curl first

"Rate limit exceeded"

FreeAIAPIKey has no rate limits
Check if your tool has internal limits
Contact support if issues persist

📝 Need Help?

🌐 Website: https://freeaiapikey.com
💬 GitHub Issues: Open an issue on this repo

Ready to integrate? Get your API key at https://freeaiapikey.com 🚀

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Tool Integrations Guide

📋 Quick Reference

🔧 n8n (Workflow Automation)

Setup

Screenshot

Example Workflow

🤖 Claude Desktop (Anthropic's Desktop App)

Setup with MCP (Model Context Protocol)

Alternative: Direct Configuration

Using Claude Models

💻 Claude Code (CLI Tool)

Environment Setup

Configuration File

Using Different Models

🔗 LangChain

Python

With Streaming

JavaScript/TypeScript

LangChain with Claude

▲ Vercel AI SDK

Next.js App Router

Environment Variables

Using AI SDK with Custom Provider

🔵 Continue.dev (AI Coding Assistant)

Configuration

VS Code Settings

🌊 Flowise (Low-Code LLM Builder)

Setup

Screenshot

🎨 Dify (LLM App Development Platform)

Setup

For Claude/Gemini Models

💬 OpenWebUI (Self-Hosted Chat Interface)

Admin Configuration

User Settings

🗨️ LibreChat (Open Source ChatGPT Clone)

Configuration

📊 Comparison: Tool Integration Difficulty

🛠️ Custom Integrations

Generic OpenAI-Compatible Setup

Testing Your Integration

💡 Pro Tips

1. Model Selection

2. Cost Optimization

3. Switching Models

🆘 Troubleshooting

Common Issues

📝 Need Help?