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API Key Validator Online
Test and validate API keys for OpenAI, Anthropic, Google AI, and other services. Secure validation without storing keys on our servers.
api key
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openai
anthropic
google ai
authentication
testing
API Key Validator
Test 17+ services instantly
Select Service
Select a Service
Choose from 17+ supported API services to get started
Free API Key Validator – Instantly Test 17+ Services
Quickly check if your API key works for services like OpenAI, Anthropic, Google AI, and more — no sign-up, no data stored.
Why Use It?
- ✅ Supports 17+ APIs: OpenAI, Claude, Gemini, Azure, and more
- ⚡ Real-Time Results: See instant feedback and errors
- 🔒 Fully Private: Keys never stored or logged
- 📊 Get Insights: View usage, permissions, and limits
- 💯 Always Free: No account needed
Supported APIs
Includes AI (OpenAI, Claude, Gemini), dev tools (GitHub, Hugging Face), and more.
How It Works
- Pick a service
- Paste your API key
- Get instant results
Top Features
- 🔐 Secure: HTTPS, no logs
- ⚙️ Fast: Real-time validation + diagnostics
- 🌍 Wide Support: 17+ APIs and growing
Use Cases
- Test before using in code
- Debug auth issues
- Audit and rotate keys
Security Tips
- Rotate keys often
- Store keys in env vars
- Use minimal permissions
🔐 Your Keys Stay Safe
All keys are validated securely in your browser. Nothing is stored or sent to our servers.
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