APIs Available
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Uptime
Why APIOnion
Everything you need to build at scale
One platform to discover, integrate, and manage all the APIs your applications need.
Instant API Access
Get up and running in minutes with our streamlined onboarding. No complex setup required.
Enterprise Security
SOC 2 compliant with end-to-end encryption, IP whitelisting, and advanced access controls.
Real-time Analytics
Monitor API usage, response times, and error rates with our comprehensive dashboard.
Pay-as-you-go
Only pay for what you use. No upfront commitments with transparent per-request pricing.
World-class Docs
Interactive documentation with code examples in 8+ languages and live API playground.
99.99% Uptime SLA
Built on globally distributed infrastructure with automatic failover and redundancy.
Categories
Browse by category
Explore APIs across every domain and use case.
Games & Sportsbook
84 APIs
Machine Learning & AI Intelligence
172 APIs
Social Media Bots & Dating Bots
63 APIs
Payments & Finance
121 APIs
Security & Anti-Detection Proxy
77 APIs
AI & Machine Learning
156 APIs
Payment Processing
89 APIs
Data & Analytics
124 APIs
Communication
67 APIs
Maps & Location
45 APIs
Weather
23 APIs
Finance
98 APIs
Social Media
54 APIs
Authentication
31 APIs
Storage & Files
42 APIs
Popular APIs
Most loved by developers
Battle-tested APIs trusted by thousands of production applications.
How It Works
Get started in three simple steps
Create Your Account
Sign up in seconds with your email or social account. No credit card required to get started.
Choose Your APIs
Browse our marketplace, test endpoints in the playground, and subscribe to the APIs you need.
Integrate & Deploy
Copy ready-made code snippets, use our SDKs, and start making API calls in production.
Integration
Integrate in minutes, not days
Copy-paste ready code snippets in your favorite language. Our SDKs handle authentication, retries, and error handling so you can focus on building your product.
- Auto-generated SDKs in 8+ languages
- Built-in retry logic and error handling
- Type-safe clients with full IntelliSense
const response = await fetch(
"https://api.apionion.dev/v1/ai/completions",
{
method: "POST",
headers: {
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "gpt-4",
prompt: "Explain quantum computing",
max_tokens: 256,
}),
}
);
const data = await response.json();
console.log(data.choices[0].text);Testimonials
Loved by developers everywhere
"APIOnion transformed our development workflow. We integrated 5 APIs in a single afternoon that would have taken weeks to evaluate and set up individually."
Sarah Chen
CTO at NexaTech
"The documentation quality and interactive playground are unmatched. Best API marketplace I've used in my 12 years of development."
Marcus Johnson
Lead Developer at BuildStack
"Consolidated our API spending by 40% after switching to APIOnion. The analytics dashboard alone is worth the subscription."
Elena Rodriguez
VP of Engineering at DataStream