A comprehensive repository of API documentation covering various frameworks and platforms.

About

NotableAPIs is a curated collection of API documentation organized by pricing model, functionality, and provider. The repository serves as a reference for developers looking to discover, understand, and integrate APIs into their projects.

Directory Structure

Directory	Contents
apis	APIs by pricing model (free, freemium, paid)
by-provider	APIs by provider (OpenAI, Microsoft, etc.)
categories	APIs by functionality (Finance, AI, etc.)
docs	Documentation templates and guides

Detailed structure

NotableAPIs/
│
├── apis/
│   ├── free/                  # Completely free APIs
│   ├── freemium/              # APIs with free and paid tiers
│   ├── paid/                  # APIs requiring payment
│   └── tools_and_platforms/   # API development tools
│
├── by-provider/               # APIs organized by provider
│   ├── anthropic/
│   ├── microsoft/
│   ├── openai/
│   └── stripe/
│
├── categories/                # APIs grouped by functionality
│   ├── api-marketplaces/
│   ├── financial/
│   └── microservices/
│
└── docs/                      # Documentation and resources
    ├── security/
    ├── templates/
    └── api-trends-2024-2025.md

Featured APIs

Category	API	Description
AI & ML	OpenAI GPT-4o	Multimodal capabilities with text, image, and audio
	Anthropic Claude 3.5	Advanced reasoning and document processing
	Azure OpenAI	Enterprise-grade AI with Azure integration
Financial	Stripe API	Comprehensive payment processing

API Trends (2024-2025)

60% Annual Increase in API Calls

72% Using Microservices

85% Prioritizing API Security

3× Growth in AI-Powered APIs

Key trends in the evolving API landscape:

• AI-Powered APIs: Enhanced capabilities for reasoning and document processing
• Microservices Architecture: Specialized components for targeted business functions
• API Marketplaces: Centralized platforms for discovery and integration
• Security Enhancements: Advanced protection and compliance features
• Intelligent Integration: AI-powered automation for complex workflows

More about API trends →

Documentation Format

Each API is documented following a standardized format:

api-name/
├── README.md           # Overview and basic information
├── authentication.md   # Authentication details
├── endpoints.md        # Available endpoints
├── examples/           # Usage examples
└── limitations.md      # Restrictions and limits

Contributing

We welcome contributions to this repository. See our contribution guidelines for details.

License

This repository is licensed under the MIT License.

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