JSON is a text-based format that organizes data using pairs of keys and values. It supports basic data types such as strings, numbers, booleans, arrays, and objects. Because it uses a simple and predictable structure, JSON has become the standard format for data exchange across web services, mobile apps, and APIs.
Most modern programming languages can easily read and generate JSON, making it a universal choice for sending structured information over the internet. APIs often return data in JSON because the format loads quickly, compresses well, and integrates smoothly with frontend and backend systems.
JSON is also commonly used for configuration files, logging formats, application settings, and structured storage in NoSQL databases. Its simplicity allows developers to maintain clear and consistent data models without complex encoding rules.
JSON is central to modern software communication. It allows APIs, applications, and systems to exchange data efficiently, making integrations faster, cleaner, and easier to maintain.
JSON is simpler, smaller, and faster to parse than XML. It is now preferred for most APIs because it produces cleaner structures and integrates easily with modern programming languages and web technologies.
Typical mistakes include missing commas, incorrect brackets, invalid character encoding, and using unsupported data types. These errors can cause APIs to reject a request or applications to fail when parsing the data.
APIs use JSON to return structured data such as prices, user information, settings, or search results. Each key-value pair represents a specific piece of information that developers can access and process in their applications.
FinFeedAPI returns data in clean, well-structured JSON across all products, including the Stock API, Currencies API, SEC API, and Prediction Market API. Developers rely on these JSON responses to build dashboards, automate workflows, and integrate market data into their applications quickly and reliably.
