What is an API? - Definition & Meaning
An API (Application Programming Interface) is a set of rules that allows software systems to communicate with each other. Learn what an API is and how it works.
Definition
An API (Application Programming Interface) is a standardized interface that allows different software systems to communicate with each other. APIs define what requests a system can receive, what data it returns, and in what format, enabling developers to connect applications together.
Technical Explanation
APIs are typically implemented as REST (Representational State Transfer) or GraphQL endpoints communicating over HTTP/HTTPS. REST APIs use standard HTTP methods (GET, POST, PUT, DELETE) and return data in JSON or XML format. Authentication is handled via API keys, OAuth 2.0 tokens, or JWTs. Rate limiting protects the server from overload. API documentation is often auto-generated via OpenAPI/Swagger specifications. Modern APIs also offer webhooks for event-driven communication and support pagination for large datasets.
How Refront Uses This
Refront provides a comprehensive REST API that allows clients to programmatically access their workflow data. The API enables managing tickets, querying time entries, and generating invoices from external systems. Integrations with GitHub, Slack, Azure DevOps, and Stripe are entirely built on API connections.
Examples
- •A developer uses the Refront API to automatically create tickets from a CI/CD pipeline when a build fails.
- •An agency connects their existing CRM to Refront via the API to synchronize client data.
- •The Stripe API is used to automatically process payments when an invoice is sent through Refront.
Related Terms
Frequently Asked Questions
What is the difference between an API and a webhook?
An API requires the client to actively send a request (pull model), while a webhook automatically sends data to a pre-configured URL when an event occurs (push model).
What is a REST API?
A REST API follows the REST architectural style, where resources are accessed via standard HTTP methods and data is exchanged in a standardized format such as JSON.
Do I need programming knowledge to use an API?
Direct API integrations require basic programming knowledge. However, many SaaS platforms like Refront offer no-code connectors and pre-built integrations so non-technical users can benefit as well.
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