Free developer tool
HTTP Status Code Lookup
Quickly find HTTP response status codes, understand what they mean, and explore common API scenarios. Search by code, name, or category.
✓ Searchable reference✓ 5 status categoriesNo server requests
What are HTTP status codes?
HTTP status codes are three-digit response codes that tell a client whether a request succeeded, needs further action, or encountered an error.
Client errors vs. server errors
4xx codes indicate a client-side request problem, while 5xx codes indicate that a server failed to fulfill an apparently valid request. The exact cause depends on the application and response details.