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What makes Kreya a good Swagger UI alternative for API testing

Swagger UI is a tool for visualizing and interacting with REST APIs. It is also often used to quickly test APIs.

Here is why Kreya is a good Swagger UI alternative and why you should consider switching from Swagger UI to Kreya for API testing.

Kreya vs Swagger UI comparison: What are the differences?


Feature / topicSwagger UIKreya
Suited for testing APIs()
Suited for documenting APIs()
Works with OpenAPI
gRPC support
Environments and templating
Directory settings
Reusing authentication()
Directory settings
Free plan

Testing tool

Swagger UI is a wonderful tool to explore and document REST APIs. It is also often used to quickly test APIs. However, Swagger UI is not made to often and repeatedly test the same API.

Kreya is much better suited for that, as it allows to store the test data, share common values such as headers between requests and more.

No gRPC support

As Swagger UI is specific to REST, other protocols such as gRPC cannot be tested with Swagger UI.

Environments and templating

Switching between different environments is a core feature of most popular API testing clients. However, Swagger UI does not support this feature. This makes testing different environments of the same API (for example Test and Production) difficult.

Kreya does support environments. In combination with the powerful templating language Scriban, this makes switching between testing different environments very easy.

Directory settings

A feature that makes Kreya a joy to use are the directory settings. It allows users to specify default settings for multiple operations in a folder or the whole project. For example, if all operations in a project use the same host or the same authentication configuration, it only needs to be specified once. This even supports templating and environment specific values, so switching between environments works flawlessly after the initial configuration. Swagger UI does not have a comparable feature.