OpenAPI is a machine-readable specification for describing HTTP APIs, including their endpoints, operations, parameters, and representations.
OpenAPI is a machine-readable specification for describing HTTP APIs. Swagger is its predecessor and remains a familiar name through Swagger UI, a browser-based interface for testing API operations. section 5.5
Use OpenAPI tooling to expose and exercise an ASP.NET Core API:
Add the Swashbuckle.AspNetCore package to generate OpenAPI documents and expose Swagger UI. section 5.5
Select an operation, choose Try It Out, provide parameters, and inspect the response. section 5.5
Use the interface to test non-GET operations such as POST, PATCH, and DELETE. section 5.5
How .NET in Action, Second Edition covers it
How deep it goes
Explains terminology and configures document generation and UI exposure, but does not descend into the OpenAPI specification format.
Examples
Uses Catalog API GET, POST, PATCH, and DELETE operations as interactive testing examples.
What it assumes
Assumes an ASP.NET Core HTTP API with controllers and endpoints, while introducing Swagger/OpenAPI terminology and setup.
What you can do after
Operate/configure it through Swashbuckle and Swagger UI to generate API documentation and send test requests.
How it connects
Connects OpenAPI with Swagger, Swagger UI, Swashbuckle, ASP.NET Core, HTTP verbs, and API controllers.
Automating API DeliveryThe OpenAPI Specification is a standard machine-readable format for describing HTTP APIs, including their operations, inputs, and responses.
The Design of Web APIs, Second EditionOpenAPI 3.1 is a version of the OpenAPI standard that adds support for a more recent JSON Schema version and webhooks.
ASP.NET Core in Action, 3eAn OpenAPI document is a structured document that describes an HTTP API's available URLs, operations, parameters, and data types according to the OpenAPI standard.
Secure APIsOpenAPI is a standard format for describing HTTP APIs, including their operations, parameters, request bodies, responses, and security requirements.
Building Web APIs with ASP.NET CoreThe OpenAPI specification is a machine-readable standard for describing HTTP APIs, including their operations, inputs, and outputs.
LLMs in ProductionOpenAPI is a specification standard for describing HTTP APIs so that their operations, inputs, outputs, and security requirements can be understood by tools and clients.
AI Agents in ActionAn OpenAPI specification is a machine-readable standard description of an HTTP API's endpoints, operations, parameters, and data structures.
Software Testing with Generative AIOpenAPI is a standard for describing HTTP APIs and their operations, data structures, and constraints in a machine-readable format.
Spectralused by · Spectral is an open-source linter that applies configurable rules to JSON, YAML, and structured API description documents.
api lintingused by · API linting is the automated analysis of an API description or design against rules for correctness, consistency, security, and maintainability.
JSON Schemauses · JSON Schema is a standard vocabulary and specification for describing, validating, and annotating the structure and constraints of JSON data.
spreadsheetcontrasts with · A spreadsheet is a grid-based document or application that organizes data in cells arranged by rows and columns and supports calculations.
provider-driven contract testingused by · Provider-driven contract testing is a contract-testing workflow in which the provider determines or contributes the contract expectations and compares them with consumer expectations.
This explainer was generated by Manning's knowledge graph from the text of .NET in Action, Second Edition. The section links point to the parts of the book it draws on.
