OpenAPI node types

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Redocly CLI uses node types to target custom rules and custom plugins.

The node types naming convention maps to the OpenAPI specification.

This document is for OpenAPI 3.0 and OpenAPI 3.1, which mostly share the same node type tree.

The root of the OpenAPI definition is the Root node type.

For technical details on the implementation of types for each OAS version, consult the source files in the Redocly CLI repository:

• OAS 3.1: https://github.com/Redocly/redocly-cli/blob/main/packages/core/src/types/oas3_1.ts
• OAS 3.0: https://github.com/Redocly/redocly-cli/blob/main/packages/core/src/types/oas3.ts
• OAS 2.0: https://github.com/Redocly/redocly-cli/blob/main/packages/core/src/types/oas2.ts

OpenAPI 3.0 and 3.1 node type tree

• Root
  • openapi (not a node type; openapi is a property of the Root)
  • Info
    • Contact object
    • License object
  • List of Server objects (ServerList)
    • ServerVariables object
  • Paths object
    • PathItem object
      • Operation object
        • List of Parameter objects (ParameterList)
        • MediaTypesMap object is a map of media types and corresponding MediaType objects
          • RequestBody object
          • Responses object
            • Response object
        • XCodeSample list
  • WebhooksMap object
    • PathItem object
  • Components object
    • NamedSchemas map of Schema objects
      • SchemaProperties object
      • Discriminator object
        • DiscriminatorMapping object
      • ExternalDocs object
    • NamedResponses map of Response objects
    • NamedParameters map of Parameter objects
    • NamedExamples map of Example objects
    • NamedRequestBodies map of RequestBody objects
    • NamedHeaders map of Header objects
    • NamedPathItems map of PathItem objects
    • NamedSecuritySchemes map of SecurityScheme objects
      • OAuth2Flows object
        • ImplicitFlow object
        • PasswordFlow object
        • AuthenticationCode object
        • ClientCredentials object
    • NamedLinks map of Link objects
    • NamedCallbacks map of Callback objects
  • SecurityRequirement object
  • List of Tag objects (TagList)
  • ExternalDocs object

Diagrams

The following diagrams are of the most common types and relations.

Root object

Paths object

Operation object

RequestBody object

Responses object

Full diagram

Type discovery

Another method of finding types for any given part of an OpenAPI definition is to use the Redocly VS Code extension.

1. Install the Redocly VS Code extension.
2. Open the OpenAPI definition.
3. Place the cursor on the part of the definition you want to find the type for.
4. Open the "cursor context" and see the type.