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A set of policies for Open Policy Agent to validate OpenAPI definitions.

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spego

bundle

A set of policies for Open Policy Agent to validate OpenAPI definitions.

  • Use opa eval to execute policies against OpenAPI documents
  • Built-in support for Conftest
  • Based on the rules used by Spectral.

Usage

Spego may be used as an Open Policy Agent (OPA) bundle. First, be sure to follow the instructions to install OPA.

git clone [email protected]:kevinswiber/spego.git
opa eval \
  --bundle ./spego/src \
  --format pretty \
  --input ./spego/example/inputs/openapi.json \
  "data.openapi.main.results"

Spego can also be used with Conftest. First, be sure to follow the instructions to download Conftest.

conftest pull git::https://github.com/kevinswiber/spego//src
conftest test -n "openapi.main" ./openapi.json

Note: Policy execution can be configured by adding a data file named data.openapi.ruleset as defined in the Configuration section.

Configuration

Example configuration

openapi:
  ruleset:
    extends: [['spego:oas', 'recommended']]
    rules:
      operation-success-response: error
      openapi-tags: true

Policies (Rules)

contact-properties

Contact object must have "name", "url" and "email".

duplicated-entry-in-enum

Recommended: true

Enum values must not have duplicate entry.

info-contact

Recommended: true

Info object must have "contact" object.

info-description

Recommended: true

Info "description" must be present and non-empty string.

info-license

Info object must have "license" object.

license-url

License object must include "url".

no-eval-in-markdown

Recommended: true

Markdown descriptions must not have "eval(".

no-script-tags-in-markdown

Recommended: true

Markdown descriptions must not have "<script>" tags.

openapi-tags-uniqueness

Recommended: true

Each tag must have a unique name.

openapi-tags

OpenAPI object must have non-empty "tags" array.

operation-description

Recommended: true

Operation "description" must be present and non-empty string.

operation-operationId-unique

Recommended: true

Every operation must have unique "operationId".

operation-operationId-valid-in-url

Recommended: true

operationId must not have characters that are invalid when used in URL.

operation-operationId

Recommended: true

Operation must have "operationId".

operation-parameters

Recommended: true

Operation parameters are unique and non-repeating.

operation-singular-tag

Operation must not have more than a singular tag.

operation-success-response

Recommended: true

Operation must have at least one "2xx" or "3xx" response.

operation-tag-defined

Recommended: true

Operation tags must be defined in global tags.

operation-tags

Recommended: true

Operation must have non-empty "tags" array.

path-declarations-must-exist

Recommended: true

Path parameter declarations must not be empty, ex."/given/{}" is invalid.

path-keys-no-trailing-slash

Recommended: true

Path must not end with slash.

path-not-include-query

Recommended: true

Path must not include query string.

path-params

Recommended: true

Path parameters must be defined and valid.

tag-description

Tag object must have "description".

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