Coupa API Rules

extends: ["spectral:oas"]
documentationUrl: https://compass.coupa.com/en-us/products/product-documentation/integration-technical-documentation
rules:
  coupa-info-contact:
    description: API info object should include contact information.
    message: "{{description}}: info.contact is required."
    given: "$.info"
    severity: error
    then:
      field: contact
      function: truthy
  coupa-info-license:
    description: API info object should include license information.
    given: "$.info"
    severity: warn
    then:
      field: license
      function: truthy
  coupa-server-https:
    description: All servers must use HTTPS.
    given: "$.servers[*].url"
    severity: error
    then:
      function: pattern
      functionOptions:
        match: "^https://"
  coupa-base-url:
    description: Servers should reference the Coupa instance host.
    given: "$.servers[*].url"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "coupahost.com"
  coupa-required-auth:
    description: Operations should be protected by OAuth 2.0 or API key.
    given: "$.security"
    severity: error
    then:
      function: truthy
  coupa-operation-tags:
    description: Every operation must have at least one tag.
    given: "$.paths.*[get,post,put,delete,patch]"
    severity: error
    then:
      field: tags
      function: truthy
  coupa-operation-summary:
    description: Every operation must have a summary.
    given: "$.paths.*[get,post,put,delete,patch]"
    severity: error
    then:
      field: summary
      function: truthy
  coupa-operation-description:
    description: Operations should include a description.
    given: "$.paths.*[get,post,put,delete,patch]"
    severity: warn
    then:
      field: description
      function: truthy
  coupa-summary-prefix:
    description: Every operation summary should be prefixed with "Coupa".
    message: '{{description}}: summary should start with "Coupa".'
    given: "$.paths.*[get,post,put,delete,patch].summary"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^Coupa"
  coupa-operation-id:
    description: Every operation must have an operationId.
    given: "$.paths.*[get,post,put,delete,patch]"
    severity: error
    then:
      field: operationId
      function: truthy
  coupa-resource-naming:
    description: Path segments should use snake_case to match Coupa resource naming.
    given: "$.paths"
    severity: warn
    then:
      field: "@key"
      function: pattern
      functionOptions:
        match: "^/[a-z0-9_/{}]+$"
  coupa-error-responses:
    description: Operations should declare 401 and 404 error responses.
    given: "$.paths.*[get,put,delete,patch]"
    severity: warn
    then:
      field: responses.401
      function: truthy
  coupa-pagination-params:
    description: List operations should support offset and limit query parameters.
    given: "$.paths[?(@property.match(/.*s$/))][get].parameters"
    severity: info
    then:
      function: schema
      functionOptions:
        schema:
          type: array