Vehicle API API Rules

# authorship: generated by API Evangelist tooling. Stamped 2026-08-18
# on the file's own generator header (roadmap#64). An unmarked file is
# NOT assumed to be ours -- absence of evidence was never stamped.
x-method: generated
# vehicle-api — Spectral ruleset (strengthened)
# Plain Spectral. Existing hand-authored rules preserved; measured rules added
# from this provider's own OpenAPI conventions by strengthen_ruleset.py,
# then self-validated against the spec.
#
# Provenance:
#   - servers-https-only: 100% of servers already https (error)
#   - servers-expected-domain: 1/1 servers on edmunds.com
#   - path-params-casing: camel @ 100% (n=5)
#   - query-params-casing: snake @ 88% (n=25)
#   - operationid-casing: camel @ 100% (n=7)
#   - schema-names-casing: pascal @ 100% (n=16)
#   - schema-properties-casing: snake @ 71% (n=65)
#   - security: global (root) — NOT emitting operation-security-required
#   - pagination params observed: ['pageSize']
#   - merge: kept 25 existing, added 5 measured, upgraded 0
#   - added: servers-expected-domain, path-params-casing, query-params-casing, schema-names-casing, schema-properties-casing
extends:
  - spectral:oas
rules:
  info-title-required:
    description: Info title must be defined.
    severity: error
    given: $.info
    then:
      field: title
      function: truthy
  info-description-required:
    description: Info description must be defined and non-empty.
    severity: warn
    given: $.info
    then:
      field: description
      function: truthy
  info-version-required:
    description: API version must be defined.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  openapi-version-3:
    description: Must use OpenAPI 3.x.
    severity: error
    given: $
    then:
      field: openapi
      function: pattern
      functionOptions:
        match: ^3\.
  servers-defined:
    description: At least one server must be defined.
    severity: error
    given: $
    then:
      field: servers
      function: truthy
  servers-https:
    description: Server URLs must use HTTPS.
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: ^https://
  paths-kebab-case:
    description: Path segments must use lowercase with hyphens or parameter brackets.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: ^(/[a-z0-9{}_/-]+)+$
  paths-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: /$
  operation-summary-required:
    description: Every operation must have a summary.
    severity: error
    given: $.paths[*][get,post,put,delete,patch]
    then:
      field: summary
      function: truthy
  operation-summary-vehicle-api-prefix:
    description: Operation summaries must start with "Vehicle API".
    severity: warn
    given: $.paths[*][get,post,put,delete,patch].summary
    then:
      function: pattern
      functionOptions:
        match: '^Vehicle API '
  operation-description-required:
    description: Every operation must have a description.
    severity: warn
    given: $.paths[*][get,post,put,delete,patch]
    then:
      field: description
      function: truthy
  operation-operationid-required:
    description: Every operation must have an operationId.
    severity: error
    given: $.paths[*][get,post,put,delete,patch]
    then:
      field: operationId
      function: truthy
  operation-operationid-camelcase:
    description: operationId must use camelCase.
    severity: warn
    given: $.paths[*][get,post,put,delete,patch].operationId
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-zA-Z0-9]+$
  operation-tags-required:
    description: Every operation must have at least one tag.
    severity: warn
    given: $.paths[*][get,post,put,delete,patch]
    then:
      field: tags
      function: truthy
  parameter-description-required:
    description: All parameters must have a description.
    severity: warn
    given: $..parameters[*]
    then:
      field: description
      function: truthy
  parameter-api-key-in-query:
    description: API key should be passed as query parameter named api_key.
    severity: info
    given: $.components.securitySchemes[*]
    then:
      function: schema
      functionOptions:
        schema:
          type: object
  response-success-required:
    description: Every operation must have at least one 2xx response.
    severity: error
    given: $.paths[*][get,post,put,delete,patch].responses
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
          - required:
            - '200'
          - required:
            - '201'
          - required:
            - '204'
  response-description-required:
    description: All responses must have a description.
    severity: error
    given: $.paths[*][get,post,put,delete,patch].responses[*]
    then:
      field: description
      function: truthy
  response-404-defined:
    description: GET operations by ID should define a 404 response.
    severity: info
    given: $.paths[*].get.responses
    then:
      function: schema
      functionOptions:
        schema:
          type: object
  schema-description-required:
    description: Top-level component schemas must have a description.
    severity: warn
    given: $.components.schemas[*]
    then:
      field: description
      function: truthy
  schema-properties-camelcase:
    description: Schema property names should use camelCase (Edmunds convention).
    severity: info
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-zA-Z0-9]*$
  security-schemes-defined:
    description: Security schemes must be defined in components.
    severity: error
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  vehicle-api-pagination:
    description: List operations should support pageSize and pageNum for pagination.
    severity: info
    given: $.paths[*].get.operationId
    then:
      function: pattern
      functionOptions:
        match: ^(list|search|get)
  get-no-request-body:
    description: GET operations must not have a request body.
    severity: error
    given: $.paths[*].get
    then:
      field: requestBody
      function: falsy
  no-empty-descriptions:
    description: Descriptions must not be empty strings.
    severity: warn
    given: $..description
    then:
      function: pattern
      functionOptions:
        match: .+
  servers-expected-domain:
    description: Server URLs should be on the edmunds.com domain.
    severity: warn
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: edmunds\.com
  path-params-casing:
    description: Path parameters should be camelCase (the dominant convention in this API).
    severity: warn
    given: $.paths[*].parameters[?(@.in=='path')].name
    then:
      function: casing
      functionOptions:
        type: camel
  query-params-casing:
    description: Query parameters should be snake_case (the dominant convention in this API).
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in=='query')]
    then:
      field: name
      function: casing
      functionOptions:
        type: snake
  schema-names-casing:
    description: Component schema names should be PascalCase (the dominant convention in this API).
    severity: warn
    given: $.components.schemas
    then:
      field: '@key'
      function: casing
      functionOptions:
        type: pascal
  schema-properties-casing:
    description: Schema properties should be snake_case (the dominant convention in this API).
    severity: info
    given: $.components.schemas[*].properties
    then:
      field: '@key'
      function: casing
      functionOptions:
        type: snake