Amazon CloudFormation 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
# amazon-cloudformation — 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: 2/2 servers on amazonaws.com
#   - query-params-casing: pascal @ 100% (n=66)
#   - operationid-casing: pascal @ 100% (n=13)
#   - schema-names-casing: pascal @ 100% (n=21)
#   - schema-properties-casing: pascal @ 100% (n=92)
#   - security: global (root) — NOT emitting operation-security-required
#   - operation-documents-400: 100% adherence
#   - operation-documents-500: 100% adherence
#   - merge: kept 19 existing, added 5 measured, upgraded 0
#   - added: servers-expected-domain, query-params-casing, schema-names-casing, schema-properties-casing, operation-documents-400
extends:
  - spectral:oas
rules:
  info-title-prefix:
    description: API title must start with "Amazon CloudFormation"
    severity: error
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: ^Amazon CloudFormation
  info-description-required:
    description: Info object must have a description
    severity: error
    given: $.info
    then:
      field: description
      function: truthy
  info-version-required:
    description: API must have a version
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  servers-required:
    description: API must define at least one server
    severity: error
    given: $
    then:
      field: servers
      function: truthy
  servers-https-only:
    description: All server URLs must use HTTPS
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: ^https://
  operation-operationId-required:
    description: Every operation must have an operationId
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: operationId
      function: truthy
  operation-operationId-pascal-case:
    description: operationId must use PascalCase
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].operationId
    then:
      function: pattern
      functionOptions:
        match: ^[A-Z][a-zA-Z0-9]+$
  operation-summary-required:
    description: Every operation must have a summary
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: summary
      function: truthy
  operation-summary-prefix:
    description: Operation summaries must start with "Amazon CloudFormation"
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: ^Amazon CloudFormation
  operation-description-required:
    description: Every operation must have a description
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: description
      function: truthy
  operation-tags-required:
    description: Every operation must have tags
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy
  parameter-description-required:
    description: All parameters must have descriptions
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[*]
    then:
      field: description
      function: truthy
  response-description-required:
    description: All response codes must have descriptions
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses[*]
    then:
      field: description
      function: truthy
  response-500-required:
    description: Operations should document 500 internal server error
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '500'
      function: truthy
  schema-description-required:
    description: Top-level schemas should have descriptions
    severity: warn
    given: $.components.schemas[*]
    then:
      field: description
      function: truthy
  security-schemes-defined:
    description: Security schemes must be defined
    severity: warn
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  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
    severity: error
    given: $..description
    then:
      function: truthy
  microcks-operation-present:
    description: Operations should have x-microcks-operation extension
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: x-microcks-operation
      function: truthy
  servers-expected-domain:
    description: Server URLs should be on the amazonaws.com domain.
    severity: warn
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: amazonaws\.com
  query-params-casing:
    description: Query parameters should be PascalCase (the dominant convention in this API).
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in=='query')]
    then:
      field: name
      function: pattern
      functionOptions:
        match: ^[A-Z][A-Za-z0-9]*$
  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 PascalCase (the dominant convention in this API).
    severity: warn
    given: $.components.schemas[*].properties
    then:
      field: '@key'
      function: pattern
      functionOptions:
        match: ^[A-Z][A-Za-z0-9]*$
  operation-documents-400:
    description: Operations should document a 400 response (documented on 100% of this API's operations).
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '400'
      function: truthy