Edamam API Rules

# edamam — 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: 4/4 servers on edamam.com
#   - query-params-casing: snake @ 77% (n=35)
#   - operationid-casing: camel @ 100% (n=7)
#   - schema-names-casing: pascal @ 100% (n=23)
#   - schema-properties-casing: snake @ 72% (n=92)
#   - security: global (root) — NOT emitting operation-security-required
#   - error-schema-defined: Error
#   - operation-documents-401: 100% adherence
#   - merge: kept 39 existing, added 5 measured, upgraded 0
#   - added: query-params-casing, schema-names-casing, schema-properties-casing, error-schema-defined, no-empty-descriptions
extends:
  - spectral:oas
rules:
  info-title-required:
    description: The API must have a title.
    severity: error
    given: $.info
    then:
      field: title
      function: truthy
  info-title-edamam-prefix:
    description: API title should start with "Edamam".
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: ^Edamam
  info-description-required:
    description: The API must have a meaningful description.
    severity: warn
    given: $.info
    then:
      field: description
      function: truthy
  info-description-min-length:
    description: The API description should be at least 40 characters.
    severity: info
    given: $.info.description
    then:
      function: length
      functionOptions:
        min: 40
  info-version-required:
    description: The API must declare a version.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  info-contact-required:
    description: The API should declare contact information.
    severity: info
    given: $.info
    then:
      field: contact
      function: truthy
  openapi-version-3-1:
    description: Edamam specs target OpenAPI 3.1.x.
    severity: warn
    given: $.openapi
    then:
      function: pattern
      functionOptions:
        match: ^3\.1\.
  servers-defined:
    description: At least one server must be defined.
    severity: error
    given: $.servers
    then:
      function: length
      functionOptions:
        min: 1
  servers-https-only:
    description: Servers must use HTTPS.
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: ^https://
  servers-edamam-host:
    description: Production server should be api.edamam.com.
    severity: info
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: api\.edamam\.com
  servers-description:
    description: Each server should have a description.
    severity: info
    given: $.servers[*]
    then:
      field: description
      function: truthy
  paths-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: .+/$
  paths-kebab-case:
    description: Path segments should be lowercase kebab-case (allowing version tokens like v2 and {param}
      placeholders).
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: ^(/(\{[a-zA-Z0-9_]+\}|[a-z0-9]+(-[a-z0-9]+)*))+$
  paths-no-query-string:
    description: Path keys must not contain query strings.
    severity: error
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: \?
  operation-operationId-required:
    description: Every operation must declare an operationId.
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: operationId
      function: truthy
  operation-operationId-camelcase:
    description: operationId should be camelCase (e.g. searchRecipes, analyzeIngredient).
    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: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: summary
      function: truthy
  operation-summary-edamam-prefix:
    description: Operation summaries should be prefixed with "Edamam".
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: '^Edamam '
  operation-description-required:
    description: Every operation should have a description.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: description
      function: truthy
  operation-tags-required:
    description: Every operation must be tagged.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy
  tags-global-defined:
    description: A global tags array should be defined.
    severity: info
    given: $
    then:
      field: tags
      function: truthy
  tag-description-required:
    description: Each global tag should have a description.
    severity: info
    given: $.tags[*]
    then:
      field: description
      function: truthy
  tag-title-case:
    description: Tag names should be Title Case (e.g. "Recipe Search", "Food Database").
    severity: warn
    given: $.tags[*].name
    then:
      function: pattern
      functionOptions:
        match: ^[A-Z][A-Za-z0-9]*( [A-Z][A-Za-z0-9]*)*$
  parameter-description-required:
    description: Every parameter should have a description.
    severity: warn
    given: $.paths[*][*].parameters[*]
    then:
      field: description
      function: truthy
  parameter-schema-type:
    description: Every parameter schema must declare a type.
    severity: warn
    given: $.paths[*][*].parameters[*].schema
    then:
      field: type
      function: truthy
  parameter-example-encouraged:
    description: Parameters should provide an example value.
    severity: info
    given: $.paths[*][*].parameters[*]
    then:
      field: example
      function: truthy
  request-body-json:
    description: Request bodies should offer application/json content.
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/json
      function: truthy
  response-2xx-required:
    description: Every operation must define at least one 2xx response.
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '200'
      function: truthy
  response-401-defined:
    description: Authenticated operations should document a 401 response.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '401'
      function: truthy
  response-description-required:
    description: Every response must have a description.
    severity: warn
    given: $.paths[*][*].responses[*]
    then:
      field: description
      function: truthy
  schema-property-camelcase:
    description: Schema property names should be camelCase, matching Edamam's JSON fields (e.g. totalNutrients,
      healthLabels, foodId). Underscore-prefixed HATEOAS keys like _links and SCREAMING_SNAKE nutrient
      codes are permitted.
    severity: info
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: ^(_?[a-z][a-zA-Z0-9]*|[A-Z][A-Z0-9_.]*)$
  schema-object-type:
    description: Schemas should declare a type.
    severity: info
    given: $.components.schemas[*]
    then:
      field: type
      function: truthy
  security-global-defined:
    description: A global security requirement should be defined.
    severity: warn
    given: $
    then:
      field: security
      function: truthy
  security-schemes-defined:
    description: Security schemes must be defined under components.
    severity: warn
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  security-scheme-description:
    description: Each security scheme should be described.
    severity: info
    given: $.components.securitySchemes[*]
    then:
      field: description
      function: truthy
  get-no-request-body:
    description: GET operations must not declare a request body.
    severity: error
    given: $.paths[*].get
    then:
      field: requestBody
      function: falsy
  post-has-request-body:
    description: POST operations should declare a request body.
    severity: info
    given: $.paths[*].post
    then:
      field: requestBody
      function: truthy
  operation-microcks-extension:
    description: Operations should carry an x-microcks-operation extension for mock-server compatibility.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: x-microcks-operation
      function: truthy
  response-examples-encouraged:
    description: JSON responses should provide examples.
    severity: info
    given: $.paths[*][*].responses[*].content.application/json
    then:
      field: examples
      function: truthy
  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
  error-schema-defined:
    description: A shared error schema (Error) should be defined for error payloads.
    severity: warn
    given: $.components.schemas
    then:
      field: Error
      function: truthy
  no-empty-descriptions:
    description: Descriptions must not be empty strings.
    severity: warn
    given: $..description
    then:
      function: truthy