Deswik API Rules

# authorship: generated by API Evangelist tooling (derive-rules.py, 2026-11-05). x-method: generated
# Every rule below was MEASURED against Deswik's own contract before it was written; a rule is present only
# when the contract satisfies it at 80% or more. Severity: 100% -> error, >= 90% -> warn, else info.
# Provenance:
#   - operation-has-tags: 100%
#   - operation-has-success-response: 100%
#   - path-no-trailing-slash: 100%
#   - path-params-in-braces: 100%
#   - write-declares-request-body: 98%
#   - response-media-type: 100%
#   - property-name-casing-camel: 100%
#   - info-title-present: 100%
#   - info-version-present: 100%
#   - info-version-semver: 100%
#   - operation-tags-present: 100%
#   - operation-responses-present: 100%
#   - parameter-name-present: 100%
#   - parameter-in-present: 100%
#   - parameter-in-values: 100%
#   - parameter-schema-present: 100%
#   - requestbody-content-present: 100%
#   - mediatype-schema-present: 100%
#   - response-description-present: 100%
#   - response-description-min-length: 100%
#   - schema-type-present: 100%
#   - schema-type-values: 97%
#   - schema-format-values: 100%
#   - schema-properties-present: 97%
#   - schema-additionalproperties-present: 97%
x-method: generated
x-generator: derive-rules.py
x-generated: '2026-11-05'
x-source:
- openapi/deswik-openapi.json
x-self-check:
  status: skipped
  reason: gate not installed
extends:
- - spectral:oas
  - recommended
formats:
- oas3
rules:
  operation-has-tags:
    description: 'Every operation is tagged (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy
    x-pattern-key: Operation.tags|present
  operation-has-success-response:
    description: 'Every operation declares a 2xx response (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          patternProperties:
            ^2\d\d$: {}
          minProperties: 1
    x-pattern-key: Operation.responses|schema:07e20b47
  path-no-trailing-slash:
    description: 'Paths carry no trailing slash (measured: 100% of this contract)'
    severity: error
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: ./$
    x-pattern-key: Paths.{key}|pattern:!./$
  path-params-in-braces:
    description: 'Path parameters use {braces}, not :colon (measured: 100% of this contract)'
    severity: error
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: ':'
    x-pattern-key: 'Paths.{key}|pattern:!:'
  write-declares-request-body:
    description: 'POST and PUT declare a request body (measured: 98% of this contract)'
    severity: warn
    given: $.paths[*][post,put]
    then:
      field: requestBody
      function: truthy
    x-pattern-key: Operation.requestBody|present
  response-media-type:
    description: 'Responses are served as text/plain (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses[*].content
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          required:
          - text/plain
    x-pattern-key: Response.content|schema:44ce88c3
  property-name-casing-camel:
    description: 'Schema property names are camel case (measured: 99% of this contract)'
    severity: warn
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-zA-Z0-9]*$
    x-pattern-key: Schema.properties{key}|pattern:^[a-z][a-zA-Z0-9]*$
  info-title-present:
    description: 'Info declares title (measured: 100% of this contract)'
    severity: error
    given: $.info
    then:
      field: title
      function: defined
    x-pattern-key: Info.title|present
  info-version-present:
    description: 'Info declares version (measured: 100% of this contract)'
    severity: error
    given: $.info
    then:
      field: version
      function: defined
    x-pattern-key: Info.version|present
  info-version-semver:
    description: 'info.version is numeric (measured: 100% of this contract)'
    severity: error
    given: $.info.version
    then:
      function: pattern
      functionOptions:
        match: ^v?\d+(\.\d+)*
    x-pattern-key: Info.version|pattern:^v?\d+(\.\d+)*
  operation-tags-present:
    description: 'Operation declares tags (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace]
    then:
      field: tags
      function: defined
    x-pattern-key: Operation.tags|present
  operation-responses-present:
    description: 'Operation declares responses (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace]
    then:
      field: responses
      function: defined
    x-pattern-key: Operation.responses|present
  parameter-name-present:
    description: 'Parameter declares name (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].parameters[*]
    then:
      field: name
      function: defined
    x-pattern-key: Parameter.name|present
  parameter-in-present:
    description: 'Parameter declares in (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].parameters[*]
    then:
      field: in
      function: defined
    x-pattern-key: Parameter.in|present
  parameter-in-values:
    description: 'Parameter.in is one of path, query (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].parameters[*].in
    then:
      function: enumeration
      functionOptions:
        values:
        - path
        - query
    x-pattern-key: Parameter.in|enum:path,query
  parameter-schema-present:
    description: 'Parameter declares schema (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].parameters[*]
    then:
      field: schema
      function: defined
    x-pattern-key: Parameter.schema|present
  requestbody-content-present:
    description: 'RequestBody declares content (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].requestBody
    then:
      field: content
      function: defined
    x-pattern-key: RequestBody.content|present
  mediatype-schema-present:
    description: 'MediaType declares schema (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].responses[*].content[*]
    then:
      field: schema
      function: defined
    x-pattern-key: MediaType.schema|present
  response-description-present:
    description: 'Response declares description (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].responses[*]
    then:
      field: description
      function: defined
    x-pattern-key: Response.description|present
  response-description-min-length:
    description: 'Response.description runs at least 7 characters (measured: 100% of this contract)'
    severity: error
    given: $.paths[*][get,put,post,delete,patch,options,head,trace].responses[*].description
    then:
      function: length
      functionOptions:
        min: 7
    x-pattern-key: Response.description|length
  schema-type-present:
    description: 'Schema declares type (measured: 100% of this contract)'
    severity: error
    given: $.components.schemas[*]
    then:
      field: type
      function: defined
    x-pattern-key: Schema.type|present
  schema-type-values:
    description: 'Schema.type is one of object (measured: 97% of this contract)'
    severity: info
    given: $.components.schemas[*].type
    then:
      function: enumeration
      functionOptions:
        values:
        - object
    x-pattern-key: Schema.type|enum:object
  schema-format-values:
    description: 'Schema.format is one of int32 (measured: 100% of this contract)'
    severity: error
    given: $.components.schemas[*].format
    then:
      function: enumeration
      functionOptions:
        values:
        - int32
    x-pattern-key: Schema.format|enum:int32
  schema-properties-present:
    description: 'Schema declares properties (measured: 97% of this contract)'
    severity: warn
    given: $.components.schemas[*]
    then:
      field: properties
      function: defined
    x-pattern-key: Schema.properties|present
  schema-additionalproperties-present:
    description: 'Schema declares additionalProperties (measured: 97% of this contract)'
    severity: warn
    given: $.components.schemas[*]
    then:
      field: additionalProperties
      function: defined
    x-pattern-key: Schema.additionalProperties|present