BlaBlaCar Bus API · API Governance Rules

BlaBlaCar Bus API API Rules

Spectral linting rules defining API design standards and conventions for BlaBlaCar Bus API.

41 Rules error 13 warn 23 info 5
Generated by API Evangelist Written by API Evangelist tooling for BlaBlaCar Bus API's APIs. It is a starting point, not a ruleset BlaBlaCar Bus API publishes or enforces.
View Rules File View on GitHub

Rule Categories

delete external get info no openapi operation parameter path paths post query request response schema security servers tags

Rules

warn
info-title-prefix
API title must start with "BlaBlaCar Bus"
$.info.title
error
info-description-required
Info object must have a description
$.info
error
info-version-required
Info object must have a version
$.info
warn
info-contact-required
Info object should have contact information
$.info
error
openapi-version
Must use OpenAPI 3.x
$
error
servers-defined
At least one server must be defined
$
error
servers-https
Server URLs must use HTTPS
$.servers[*].url
info
servers-description
Server entries should have descriptions
$.servers[*]
warn
paths-kebab-case
Path segments must use kebab-case or use path parameters
$.paths[*]~
warn
paths-no-trailing-slash
Paths must not have trailing slashes
$.paths[*]~
error
operation-summary-required
Every operation must have a summary
$.paths[*][get,post,put,patch,delete,options,head]
warn
operation-summary-prefix
Operation summaries must start with "BlaBlaCar Bus"
$.paths[*][get,post,put,patch,delete].summary
warn
operation-description-required
Every operation must have a description
$.paths[*][get,post,put,patch,delete,options,head]
error
operation-id-required
Every operation must have an operationId
$.paths[*][get,post,put,patch,delete,options,head]
warn
operation-id-camel-case
operationId must use camelCase
$.paths[*][get,post,put,patch,delete].operationId
warn
operation-tags-required
Every operation must have at least one tag
$.paths[*][get,post,put,patch,delete]
warn
parameter-description-required
Every parameter must have a description
$.paths[*][get,post,put,patch,delete].parameters[*]
error
parameter-schema-required
Every parameter must define a schema
$.paths[*][get,post,put,patch,delete].parameters[*]
info
parameter-snake-case
Parameter names should use snake_case
$.paths[*][get,post,put,patch,delete].parameters[*].name
warn
request-body-json
Request bodies must support application/json content type
$.paths[*][post,put,patch].requestBody.content
info
request-body-description
Request bodies should have a description
$.paths[*][post,put,patch].requestBody
error
response-success-required
Every operation must define at least one 2xx response
$.paths[*][get,post,put,patch,delete]
warn
response-401-defined
Operations should define a 401 Unauthorized response
$.paths[*][get,post,put,patch,delete].responses
error
response-description-required
Every response must have a description
$.paths[*][get,post,put,patch,delete].responses[*]
warn
response-404-on-path-params
Operations with path parameters should define a 404 response
$.paths[*~.*\{.*\}.*][get,delete].responses
warn
schema-property-snake-case
Schema property names must use snake_case
$.components.schemas[*].properties[*]~
warn
schema-description-required
Top-level schemas must have a description
$.components.schemas[*]
warn
schema-type-required
Schema objects must define a type
$.components.schemas[*]
error
security-schemes-defined
At least one security scheme must be defined in components
$.components
warn
security-global-defined
Global security must be defined
$
warn
post-has-request-body
POST operations should have a request body
$.paths[*].post
error
get-no-request-body
GET operations must not have a request body
$.paths[*].get
warn
delete-returns-success
DELETE operations should return a success response
$.paths[*].delete.responses
error
no-empty-descriptions
Descriptions must not be empty strings
$..description
info
tags-global-defined
Global tags array should be defined
$
info
external-docs-encouraged
External documentation should be provided
$
warn
servers-expected-domain
Server URLs should be on the blablacar.com domain.
$.servers[*].url
warn
path-params-casing
Path parameters should be snake_case (the dominant convention in this API).
$.paths[*].parameters[?(@.in=='path')].name
warn
query-params-casing
Query parameters should be snake_case (the dominant convention in this API).
$.paths[*][get,post,put,patch,delete].parameters[?(@.in=='query')]
warn
schema-names-casing
Component schema names should be PascalCase (the dominant convention in this API).
$.components.schemas
warn
schema-properties-casing
Schema properties should be snake_case (the dominant convention in this API).
$.components.schemas[*].properties

Spectral Ruleset

Raw ↑ 
# 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
# blablacar-bus-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 blablacar.com
#   - path-params-casing: snake @ 100% (n=3)
#   - query-params-casing: snake @ 100% (n=9)
#   - operationid-casing: camel @ 100% (n=7)
#   - schema-names-casing: pascal @ 100% (n=12)
#   - schema-properties-casing: snake @ 100% (n=48)
#   - security: global (root) — NOT emitting operation-security-required
#   - operation-documents-401: 100% adherence
#   - merge: kept 36 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-prefix:
    description: API title must start with "BlaBlaCar Bus"
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: ^BlaBlaCar Bus
  info-description-required:
    description: Info object must have a description
    severity: error
    given: $.info
    then:
      field: description
      function: truthy
  info-version-required:
    description: Info object must have a version
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  info-contact-required:
    description: Info object should have contact information
    severity: warn
    given: $.info
    then:
      field: contact
      function: truthy
  openapi-version:
    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://
  servers-description:
    description: Server entries should have descriptions
    severity: info
    given: $.servers[*]
    then:
      field: description
      function: truthy
  paths-kebab-case:
    description: Path segments must use kebab-case or use path parameters
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: ^(/[a-z0-9-]+|\{[a-z_]+\})+$
  paths-no-trailing-slash:
    description: Paths must not have trailing slashes
    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,patch,delete,options,head]
    then:
      field: summary
      function: truthy
  operation-summary-prefix:
    description: Operation summaries must start with "BlaBlaCar Bus"
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: ^BlaBlaCar Bus
  operation-description-required:
    description: Every operation must have a description
    severity: warn
    given: $.paths[*][get,post,put,patch,delete,options,head]
    then:
      field: description
      function: truthy
  operation-id-required:
    description: Every operation must have an operationId
    severity: error
    given: $.paths[*][get,post,put,patch,delete,options,head]
    then:
      field: operationId
      function: truthy
  operation-id-camel-case:
    description: operationId must use camelCase
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].operationId
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-zA-Z0-9]+$
  operation-tags-required:
    description: Every operation must have at least one tag
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy
  parameter-description-required:
    description: Every parameter must have a description
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[*]
    then:
      field: description
      function: truthy
  parameter-schema-required:
    description: Every parameter must define a schema
    severity: error
    given: $.paths[*][get,post,put,patch,delete].parameters[*]
    then:
      field: schema
      function: truthy
  parameter-snake-case:
    description: Parameter names should use snake_case
    severity: info
    given: $.paths[*][get,post,put,patch,delete].parameters[*].name
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-z0-9_]*$
  request-body-json:
    description: Request bodies must support application/json content type
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/json
      function: truthy
  request-body-description:
    description: Request bodies should have a description
    severity: info
    given: $.paths[*][post,put,patch].requestBody
    then:
      field: description
      function: truthy
  response-success-required:
    description: Every operation must define at least one 2xx response
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: responses
      function: truthy
  response-401-defined:
    description: Operations should define a 401 Unauthorized response
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '401'
      function: truthy
  response-description-required:
    description: Every response must have a description
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses[*]
    then:
      field: description
      function: truthy
  response-404-on-path-params:
    description: Operations with path parameters should define a 404 response
    severity: warn
    given: $.paths[*~.*\{.*\}.*][get,delete].responses
    then:
      field: '404'
      function: truthy
  schema-property-snake-case:
    description: Schema property names must use snake_case
    severity: warn
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-z0-9_]*$
  schema-description-required:
    description: Top-level schemas must have a description
    severity: warn
    given: $.components.schemas[*]
    then:
      field: description
      function: truthy
  schema-type-required:
    description: Schema objects must define a type
    severity: warn
    given: $.components.schemas[*]
    then:
      field: type
      function: truthy
  security-schemes-defined:
    description: At least one security scheme must be defined in components
    severity: error
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  security-global-defined:
    description: Global security must be defined
    severity: warn
    given: $
    then:
      field: security
      function: truthy
  post-has-request-body:
    description: POST operations should have a request body
    severity: warn
    given: $.paths[*].post
    then:
      field: requestBody
      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
  delete-returns-success:
    description: DELETE operations should return a success response
    severity: warn
    given: $.paths[*].delete.responses
    then:
      function: truthy
  no-empty-descriptions:
    description: Descriptions must not be empty strings
    severity: error
    given: $..description
    then:
      function: pattern
      functionOptions:
        match: .+
  tags-global-defined:
    description: Global tags array should be defined
    severity: info
    given: $
    then:
      field: tags
      function: truthy
  external-docs-encouraged:
    description: External documentation should be provided
    severity: info
    given: $
    then:
      field: externalDocs
      function: truthy
  servers-expected-domain:
    description: Server URLs should be on the blablacar.com domain.
    severity: warn
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: blablacar\.com
  path-params-casing:
    description: Path parameters should be snake_case (the dominant convention in this API).
    severity: warn
    given: $.paths[*].parameters[?(@.in=='path')].name
    then:
      function: casing
      functionOptions:
        type: snake
  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: warn
    given: $.components.schemas[*].properties
    then:
      field: '@key'
      function: casing
      functionOptions:
        type: snake

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