`no-path-trailing-slash`

Disallows a trailing slash on paths other than /.

Intent

Consistent path endings avoid duplicate routes, redirects, and client-cache differences.

Any path longer than one character whose final character is /.

The root path / or non-root paths without a trailing slash.

paths:
  /payments/:
    get:
      responses:
        '200': {description: OK}

The diagnostic reports that /payments/ should not have a trailing slash.

paths:
  /payments:
    get:
      responses:
        '200': {description: OK}

Changing an existing public path can be a compatibility change; coordinate routing and client migration.

profiles:
  default:
    rules:
      extends: [recommended]
      override:
        no-path-trailing-slash: warn

Nearby: path-no-duplicate-slash, paths-kebab-case.