What is not compared

The grammar has no place for the items below, so a change in any of them never makes can-i-deploy fail.

• Headers. A provider that starts requiring one, and a consumer that stops sending one, both pass.
• Query parameters. A renamed parameter, a newly required one, or a change in how pagination is requested is not a break.
• Enum values. A string is a string: a provider that starts returning a fourth value of status is compatible with a consumer that handles three.
• Formats. A date-time string, an email and free text are the same string.