Changes in version 1.0.1.9000 - Error messages for invalid inputs have been improved. Changes in version 1.0.1 (2021-06-16) - Removes the LazyData field from the DESCRIPTION file, which was generating a NOTE in CRAN's automated checking. Changes in version 1.0.0 (2021-02-12) - Initial release. httpproblems provides tools for emitting the "Problem Details" structure defined in RFC 7807. It is intended to help R users report errors from HTTP APIs in a consistent, standard way. - Provides http_problem() for creating the Problem Details structure, plus several helper functions for HTTP 400 Bad Request, 404 Not Found, 401 Unauthorized, 403 Forbidden, 409 Conflict, and 500 Internal Server Error. - Provides stop_for_*() variants that signal a custom condition for these problems. - Provides http_problem_types() for listing built-in type and title entries.