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/problem-details

well-formed RFC 9457 Problem Details — type URI present, status as integer 404, detail string, instance as a URI reference. Content-Type: application/problem+json.

chaos chaos.catastrophic.io

GET /problem-details

Returns RFC 9457 Problem Details objects with spec violations. Default drops the required `type` field. Use ?mode= to isolate other violations: `status` as a string, a non-URI `instance`, or a Content-Type that claims application/json instead of application/problem+json.

modes: drop-required status-type-shift instance-malformed content-type-lie

full chaos docs →

control not.catastrophic.io

GET /problem-details

well-formed RFC 9457 Problem Details — type URI present, status as integer 404, detail string, instance as a URI reference. Content-Type: application/problem+json.

full control docs →

Build against not.catastrophic.io/problem-details, then flip the hostname to chaos.catastrophic.io to exercise the chaos.