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/matched-content-type

JSON body with a matching application/json header

chaos chaos.catastrophic.io

GET /wrong-content-type

Returns a body whose declared Content-Type does not match its actual format. Default sends a JSON body labelled text/html. Other modes mismatch JSON-as-PNG, XML-as-JSON, HTML-as-JSON, or omit the Content-Type entirely. The X-Chaos-Body-Format header exposes the body's real format so clients can detect the mismatch programmatically.

control not.catastrophic.io

GET /matched-content-type

JSON body with a matching application/json header

Build against not.catastrophic.io/matched-content-type, then flip the hostname to chaos.catastrophic.io to exercise the chaos.