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/json

valid JSON, correctly labelled application/json

chaos chaos.catastrophic.io

GET /json

Returns syntactically invalid JSON with a Content-Type of application/json. Default bundles three flaws in one payload (missing closing brace, unquoted key, trailing comma). Use ?mode= to isolate a single failure mode for targeted parser testing.

modes: all missing-brace unquoted-key trailing-comma

full chaos docs →

control not.catastrophic.io

GET /json

valid JSON, correctly labelled application/json

full control docs →

Build against not.catastrophic.io/json, then flip the hostname to chaos.catastrophic.io to exercise the chaos.