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/jsonl

conformant NDJSON — one valid JSON object per line, consistent schema across records, LF line endings, trailing newline, no BOM

chaos chaos.catastrophic.io

GET /jsonl

Returns JSON Lines (NDJSON) streams with stream-level violations. Targets ML pipelines, log aggregators, and AI chat exports — anywhere line-delimited JSON is consumed. Default mode is schema drift mid-stream; other modes cover blank lines, partial final records, and BOM start.

modes: schema-drift blank-lines partial-final-line bom-start

full chaos docs →

control not.catastrophic.io

GET /jsonl

conformant NDJSON — one valid JSON object per line, consistent schema across records, LF line endings, trailing newline, no BOM

full control docs →

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