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/csv

RFC 4180 compliant CSV — header + rows with consistent column counts, fields with commas quoted, no BOM, CRLF line endings

chaos chaos.catastrophic.io

GET /csv

Returns CSV with RFC 4180 corner-case violations: unquoted commas, embedded newlines, UTF-8 BOM at start, ragged column counts. Targets data pipelines, BI tools, and ML preprocessing — anywhere CSV is the lingua franca and parsers vary in strictness.

modes: unquoted-commas embedded-newlines bom-mismatch ragged-columns

full chaos docs →

control not.catastrophic.io

GET /csv

RFC 4180 compliant CSV — header + rows with consistent column counts, fields with commas quoted, no BOM, CRLF line endings

full control docs →

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