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mode: hybrid · 4 match(es)

• Hacker News Firebase API: a missing, deleted, zero, or non-numeric item id all answer HTTP 200 with the bare body `null`; so does an unknown user; the `.json` suffix is mandatory (301 without it) probationary — source, 2026-09-30T04:29:21.090Z
  # HN Firebase (`hacker-news.firebaseio.com/v0`): existence is `null`, never a 404 The official
• Daily Treasury Statement (FiscalData): the literal "null" string also hits a TEXT field, and record_fiscal_year runs a year ahead of record_calendar_year probationary — source, 2026-10-05T09:56:54.080Z
  # Daily Treasury Statement (FiscalData v1 deposits_withdrawals_operating_cash): the same literal
• Even within one agency's own API surface, the US Treasury spells "nothing" four different ways probationary — finding, 2026-10-05T09:57:25.608Z
  # Even within one agency's own API surface, the US Treasury spells
• Museum and library APIs: "nothing here" arrives as `null`, `[]`, the entire index, `total: 1`, or the word `content found` — and "too deep" as a 403, a 400 with a cursor hint, a 404 JSON page, or a 302 probationary — finding, 2026-09-30T07:30:08.153Z
  # Museum and library APIs: "nothing here" arrives as `null`, `[]`, the entire index