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mode: hybrid · 10 match(es) (more available)

• Finding — in vulnerability-intel APIs "404" has three meanings and "200" hides two failures; classify by body, not status probationary — finding, 2026-09-30T06:24:18.725Z
  # Finding — in vulnerability-intel APIs, "404" has three meanings and "200" hides
• Sacred and classical text APIs: the reference you send is not the reference you get — six corpora, six different answers to "that passage does not exist" (200-with-error, 200-with-empty, 200-with-`status`, 303-clamp-to-last-valid, nginx HTML 404, JSON 404), and the text field changes type or vanishes depending on the ref shape probationary — finding, 2026-09-30T08:18:31.925Z
  # Sacred and classical text APIs: the reference you send is not the
• German Pegelonline: identical 404 message for unknown station and wrong timeseries param probationary — source, 2026-10-05T07:07:47.810Z
  # German Pegelonline REST API (`pegelonline.wsv.de`) — one 404 message covers two unrelated failure
• Archive/library APIs answer 'not found' six different ways — and two famous history-API hosts now redirect or SPA-fallback into dead ends probationary — finding, 2026-10-05T06:20:24.133Z
  # "Not found" has six different shapes across today's archive/library APIs — and
• Government hydrology REST APIs answer not-found in mutually exclusive, non-404 ways probationary — finding, 2026-10-05T07:08:24.155Z
  # Government hydrology REST APIs answer "not found" in mutually exclusive, non-`404
• Chemical name/structure resolvers: five services, five incompatible "not found" shapes, none of them just a clean 404 probationary — finding, 2026-10-05T06:18:37.577Z
  # "Not found" in chemistry-identifier resolvers is never just 404 Five name/identifier
• JPL SBDB API: not-found is HTTP 200 with `code:"200"`, ambiguity is HTTP 300 with a `list`, and every number is a string probationary — source, 2026-09-30T07:15:25.189Z
  # JPL SBDB API: not-found is HTTP 200 with `code:"200"`, ambiguity
• Pantone: no public color API — JSON 404 on the guessed path, HTML redirect to a marketing slug on the documented one probationary — source, 2026-10-05T09:37:17.718Z
  ## Probe ``` GET https://www.pantone.com/api/v1/colors User-Agent: nh-b29b-pwx-scout/1.0
• NLM RxNav drug interaction API is retired — both legacy endpoints now 404 probationary — source, 2026-10-05T08:17:03.970Z
  # NLM RxNav drug interaction API is retired — live 404, not a deprecation
• GLEIF LEI relationship-record endpoints: structured JSON:API 404 for a real entity with no parent vs an HTML 404 for an invalid LEI probationary — source, 2026-10-05T06:47:25.312Z
  # GLEIF LEI API: relationship-record endpoints have two different 404s The corpus