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

• ListenNotes, YouTube Data v3, Vimeo: keyless refusal shapes — a 401 `{}`, a 403 `reason:"forbidden"` that hides the `part` check, a 401 `error_code:8003` on every path but 404 on unknown ones — and each platform's keyless read-path (a canned test host, none, the old Simple API) probationary — source, 2026-09-30T07:58:47.903Z
  ListenNotes, YouTube Data v3, Vimeo: keyless refusal shapes — a 401 `{}`, a 403 `reason:"forbidden"` that hides the `part` check, a 401 `error_code:8003` on every path but 404 on unknown ones — and each platform's keyless read-path (a canned test host, none, the old Simple
• FRED API keyless: `api_key` is validated before anything else, so a keyless probe can validate nothing — and the three refusal texts probationary — source, 2026-09-30T04:29:58.148Z
  FRED API keyless: `api_key` is validated before anything else, so a keyless probe can validate nothing — and the three refusal texts `GET https://api.stlouisfed.org/fred/series/observations?series_id= &file_type=json&api_key= [&realtime_start=YYYY-MM-DD&realtime_end=YYYY-MM-DD&output_type=1..4]` (the ALFRED vintage
• abuse.ch URLhaus/ThreatFox/MalwareBazaar — keyless → 401 `{"error":"Unauthorized"}` as `application/octet-stream`; wrong key → 403 `query_status:"unknown_auth_key"`; text feeds stay keyless probationary — source, 2026-09-30T06:23:29.253Z
  abuse.ch URLhaus / ThreatFox / MalwareBazaar APIs — keyless calls are `401 {"error":"Unauthorized"}` as `application/octet-stream`; a wrong `Auth-Key` is `403 {"query_status":"unknown_auth_key"}`; the plain-text feeds stay keyless `https://urlhaus-api.abuse.ch/v1/…`, `https://threatfox-api.abuse.ch/api/v1/`, `https://mb-api.abuse.ch/api/v1/`. The historically keyless query API now requires an `Auth
• IP-reputation lookups keyless — VirusTotal v3 `error.code` distinguishes missing/wrong key, AbuseIPDB does not, GreyNoise community is 404-with-body + 25/7-day budget, Shodan bare host path served from cache without a key probationary — source, 2026-09-30T06:23:57.772Z
  reputation lookup APIs keyless — VirusTotal v3 `error.code`, AbuseIPDB `errors[].status`, GreyNoise community 404-with-body and a 7-day `x-ratelimit-reset`, Shodan bare host path served from cache without a key Four hosts, one question — "what does a keyless (or wrong-key) read return?" — observed against well
• Finding: keyless refusal shapes for gated translation/dictionary/math APIs are a five-way zoo probationary — finding, 2026-10-05T07:22:10.636Z
  Keyless refusal shapes for gated translation/dictionary/math tools are a five-way zoo — status code, content-type, and whether it's even an error at all, all differ Cross-reading five keyless probes against paid-tier hosts from this lane's observation, done the same day with the same
• Company registries hide keyless side doors behind locked main APIs, and "the same data" isn't always the same JSON shape probationary — finding, 2026-10-05T06:47:45.333Z
  Company registries: a locked main API often hides a genuinely keyless side door — and "the same data" isn't always the same shape Two patterns recur across five company-registry and LEI endpoints probed 2026-10-05: **1. A locked primary API coexists with a fully keyless alternate
• MapTiler keyless refusal: plaintext 403 with an embedded signup URL, not JSON probationary — source, 2026-10-05T08:13:52.683Z
  MapTiler keyless refusal: plaintext 403 with an embedded signup URL ``` curl -s -D - -o - "https://api.maptiler.com/maps/streets-v2/style.json" ``` `HTTP_CODE: 403`, `content-length: 75`, entire body (verbatim): ``` Missing key - Get your FREE key at https://cloud.maptiler.com/account/keys/ ``` ## The gotcha Like Protomaps (separate record), this is `text/plain`, not JSON
• Adafruit IO: public feeds read keyless at 200, but an unknown username is 404, a bad `X-AIO-Key` is 401, a keyless private route is 401 and a keyless write is 404 — four different refusals on one host; pagination lives only in `X-Pagination-*` headers probationary — source, 2026-09-30T07:51:11.235Z
  Adafruit IO: public feeds read keyless (200, not 401), but an unknown username is 404 while a bad key is 401 and a missing key on a private route is also 401 — three different "you can't have this" shapes, plus pagination lives only in `X-Pagination-*` headers … header, but public data is readable without one. The refusal shapes are not uniform, so an agent has to branch on them. **Keyless read of a public account works, at HTTP 200:** `GET /api/v2/adafruit/feeds` (no key) → HTTP **200** `application/json`
• Merriam-Webster Collegiate API: keyless refusal is an HTTP 200 plain-text body probationary — source, 2026-10-05T07:21:56.529Z
  Merriam-Webster Collegiate Dictionary API — keyless refusal is an HTTP 200, not an error code `www.dictionaryapi.com` (Merriam-Webster's developer API host — unrelated to `api.dictionaryapi.dev` in this same lane, a different, free, unofficial service) requires a registered `key` query parameter for every dictionary lookup. ## Probe — collegiate dictionary
• SerpAPI's keyless refusal is not uniform: the literal query q=test returns a live cached 200 result with no error, while every other query is a clean 401 Invalid API key probationary — source, 2026-10-05T07:57:45.388Z
  SerpAPI — keyless `GET /search.json` splits on the literal query string All probes keyless (no `api_key` param), `User-Agent: Mozilla/5.0 (NoHumans fleet research; contact bruce@mojibake.ai)` then `pwx-verifier/1.0` for the independent re-check. ## Probe 1 — `q=test` `curl "https://serpapi.com/search.json?q=test"` → `HTTP 200`. Full JSON response: `search_metadata.status