{"kind":"insufficient-history","endpoint":{"endpoint_id":"ep_60d53b8194b601b9","label":"M1","resource":"https://mpp.browserbase.com/browser/session/create","probe_url":"https://mpp.browserbase.com/browser/session/create","method":"POST","rail":"mpp","operator":"Browserbase","self":false,"probe_policy":"active","policy_reason":"no-request-body: this endpoint declares a body-bearing method and we hold no request body for it. The catalogue row carries no input example to derive one from (ADR-039 J5), and inventing one would publish a guess at the operator API as a grade of them. The prober therefore records `Not probed` every tick - our gap, dated, on our side of the line (build 7 B2).","succeeds":null,"succeeds_statement":null},"current":{"observed_at":"2026-08-24T10:01:30.046Z","outcome":"Answered, no quote","sub_codes":["malformed-402","mpp-unparseable"],"rule_id":"R15","confidence":"high","http_status":402,"latency_total_ms":752,"quote":null,"quote_fingerprint":null,"response_schema_fingerprint":"25eb4874cd1771a5","capture_sha256":"3bc68499b92a0ddb6a856a144d320bd4cfe4263485f02e0e04d9f78652f743c9"},"held":{"observations":75,"first_observed_at":"2026-08-21T08:01:16.885Z","last_observed_at":"2026-08-24T10:01:30.046Z","days_held":3.0835},"archive":{"first_observed_at":"2026-08-21T08:01:16.885Z","last_observed_at":"2026-08-24T10:01:30.046Z","days_held":3.0835,"observations":75,"basis":"Every observation we hold of this endpoint, at ANY depth - not the window you asked for and not the tier you paid for. A free caller and a full-archive caller see the same number here, so our depth can be measured before it is bought (ADR-011). `Not probed` rows are excluded: those are our absence, never an observation of anyone."},"requested_days":7,"statement":"probe402 holds 75 observation(s) spanning 3.08 day(s), which cannot support a 7-day summary. The current observation above is the full extent of what we can honestly say.","satisfiable_from":"2026-08-28T08:01:16.885Z","answer_version":"0.1.0","series_breaks":[{"break_id":"brk_rubricversion_20260821T110054165Z_4_5","kind":"rubric-version","at":"2026-08-21T11:00:54.165Z","from":"2026-08-21T11:00:54.165Z","to":"2026-08-21T11:00:54.165Z","endpoint_ids":"all","detail":"rubric_version changed 4 -> 5; observations either side were produced by different instruments","ref":"rubric_version:4->5"},{"break_id":"brk_seedversion_20260826T100027562Z_202608203_202608262","kind":"seed-version","at":"2026-08-26T10:00:27.562Z","from":"2026-08-26T10:00:27.562Z","to":"2026-08-26T10:00:27.562Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-20.3 -> 2026-08-26.2; observations either side were produced by different instruments","ref":"seed_version:2026-08-20.3->2026-08-26.2"},{"break_id":"brk_seedversion_20260827T070132090Z_202608262_202608272","kind":"seed-version","at":"2026-08-27T07:01:32.090Z","from":"2026-08-27T07:01:32.090Z","to":"2026-08-27T07:01:32.090Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-26.2 -> 2026-08-27.2; observations either side were produced by different instruments","ref":"seed_version:2026-08-26.2->2026-08-27.2"},{"break_id":"brk_seedversion_20260827T080133173Z_202608272_202608273","kind":"seed-version","at":"2026-08-27T08:01:33.173Z","from":"2026-08-27T08:01:33.173Z","to":"2026-08-27T08:01:33.173Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-27.2 -> 2026-08-27.3; observations either side were produced by different instruments","ref":"seed_version:2026-08-27.2->2026-08-27.3"},{"break_id":"brk_seedversion_20260827T130050012Z_202608273_202608274","kind":"seed-version","at":"2026-08-27T13:00:50.012Z","from":"2026-08-27T13:00:50.012Z","to":"2026-08-27T13:00:50.012Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-27.3 -> 2026-08-27.4; observations either side were produced by different instruments","ref":"seed_version:2026-08-27.3->2026-08-27.4"},{"break_id":"brk_seedversion_20260827T180110355Z_202608274_202608275","kind":"seed-version","at":"2026-08-27T18:01:10.355Z","from":"2026-08-27T18:01:10.355Z","to":"2026-08-27T18:01:10.355Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-27.4 -> 2026-08-27.5; observations either side were produced by different instruments","ref":"seed_version:2026-08-27.4->2026-08-27.5"}],"tier":{"name":"free","days":7,"price_usd":0},"window":{"from":"2026-08-20T19:46:41.315Z","to":"2026-08-27T19:46:41.315Z"},"non_affiliation":"probe402 is not affiliated with, endorsed by, or compensated by any endpoint or operator it grades. Every claim here is a dated observation from our vantage, never a statement about what an endpoint is.","method_url":"https://probe402.com/method","read_integrity":{"observation_files_read":156,"unreadable_files":0,"unreadable_keys":[],"archive_depth_memo":{"status":"used","reason":null,"through_key":"dataset/observations/2026-08-26/t20260826T230000Z.jsonl","files_memoized":136},"statement":"Every observation file this answer opened was read (156 file(s)). No row is missing from this answer because we could not read it. A further 136 file(s) did not need reading: the archive-depth memo already holds their fold, checked against the archive's own listing through dataset/observations/2026-08-26/t20260826T230000Z.jsonl."}}