{"kind":"insufficient-history","endpoint":{"endpoint_id":"ep_31c74d0609baf5d0","label":"api.nansen.ai POST /api/v1/perp-leaderboard","resource":"https://api.nansen.ai/api/v1/perp-leaderboard","probe_url":"https://api.nansen.ai/api/v1/perp-leaderboard","method":"POST","rail":"x402","operator":"nansen.ai","self":false,"probe_policy":"daily","policy_reason":null,"cadence":"daily","cadence_statement":"Probed once a day, at an hour this endpoint keeps, so a reading is at most a day old and this record supports day-resolution survival and price-change — never intra-day health.","succeeds":null,"succeeds_statement":null},"current":{"observed_at":"2026-08-31T10:02:36.316Z","outcome":"Quoted","sub_codes":[],"rule_id":"R14c","confidence":"definitive","http_status":402,"latency_total_ms":64,"quote":{"rail":"x402","x402_version":2,"scheme":"exact","network_caip2":"eip155:8453","network_native":"eip155:8453","amount_atomic":"50000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f","max_timeout_s":300,"archived_not_published":["envelope_extensions","extensions","extra"]},"quote_fingerprint":"ac2492ba5f97d5b5","response_schema_fingerprint":"09b54bd630cb920b","capture_sha256":"2c80c4019ed650efa3c42ad0b0bb4f2d2a313f2520036fba08c27a608b8641ab"},"held":{"observations":3,"first_observed_at":"2026-08-29T10:03:01.559Z","last_observed_at":"2026-08-31T10:02:36.316Z","days_held":1.9997},"archive":{"first_observed_at":"2026-08-29T10:03:01.559Z","last_observed_at":"2026-08-31T10:02:36.316Z","days_held":1.9997,"observations":3,"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 3 observation(s) spanning 2.00 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":"2026-09-05T10:03:01.559Z","answer_version":"0.1.0","series_breaks":[{"break_id":"brk_seedversion_20260831T100236316Z_202608283_202608312","kind":"seed-version","at":"2026-08-31T10:02:36.316Z","from":"2026-08-31T10:02:36.316Z","to":"2026-08-31T10:02:36.316Z","endpoint_ids":"all","detail":"seed_version changed 2026-08-28.3 -> 2026-08-31.2; observations either side were produced by different instruments","ref":"seed_version:2026-08-28.3->2026-08-31.2"}],"tier":{"name":"free","days":7,"price_usd":0},"window":{"from":"2026-08-25T05:23:16.219Z","to":"2026-09-01T05:23:16.219Z"},"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":275,"unreadable_files":0,"unreadable_keys":[],"archive_depth_memo":{"status":"used","reason":null,"through_key":"dataset/observations/2026-08-31/t20260831T234500Z.jsonl","files_memoized":293},"window_projection":{"status":"absent","reason":"endpoint ep_31c74d0609baf5d0 is in id bucket 2 and the projection has rebuilt 1 of 16; the backfill reaches it in 2 more COMPLETED collector pass(es), and until then this answer is the full walk. The last pass to complete was t20260831T144500Z at 2026-08-31T14:45:00.000Z","through_key":"dataset/observations/2026-08-31/t20260831T144500Z.jsonl","covers_from":null,"rows_supplied":0},"statement":"Every observation file this answer opened was read (275 file(s)). No row is missing from this answer because we could not read it. A further 293 file(s) did not need reading: the archive-depth memo already holds their fold, checked against the archive's own listing through dataset/observations/2026-08-31/t20260831T234500Z.jsonl. The window above was walked file by file (window projection absent: endpoint ep_31c74d0609baf5d0 is in id bucket 2 and the projection has rebuilt 1 of 16; the backfill reaches it in 2 more COMPLETED collector pass(es), and until then this answer is the full walk. The last pass to complete was t20260831T144500Z at 2026-08-31T14:45:00.000Z), which is the unaccelerated read and never a shorter one."}}