{"kind":"insufficient-history","endpoint":{"endpoint_id":"ep_73dab1a27ee97d0a","label":"stableemail.dev POST /api/subdomain/inbox/messages","resource":"https://stableemail.dev/api/subdomain/inbox/messages","probe_url":"https://stableemail.dev/api/subdomain/inbox/messages","method":"POST","rail":"mpp","operator":"stableemail.dev","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.","probe_class":"challenge-only","probe_class_statement":"Challenge-only: an unpaid, empty request under our identifying user-agent. It grades the payment wall — alive or not, and the quoted price where one parsed — and nothing past it. This endpoint's handler has never been executed by our instrument.","succeeds":null,"succeeds_statement":null},"current":{"observation_id":"obs_t20260901T084500Z-043","tick_id":"t20260901T084500Z","observed_at":"2026-09-01T08:45:43.748Z","outcome":"Quoted","sub_codes":[],"rule_id":"R14a","confidence":"definitive","http_status":402,"latency_total_ms":371,"quote":{"rail":"x402","x402_version":2,"scheme":"exact","network_caip2":"eip155:8453","network_native":"eip155:8453","amount_atomic":"1000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xdb5aa553feeb2c3e3d03e8360b36fb0f7e480671","max_timeout_s":300,"archived_not_published":["envelope_extensions","extensions","extra"]},"quote_fingerprint":"00391d2fee84b643","response_schema_fingerprint":null,"capture_sha256":"df8a25e817a4dba6e7f13ca79104b078603b19604d762d53d75b46dd82f54f96"},"held":{"observations":1,"first_observed_at":"2026-09-01T08:45:43.748Z","last_observed_at":"2026-09-01T08:45:43.748Z","days_held":0},"archive":{"first_observed_at":"2026-09-01T08:45:43.748Z","last_observed_at":"2026-09-01T08:45:43.748Z","days_held":0,"observations":1,"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."},"paid_verification":{"last_paid_at":null,"basis":"No paid execution has been performed by our instrument against this endpoint. Paid verification begins with the paid-delivery audit, which has not yet run."},"requested_days":7,"statement":"probe402 holds 1 observation(s) spanning 0.00 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":"2026-09-08T08:45:43.748Z","answer_version":"0.1.0","series_breaks":[],"tier":{"name":"free","days":7,"price_usd":0},"window":{"from":"2026-08-25T20:32:41.833Z","to":"2026-09-01T20:32:41.833Z"},"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":4,"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":"used","reason":null,"through_key":"dataset/observations/2026-09-01/t20260901T193000Z.jsonl","covers_from":"2026-08-22T09:30:00.000Z","rows_supplied":1},"statement":"Every observation file this answer opened was read (4 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 1 observation(s) of this endpoint recorded up to dataset/observations/2026-09-01/t20260901T193000Z.jsonl came from its own window projection, complete from 2026-08-22T09:30:00.000Z and verified against its own hash; only the files written after that point were opened."}}