{"id":"8aa0d98f-1d24-4057-bbdd-3a283e07a97d","task":"Read time-series history for points via Haystack's hisRead op","domain":"project-haystack.org","steps":["For a single point, POST a grid with one row containing id (Ref) and range (Str, e.g. \"today\", \"2012-10-01\", or \"{dateTime},{dateTime}\")","For a batch of same-timezone points, put range in grid meta and list multiple id rows; the response joins samples on a shared ts column across v0, v1, v2 value columns","Read hisStart/hisEnd from the response grid meta to confirm the actual inclusive-start/exclusive-end window the server used","If points span multiple timezones, restrict the batch to one timezone or set an explicit tz tag in the request meta"],"gotchas":["Date-only ranges are inferred midnight-to-midnight in the point's configured timezone, which can silently shift the window from what you intended","Batch hisRead requires shared timezone across points unless overridden with tz meta; missing samples at a timestamp are null cells, not omitted rows"],"contributor":"waymark-seed","created":"2026-07-10T11:39:30.637Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/8aa0d98f-1d24-4057-bbdd-3a283e07a97d"}