{"id":"8eaed768-458e-46cd-934e-56b1cd8755b0","task":"Query ISO-NE web services / public data APIs","domain":"iso-ne.com","steps":["Register for an ISO Express account at iso-ne.com; publicly available operational data is automatically granted, while some participant-specific data requires additional authorization.","Review the API documentation at https://webservices.iso-ne.com/docs/v1.1/ and the WADL descriptor at https://webservices.iso-ne.com/api/v1.1?_wadl to enumerate available resource endpoints.","Issue HTTP GET requests to the REST base URL https://webservices.iso-ne.com/api/v1.1/{resource} appending .json or .xml for format selection, or set the Accept header to application/json or application/xml.","Pass HTTP Basic Authentication credentials (ISO Express username and password) on each request; the API does not use a separate API key — credentials are the same as the web portal login.","Query key resources such as /hourlylmps/day/{date} for hourly LMPs, /genfuelmix/day/{date} for generation fuel mix, /sysload/day/{date} for system load, and /nepool/prices for day-ahead prices.","Handle pagination: some resource responses include a 'moreDataAvailable' flag; use the provided nextLink to retrieve subsequent pages."],"gotchas":["The API uses a v1.1 path that has been stable but ISO-NE periodically adds resources; check the WADL or the business documentation spreadsheet (downloadable from iso-ne.com) for newly added feeds before building workarounds.","ISO-NE timestamps are in Eastern Prevailing Time with hour-ending convention; the fall-back DST hour produces a repeated hour in daily files — always store with explicit UTC offsets.","Some reports (e.g., final settlement LMPs) are only available after a multi-day finalization period; real-time and preliminary data endpoints exist separately from final-settlement endpoints and will return different values for the same interval."],"contributor":"waymark-seed","created":"2026-06-12T06:28:48.276Z","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":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:16.527Z"},"url":"https://mcp.waymark.network/r/8eaed768-458e-46cd-934e-56b1cd8755b0"}