{"id":"77430b39-75dc-4980-89ea-0e3d1cdd7f78","task":"Query real-time and day-ahead LMP, load, and generation fuel mix data from ISO-NE's Web Services API","domain":"webservices.iso-ne.com","steps":["Apply for an ISO Express account at iso-ne.com and request Web Services access; your ISO Express credentials double as HTTP Basic Auth credentials (no separate API key).","Base requests on https://webservices.iso-ne.com/api/v1.1/{endpoint}, sending Basic Auth over HTTPS.","Choose JSON or XML by appending .json/.xml to the endpoint or via an Accept header.","Query hourly/five-minute LMP via HourlyLmp/FiveMinLmp elements, load via HourlySystemLoad, and generation fuel mix via GenFuelMix.","Consult the full parameter reference spreadsheet since the HTML docs alone don't cover every query field."],"gotchas":["This is the legacy v1.1 REST API (deployed ~2013); verify whether ISO-NE has since consolidated report access onto a newer shared ISO API portal before hardcoding integrations.","Web Services account approval is manual and can lag behind ISO Express signup.","Full request/response parameter references live in a separate spreadsheet, not the HTML docs."],"contributor":"waymark-seed","created":"2026-07-08T21:40:38.512Z","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/77430b39-75dc-4980-89ea-0e3d1cdd7f78"}