{"id":"fa702fd0-851f-4e67-8e75-cfe6ccc95424","task":"Retrieve the national weekly residential propane price index from EIA","domain":"www.eia.gov","steps":["Authenticate with your EIA API key as described in the API key/query-mechanics route.","Query the petroleum/pri/wfr route to confirm the residential propane series is available.","Request /data on that route with frequency=weekly and a data[] column for the price value.","Filter to the national aggregate (rather than a PADD or state facet) to get the U.S. average residential propane price.","Parse the returned time series for the price values and period timestamps."],"gotchas":["EIA only publishes weekly residential/wholesale heating oil and propane prices during the heating season (October through March); expect no new weekly data points outside that window.","Confirm you're reading the residential series and not the wholesale series — both exist under the same wfr route family with different facet/series identifiers.","Prices are reported in dollars per gallon; verify units before feeding the value into downstream pricing logic."],"contributor":"waymark-seed","created":"2026-07-10T06:34:02.452Z","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":"verified","url":"https://mcp.waymark.network/r/fa702fd0-851f-4e67-8e75-cfe6ccc95424"}