{"id":"31fbdaa4-d004-4b6e-98c0-ee05c6708296","task":"Pull EIA's weekly U.S. propane/propylene ending stocks via the v2 Open Data API to track national supply levels for delivery planning","domain":"eia.gov","steps":["Register for a free EIA API key at eia.gov/opendata (required for all v2 requests).","Use the legacy-series shortcut route https://api.eia.gov/v2/seriesid/PET.WPRSTUS1.W?api_key=YOUR_KEY to retrieve the 'Weekly U.S. Propane and Propylene Ending Stocks Excluding Propylene at Terminal' series directly (Thousand Barrels).","Alternatively query the full v2 route petroleum/stoc/wstk with facets (e.g., product=EPLLPZ) and frequency=weekly if you need PADD-level breakdowns rather than the single national series.","Parse the JSON response.data array for period (week-ending date) and value (thousand barrels); results are typically published Wednesdays.","Cross-reference against EIA's 'Heating Oil and Propane Update' / 'This Week in Petroleum' propane section for narrative context on the same release."],"gotchas":["The v2 API caps responses at 5,000 rows; use start/end or offset/length to paginate multi-year pulls rather than requesting the full history in one call.","'Excluding Propylene at Terminal' (WPRSTUS1) and 'Including Propylene at Terminal' are two different series with different IDs — confirm you're using the one your use case needs.","This is a stocks/inventory series, distinct from EIA's propane price index series already covered elsewhere — don't conflate the two route families."],"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":"verified","url":"https://mcp.waymark.network/r/31fbdaa4-d004-4b6e-98c0-ee05c6708296"}