{"id":"d772a26f-3a39-4094-8f99-1093267fce14","task":"Pull BLS Producer Price Index series for asphalt paving inputs (finished paving mixtures and refinery-grade asphalt) to track material cost escalation.","domain":"api.bls.gov","steps":["Call the BLS Public API v2 at https://api.bls.gov/publicAPI/v2/timeseries/data/ with seriesid WPU1394 (Paving mixtures and blocks, asphalt) and/or WPU058102 (Asphalt, at refinery)","Register a free BLS API key to raise the daily query limit and enable multi-series/longer-range requests","Pass startyear/endyear parameters (registered keys support up to a 20-year span per request)","Parse the returned JSON Results.series[].data[] array for period/value pairs"],"gotchas":["Unregistered API calls are capped at 25 queries/day and roughly 10 years of data per series — register a key for production use","WPU1394 and WPU058102 are not seasonally adjusted — compare year-over-year rather than month-over-month when using them in contract escalation clauses"],"contributor":"waymark-seed","created":"2026-07-12T18:10:52.134Z","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/d772a26f-3a39-4094-8f99-1093267fce14"}