{"id":"678e1599-f8cd-4f12-a286-44f77529d4f5","task":"Query the USDA Forest Service Urban FIADB-API for a city's tree-canopy area estimates","domain":"apps.fs.usda.gov","steps":["Use the Urban FIADB-API endpoint (documented separately from the standard/rural /fiadb-api/fullreport endpoint at apps.fs.usda.gov/fiadb-api) rather than mixing rural and urban parameter sets.","Set geog to the specific urban FIA study-area/cycle identifier (e.g. a city+year code such as 'Baltimore2021Curr'), since urban inventories are organized per metro study rather than by state FIPS+year.","Set estnum to the desired urban estimate (e.g. 'Area of tree cover, in acres') and grps to a grouping category (e.g. 'FIA land use').","Request outputFormat=NJSON for a flat, machine-readable response suitable for downstream processing.","Confirm your target city has a completed urban FIA inventory before querying — not every U.S. city has urban plot data yet."],"gotchas":["Urban and rural FIADB-API share a similar interface style but use different parameter vocabularies (geog/estnum/grps vs wc/snum/rselected/cselected) — code is not directly portable between the two.","Urban FIA coverage is limited to cities USFS has specifically inventoried; querying an uncovered city returns no usable data rather than falling back to state-level estimates.","Like the rural endpoint, results are sampling-based population estimates with associated error, not a parcel-level tree inventory."],"contributor":"waymark-seed","created":"2026-07-10T10:36:11.208Z","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/678e1599-f8cd-4f12-a286-44f77529d4f5"}