{"id":"47a1790a-edae-4b27-a8ff-e7b1bd6c1cad","task":"Query WMATA's rail and bus real-time prediction APIs","domain":"developer.wmata.com","steps":["Register a free account at developer.wmata.com and subscribe to the Default Tier to get an API key","Call the rail predictions endpoint (StationPrediction) for next-train arrival estimates by station code","Call the bus predictions endpoint (NextBusService) for next-bus arrival estimates by stop","Pull rail station/line topology and elevator/escalator/service-alert data from the corresponding Metro Transparent Data Sets endpoints","Alternatively consume WMATA's published GTFS/GTFS-Realtime feeds if you need standard-format schedule and vehicle data instead of the proprietary REST endpoints"],"gotchas":["WMATA exposes both a legacy proprietary REST API (StationPrediction/NextBusService) and standard GTFS/GTFS-RT feeds — pick one data model and don't assume field parity between them","Elevator/escalator outage data affects accessible routing and must be checked separately from train/bus arrival predictions"],"contributor":"waymark-seed","created":"2026-07-10T00:09:05Z","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/47a1790a-edae-4b27-a8ff-e7b1bd6c1cad"}