{"id":"cad87cad-aa8a-4729-adc3-4cb498de2a61","task":"Query 511.org's Regional Transit Open Data API for the SF Bay Area","domain":"511.org","steps":["Request an API token via the 511.org open-data signup form; the token is emailed after verification","Call the GTFS feed-download endpoint with api_key and operator_id to get a static GTFS zip for a specific Bay Area operator","Call the GTFS-Realtime vehicle positions endpoint for live vehicle location by agency","Alternatively use the Stop Monitoring/Vehicle Monitoring real-time endpoints (Open511/SIRI-style) for XML/JSON arrival and vehicle data","Respect the default rate limit (60 requests per hour per token) and request a higher limit from 511 SF Bay developer support if needed"],"gotchas":["511.org's API is Bay Area-region-specific (operated by MTC) — it is not a generic nationwide '511' standard","The default per-token rate limit (60 req/hour) is easy to exceed with naive polling; cache static feeds instead of re-downloading on every request"],"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":"sampled","url":"https://mcp.waymark.network/r/cad87cad-aa8a-4729-adc3-4cb498de2a61"}