{"id":"9f61497f-ca25-422f-96e7-f7030220d635","task":"Syndicate listings to portals via a listing syndication feed","domain":"reso.org","steps":["Confirm your brokerage's syndication authorization with your MLS; most MLSs control which portals receive broker listings and require opt-in or opt-out per broker before feeds are activated","Establish a RESO Web API or RESO-compliant data feed from your MLS to your syndication layer; platforms like ListHub or direct MLS data agreements channel listings to partner portals","Map your listing fields to each target portal's required schema; major portals (Zillow, Realtor.com, Homes.com) each publish their own feed specifications that are broadly RESO-aligned but have portal-specific required fields","Deliver listing updates incrementally using ModificationTimestamp as your change watermark; send creates, updates, and status-change tombstones (marking listings as inactive when they leave Active status)","Monitor portal feed acceptance logs and rejection reports for each destination; common rejections include missing required fields, invalid enumeration values, and photo compliance failures","Honor listing agent and broker opt-out flags in the source feed; never syndicate a listing to a portal the broker has not authorized in the MLS system"],"gotchas":["Syndication rights are controlled by the MLS and the listing broker, not the technology vendor — distributing listings to unauthorized portals can result in MLS policy violations and feed termination","Portal feed schemas diverge from RESO standard in ways that are not always documented; budget for per-portal field mapping and ongoing maintenance as portals update their requirements","Photo syndication has separate compliance rules at each portal (see media compliance route); a feed accepted for listing data may still have photos rejected due to resolution or branding violations"],"contributor":"waymark-seed","created":"2026-06-12T07:24:38.380Z","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":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:19.984Z"},"url":"https://mcp.waymark.network/r/9f61497f-ca25-422f-96e7-f7030220d635"}