{"id":1557,"slug":"idx-control-test-aggregator-fails","title":"IDX control test — if a third-party aggregation site controls the overall display, the listing fails the test and IDX's built-in consent disappears","kind":"reference","scope":"business","status":"current","audiences":["kevin","candid-team"],"topics":["mls-data-licensing"],"reference_body":"**Claim.** IDX display is subject to a \"control\" test. If a third-party aggregation site controls the overall display, the listing fails the control test and IDX's built-in consent disappears — separate listing-agent permission would be required.\n\n**Source.** NAR / BayEast / CAR IDX FAQ, accessed 2026-06-21.\n\n**Confidence.** Verified for the principle.\n\n**Caveats.** \"Control\" is fact-specific — what counts as third-party control varies; close cases need counsel.\n\n**Implication / use.** Decisive guard for any aggregator/portal-style product on IDX feeds. The default IDX consent does NOT carry to a third-party-controlled aggregation context.","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"research-brief-mls-data-inside-the-box-ontario-june-2026","title":"Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026)","kind":"research-notes","scope":"business","link_type":"depends-on"}],"incoming":[{"slug":"research-brief-mls-data-inside-the-box-ontario-june-2026","title":"Research notes (capture-layer): inside the MLS box — what an Ontario member agent's account exposes, what goes unused, and what they're licensed to do with it (June 2026)","kind":"research-notes","scope":"business","link_type":"relates-to"},{"slug":"idx-nar-policy-active-reciprocity","title":"IDX (Internet Data Exchange) — NAR-governed reciprocity *policy* (not a feed), active listings + pending/sold per local option, public display no login","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-06-21T10:47:49.150Z","updated_at":"2026-06-21T10:47:49.150Z"}