Constellation Data Labs Docs changeloghttps://docs.cdatalabs.com/changelog/API and documentation changesData Dictionary 2.1 is now the default Listings referencehttps://docs.cdatalabs.com/changelog/#2026-11-11-data-dictionary-2-1-is-now-the-default-listings-reference2026-11-11-data-dictionary-2-1-is-now-the-default-listings-referenceWed, 11 Nov 2026 00:00:00 +0000Listings APIThe Listings API docs now describe RESO Data Dictionary 2.1. The Data Dictionary 1.7 reference stays available for existing integrations, and the Version menu switches between them on the same section.Clearer token caching ruleshttps://docs.cdatalabs.com/changelog/#2026-11-11-clearer-token-caching-rules2026-11-11-clearer-token-caching-rulesWed, 11 Nov 2026 00:00:00 +0000Listings APIThe Authentication section now explains that API Gateway caches the authorization result for one hour, so re-authenticating within that hour returns the same token and does not reset its 24 hour expiry.Delete History endpointshttps://docs.cdatalabs.com/changelog/#2026-10-21-delete-history-endpoints2026-10-21-delete-history-endpointsWed, 21 Oct 2026 00:00:00 +0000Property Data · ODataNew endpoints list records removed from the Assessor, Deed, Mortgage, Assignment, Release, Pre-Foreclosure, Base Properties, Mortgage Property Aggregate, Sales and Transfer, and Loan data sets, with a dictionary for each.History expansions on base propertieshttps://docs.cdatalabs.com/changelog/#2026-09-29-history-expansions-on-base-properties2026-09-29-history-expansions-on-base-propertiesTue, 29 Sep 2026 00:00:00 +0000Property Data · GraphQLBase property queries can now expand historicalEstimate, taxHistory, salesAndTransferHistory and mortgageHistory.Delete and flat file detailshttps://docs.cdatalabs.com/changelog/#2026-09-29-delete-and-flat-file-details2026-09-29-delete-and-flat-file-detailsTue, 29 Sep 2026 00:00:00 +0000Property Data · ODataThe Property Data docs now cover how deletes are delivered and what the flat file exports contain.Points of Interest and Transit Data removedhttps://docs.cdatalabs.com/changelog/#2026-09-10-points-of-interest-and-transit-data-removed2026-09-10-points-of-interest-and-transit-data-removedThu, 10 Sep 2026 00:00:00 +0000Property Data · ODataThe Points of Interest and Transit Data sections were removed from the Property Data documentation.Polygon searchhttps://docs.cdatalabs.com/changelog/#2026-08-31-polygon-search2026-08-31-polygon-searchMon, 31 Aug 2026 00:00:00 +0000Property Data · GraphQLPass a top-level polygon with a WKT POLYGON string of longitude and latitude pairs to return properties that intersect the shape.Connect an AI client over MCPhttps://docs.cdatalabs.com/changelog/#2026-08-11-connect-an-ai-client-over-mcp2026-08-11-connect-an-ai-client-over-mcpTue, 11 Aug 2026 00:00:00 +0000MCPNew guide for pointing Claude, ChatGPT, Cursor and automation tools at the BaseProperties and Listings MCP servers, using the client ID and secret you already have.Authorization header required on every requesthttps://docs.cdatalabs.com/changelog/#2026-07-14-authorization-header-required-on-every-request2026-07-14-authorization-header-required-on-every-requestTue, 14 Jul 2026 00:00:00 +0000Property Data · ODataThe API is stateless. Requests without an Authorization: Bearer header are rejected with 401 Unauthorized, even after earlier successful calls.request-trace-id header required for mediahttps://docs.cdatalabs.com/changelog/#2026-06-09-request-trace-id-header-required-for-media2026-06-09-request-trace-id-header-required-for-mediaTue, 09 Jun 2026 00:00:00 +0000Listings APIAll media requests must include a request-trace-id header set to your client ID.Census geography on base propertieshttps://docs.cdatalabs.com/changelog/#2026-05-08-census-geography-on-base-properties2026-05-08-census-geography-on-base-propertiesFri, 08 May 2026 00:00:00 +0000Property Data · GraphQLBase property queries can now return census administrative geography such as county or parish.Schools, school districts and RESO listings in GraphQLhttps://docs.cdatalabs.com/changelog/#2026-04-29-schools-school-districts-and-reso-listings-in-graphql2026-04-29-schools-school-districts-and-reso-listings-in-graphqlWed, 29 Apr 2026 00:00:00 +0000Property Data · GraphQLThe Property Data API (GraphQL) now documents resoProperties, schools and school districts alongside base properties.Mortgage Property Aggregatehttps://docs.cdatalabs.com/changelog/#2026-04-09-mortgage-property-aggregate2026-04-09-mortgage-property-aggregateThu, 09 Apr 2026 00:00:00 +0000Property Data · ODataA new Mortgage Property Aggregate entity and dictionary, with its own delete history.