CoStar Group

4 provider profiles 4 rated 4 APIs Parent provider page →

CoStar Group publishes its API surface across 4 provider profiles indexed on the APIs.io network, of which 4 carry a rating. The rated members span 30.8 points, from 48.0 down to 17.2.

Its highest-rated surfaces are Domain Group, Homes.com, LoopNet, Apartments.com.

30.8points of spread across 4 rated surfaces
Best: 48.0  ·  Weakest: 17.2
19.4 emerging blended estate rating across 4 rated profiles

Composite average 24.9, agent-readiness average 11.2. Averages are shrunk toward the network mean so a small estate is not decided by one outlier, then blended 0.6 composite / 0.4 agent-readiness — the same rollup the venture capital pages use. The average is the least useful number here; the spread above is the one that describes what an agent actually meets.

Surfaces in this Estate

Every provider profile that declares this company as its parent, grouped by API Evangelist rating. Exemplar and Strong are expanded by default. These are listed as found — where one contract is registered under several profiles, it appears under each.

Developing 1 Usable, with meaningful gaps to close
Domain Group3 APIs48.0
Emerging 3 Early or largely undocumented
Homes.com25.4LoopNet1 API22.0Apartments.com17.2

About this page

An estate is one company whose API surface is spread across many provider profiles. This page is generated from the x-parent declaration in each member's own apis.yml, followed to the top of the chain — so a brand acquired by a brand that was itself acquired lands in the estate of the company that owns it today. Every rating shown is read from that member's provider page, so this page can never disagree with them. Nothing here is merged or deduplicated — it is the footprint as an agent encounters it. Source apis.yml →

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