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Microsoft 365

25 provider profiles 25 rated 208 APIs Parent provider page →

Microsoft 365 publishes its API surface across 25 provider profiles indexed on the APIs.io network, of which 25 carry a rating. The rated members span 43.9 points, from 64.1 down to 20.2.

Its highest-rated surfaces are Microsoft Graph, Microsoft Outlook, Microsoft Word, Microsoft Planner, Microsoft Exchange.

43.9points of spread across 25 rated surfaces

Best: 64.1 · Weakest: 20.2 · 0 exemplar, 6 strong, 7 developing

31.6 thin blended estate rating across 25 rated profiles

Composite average 38.7, agent-readiness average 20.9. 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.

Strong 6 Solid coverage with minor gaps

Microsoft Graph71 APIs64.1 Microsoft Outlook1 API63.3 Microsoft Word21 APIs58.5 Microsoft Planner1 API57.8 Microsoft Exchange6 APIs56.4 Microsoft Office 3651 API55.6

Developing 7 Usable, with meaningful gaps to close

Microsoft Teams11 APIs54.0 Microsoft Office10 APIs51.8 Microsoft 365 Copilot1 API51.1 Microsoft Excel11 APIs49.2 Microsoft Visio API1 API49.2 Microsoft SharePoint15 APIs48.0 Microsoft Project21 APIs43.0

Thin 6 Limited public surface area

Microsoft OneNote4 APIs39.2 Microsoft OneDrive5 APIs37.1 Microsoft to Do4 APIs37.1 Microsoft Access8 APIs35.3 Microsoft Yammer1 API34.3 Microsoft Bookings7 APIs33.0

Emerging 6 Early or largely undocumented

Microsoft Forms1 API25.4 Microsoft Loop1 API22.5 Microsoft Stream1 API22.5 Microsoft Viva3 APIs20.7 Microsoft Whiteboard1 API20.6 Microsoft Sway1 API20.2

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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