Documentation & DX

x-ms-summary

`x-ms-summary` appears on schema objects and properties. Its value is a string. Used by 2 providers across 7 OpenAPI documents. It sits in the `x-ms-` namespace, so its meaning is defined by ms tooling rather than by OpenAPI. Observed values include `Information about a user.`, `Information about a newly created user.`, `|+`, `A complex element containing the number and type of each object referencing the `. Consistent with documentation & dx — this is inferred from where the key appears and what it carries, not from any published definition.

Documentation & DX x-ms- namespace derived description
How this description was produced. It is assembled from what was measured in the corpus — where this key appears in a document, what shape its value takes, the values observed, and how many providers use it. It is not taken from a published definition, because for most extensions none exists. Read it as evidence, not as a specification. If you own this extension and want it described properly, tell us.
853 occurrences
7 documents
2 providers
vendor-named

Where it appears

Location in the documentOccurrences
schema 852
response 1

What its value looks like

Value shapeOccurrences
string808
object45

Observed values

Sampled from the specifications, most frequent first.

Information about a user.Information about a newly created user.|+A complex element containing the number and type of each object referencing the Contains a list of each type of object and the number of objects of that type reContains information about a seller decision type.Contains information about a task list.Contains details about a user.

Providers publishing it

All 2.

docusignkriya

Why this is not in OpenAPI

Extensions exist because a provider needed something the specification would not carry. Most of what they hold is not the API contract at all — it is operational metadata about the contract: documentation, lifecycle, policy, provenance, and now agents. That metadata is usually better placed alongside the contract, in an Overlay or an APIs.json index, than crammed inside it. See everything else doing the documentation & dx job.