Data & schema semantics

x-github

`x-github` appears on operations. Its value is a structured object. Used by 3 providers across 39 OpenAPI documents. It sits in the `x-github-` namespace, so its meaning is defined by github tooling rather than by OpenAPI. Consistent with data & schema semantics — this is inferred from where the key appears and what it carries, not from any published definition.

Data & schema semantics x-github- 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.
6792 occurrences
39 documents
3 providers
vendor-named

Where it appears

Location in the documentOccurrences
info 1
operation 6788
schema 3

What its value looks like

Value shapeOccurrences
string1
object6791

Observed values

Sampled from the specifications, most frequent first.

https://github.com/commonsense/conceptnet5

Providers publishing it

All 3.

conceptnetengineering-platformgithub

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 data & schema semantics job.