Data & schema semantics

x-accepts

`x-accepts` appears on operations. Its value is a string. Used by 7 providers across 10 OpenAPI documents. Observed values include `application/json`. 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 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.
378 occurrences
10 documents
7 providers
purpose-named

Where it appears

Location in the documentOccurrences
operation 378

What its value looks like

Value shapeOccurrences
string202
array176

Observed values

Sampled from the specifications, most frequent first.

application/json

Providers publishing it

All 7.

avalarabvnkkanmonprecisely-apissage-hrsnapyugabytedb

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.