SDK & code generation

x-stainless-param

`x-stainless-param` appears on parameter objects and on operations. Its value is a string. Used by 7 providers across 11 OpenAPI documents. It sits in the `x-stainless-` namespace, so its meaning is defined by stainless tooling rather than by OpenAPI. Observed values include `betas`, `token_id`, `timeout_seconds`, `path_function_name`. Consistent with sdk & code generation — this is inferred from where the key appears and what it carries, not from any published definition.

SDK & code generation x-stainless- 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.
57 occurrences
11 documents
7 providers
vendor-named

Where it appears

Location in the documentOccurrences
parameter 27
operation 26
schema 4

What its value looks like

Value shapeOccurrences
string57

Observed values

Sampled from the specifications, most frequent first.

betastoken_idtimeout_secondspath_function_namejurisdictionstorage_class

Providers publishing it

All 7.

bemcloudflare-r2courieropenaiparallelparallel-aitelnyx

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 sdk & code generation job.