Data & schema semantics · Type system

x-stainless-variantName

`x-stainless-variantName` appears on schema objects and properties. Its value is a string. Used by 2 providers across 2 OpenAPI documents. It sits in the `x-stainless-` namespace, so its meaning is defined by stainless tooling rather than by OpenAPI. Observed values include `Mixed`, `payment_order_update_request_with_id`, `expected_payment_update_request_with_id`, `transaction_update_request_with_id`. Consistent with type system — this is inferred from where the key appears and what it carries, not from any published definition.

Data & schema semantics 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.
9 occurrences
2 documents
2 providers
vendor-named

Where it appears

Location in the documentOccurrences
schema 9

What its value looks like

Value shapeOccurrences
string9

Observed values

Sampled from the specifications, most frequent first.

Mixedpayment_order_update_request_with_idexpected_payment_update_request_with_idtransaction_update_request_with_idledger_transaction_update_request_with_id

Providers publishing it

All 2.

imagekitmodern-treasury

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.