x-ibm-oauth-provider
`x-ibm-oauth-provider` appears in the document. Its value is a string. Used by 2 providers across 17 OpenAPI documents. It sits in the `x-ibm-` namespace, so its meaning is defined by ibm tooling rather than by OpenAPI. Observed values include `fhir-server-pkce-api-provider`, `v3-internal-auth-oauth2-app-token`, `externalpingfederate`. Consistent with security — this is inferred from where the key appears and what it carries, not from any published definition.
Where it appears
| Location in the document | Occurrences | |
|---|---|---|
| other | 20 | |
| securityScheme | 4 |
What its value looks like
| Value shape | Occurrences |
|---|---|
| string | 24 |
Observed values
Sampled from the specifications, most frequent first.
Providers publishing it
All 2.
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 security job.