Performance & quality
29 distinct extensions were invented to do this job. Each one is a provider deciding OpenAPI would not carry something and building their own way through. Where a job has many names and few uses each, nobody won — the problem was solved privately, over and over.
29 extensions
10950 occurrences
5 vendor-named
The extensions
| Extension | What it appears to do | Uses | Providers |
|---|---|---|---|
| x-validate | `x-validate` appears on schema objects and properties. Its value is a string. Used by a single provider across 12 OpenAPI documents. Observed values include `null`. Consistent with performance & quali | 3505 | 1 |
| x-logErrorCode | `x-logErrorCode` appears on response objects. Its value is an integer. Used by 2 providers across 21 OpenAPI documents. Observed values include `401`, `500`, `404`, `429`. Consistent with performance | 2018 | 2 |
| x-errorCodes | `x-errorCodes` appears on response objects. Its value is a list. Used by a single provider across 3 OpenAPI documents. Consistent with performance & quality — this is inferred from where the key appea | 1860 | 1 |
|
x-ms-error-code
vendor |
`x-ms-error-code` appears on header objects. Its value is a structured object. Used by 2 providers across 61 OpenAPI documents. It sits in the `x-ms-` namespace, so its meaning is defined by ms toolin | 1141 | 2 |
| x-latency-category | `x-latency-category` appears on operations. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `responsive`, `interactive`, `background`. Consistent wi | 1038 | 1 |
| x-cfPlanAvailability | `x-cfPlanAvailability` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where | 480 | 1 |
| x-availability | `x-availability` appears on operations. Its value is a string. Used by 5 providers across 6 OpenAPI documents. Observed values include `High`, `Limited`, `Not deployed to Production or MT1`, `MemberPr | 369 | 5 |
|
x-fern-availability
vendor |
`x-fern-availability` appears on operations. Its value is a string. Used by a single provider across 7 OpenAPI documents. It sits in the `x-fern-` namespace, so its meaning is defined by fern tooling | 186 | 1 |
| x-unstable | `x-unstable` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where the key a | 92 | 1 |
| x-idempotency-key | `x-idempotency-key` appears on parameter objects. Its value is a structured object. Used by 29 providers across 84 OpenAPI documents. Consistent with performance & quality — this is inferred from wher | 84 | 29 |
| x-monitor | `x-monitor` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where the key appears | 49 | 1 |
| x-402 | `x-402` appears in the info block. Its value is a structured object. Used by 2 providers across 27 OpenAPI documents. Consistent with performance & quality — this is inferred from where the key appear | 27 | 2 |
|
x-portone-unstable
vendor |
`x-portone-unstable` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. It sits in the `x-portone-` namespace, so its meaning is defined by porton | 27 | 1 |
| x-data-quality | `x-data-quality` appears on schema objects and properties. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where | 26 | 1 |
| x-400 | `x-400` appears on response objects. Its value is a string. Used by 4 providers across 4 OpenAPI documents. Observed values include `User not opt-in:`, `Invalid configuration:`, `Reference No Not foun | 11 | 4 |
| x-422 | `x-422` appears on response objects. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `Already processed request ID:`, `Request Id does not exist:`, | 11 | 1 |
| x-400-apiversion | `x-400-apiversion` appears on response objects. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from whe | 6 | 1 |
| x-korbit-error-codes | `x-korbit-error-codes` appears on operations. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where the key appe | 4 | 1 |
| x-500 | `x-500` appears on response objects. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `fail to sync epg file to s3:`, `Please turn off the clone sync | 3 | 1 |
| x-open-validate | `x-open-validate` appears on schema objects and properties and on operations. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is | 3 | 1 |
| x-ably-errorcode | `x-ably-errorcode` appears on header objects. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where | 2 | 1 |
| x-403 | `x-403` appears on operations. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where the key appear | 1 | 1 |
| x-api-availability | `x-api-availability` appears in the info block. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from whe | 1 | 1 |
| x-dd-extra-monitors | `x-dd-extra-monitors` appears at the root of the document. Its value is a list. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where | 1 | 1 |
| x-error-codes | `x-error-codes` appears at the root of the document. Its value is a structured object. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred fro | 1 | 1 |
| x-idempotent | `x-idempotent` appears on operations. Its value is a boolean flag. Used by a single provider across 1 OpenAPI document. Consistent with performance & quality — this is inferred from where the key appe | 1 | 1 |
|
x-ms-response-latency-in-milliseconds
vendor |
`x-ms-response-latency-in-milliseconds` appears on header objects. Its value is a structured object. Used by a single provider across 1 OpenAPI document. It sits in the `x-ms-` namespace, so its meani | 1 | 1 |
| x-sla | `x-sla` appears in the info block. Its value is a string. Used by a single provider across 1 OpenAPI document. Observed values include `https://api.hergertsynthora.com/sla`. Consistent with performanc | 1 | 1 |
|
x-square-generic-error-codes
vendor |
`x-square-generic-error-codes` appears in the info block. Its value is a list. Used by a single provider across 1 OpenAPI document. It sits in the `x-square-` namespace, so its meaning is defined by s | 1 | 1 |