Extensions
List and filter harvested OpenAPI specification extensions.
Every x- specification extension found while harvesting OpenAPI documents across the catalog, with the provenance the OpenAPI Initiative's own registry does not carry: which providers publish it, in how many documents, how many times, where in the document it appears, and what shape the value takes. Filter by free text; sort by occurrences. Free — an extension without an origin is folklore, and provenance behind a paywall helps nobody.
query Parameters
qFree-text query over name and description (and tags where applicable).
sortSort order.
fieldsSparse fieldset — comma-separated property names to return.
page1-based page number.
limitItems per page.
List and filter harvested OpenAPI specification extensions. › Responses
List and filter OpenAPI specification extensions.
Get one OpenAPI specification extension, with its publishers and provenance.
Returns a single extension by key, including the providers that publish it, occurrence and document counts, where in the document it appears, the value shapes observed, and whether API Evangelist is itself the publisher. Check is_api_evangelist before treating a key as provider-originated: some of these are ours. Free.
path Parameters
slugExtension key (e.g. x-mcp-group).
query Parameters
fieldsSparse fieldset — comma-separated property names to return.
Get one OpenAPI specification extension, with its publishers and provenance. › Responses
Get one OpenAPI specification extension.