Description
Link to problem area:
https://spec.matrix.org/v1.12/client-server-api/#get_matrixclientv3thirdpartyuserprotocol, https://spec.matrix.org/v1.12/application-service-api/#get_matrixappv1thirdpartyuserprotocol, and others.
Issue
Certain APIs are specified by the OpenAPI definitions as taking query parameters of type object. You might wonder how an object can be passed as a query parameter. The relevant part of the OpenAPI spec is the definition of the Parameter Object; in particular the rules for serialization of the parameter. The relevant OpenAPI fields are style (which is specified to default to form for query parameters) and explode (which defaults to true when style is form). The style examples table then gives an example serialization of R=100&G=200&B=150 for an object containing keys R, G and B.
The spec text doesn't make that at all clear. The parameter table is just plain misleading.