action mercure_get_well_known_mercure_subscriptions_topic_subscriber { label: "Active subscription for the given topic and subscriber" provider: mercure method: GET path: "/.well-known/mercure/subscriptions/{topic}/{subscriber}" encoding: json input: { type: "object" properties: { subscriber: { type: "string" } topic: { type: "string" } } required: ["subscriber", "topic"] additionalProperties: false } output: { type: "object" additionalProperties: true } }