action ably_get_metadata_of_all_channels { label: "Enumerate all active channels of the application" description: "Enumerate all active channels of the application" provider: ably method: GET path: "/channels" encoding: json input: { type: "object" properties: { by: { type: "string" enum: ["value", "id"] } limit: { type: "integer" } prefix: { type: "string" } } additionalProperties: false } output: { type: "object" additionalProperties: true } }