action illumidesk_billing_invoices_read { label: "Get an invoice" provider: illumidesk method: GET path: "/v1/{namespace}/billing/invoices/{id}/" encoding: json input: { type: "object" properties: { id: { type: "string" } namespace: { type: "string" } } required: ["id", "namespace"] additionalProperties: false } output: { type: "object" additionalProperties: true } }