openapi: 3.1.0 info: title: Viam Billing Arm Audio Out API description: 'REST/JSON transcoding of the Viam BillingService gRPC API. Retrieve current-month usage, invoice summaries, invoice PDFs, billing tiers, and the location-level billing organization assignment used by Viam''s "build a robotics business" features. Canonical contract: https://github.com/viamrobotics/api/blob/main/proto/viam/app/v1/billing.proto ' version: '2026.05' contact: name: Viam Support url: https://www.viam.com/contact servers: - url: https://app.viam.com description: Viam production cloud. security: - ApiKeyAuth: [] tags: - name: Audio Out description: Audio playback devices. paths: /viam.component.audioout.v1.AudioOutService/Play: post: summary: Viam Audio Out Play description: Play an audio payload on an output device. operationId: audioOutPlay tags: - Audio Out requestBody: required: true content: application/json: schema: type: object required: - name - audio properties: name: type: string audio: type: string format: byte responses: '200': description: Successful response. components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: key description: Viam API key.