openapi: 3.1.0 info: title: Viam Billing Arm Tunneling 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: Tunneling description: TCP tunneling through the machine. paths: /viam.robot.v1.RobotService/Tunnel: post: summary: Viam Tunnel description: Tunnel TCP traffic through viam-server (bidirectional stream). operationId: tunnel tags: - Tunneling requestBody: required: true content: application/json: schema: type: object responses: '200': description: Successful response. /viam.robot.v1.RobotService/ListTunnels: post: summary: Viam List Tunnels description: List active tunnels. operationId: listTunnels tags: - Tunneling requestBody: required: true content: application/json: schema: type: object responses: '200': description: Successful response. components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: key description: Viam API key.