> ## Documentation Index > Fetch the complete documentation index at: https://docs.orbit.devotel.io/llms.txt > Use this file to discover all available pages before exploring further. # Send an RCS message > Send an RCS Business Messaging message (text, image, standalone rich card, or horizontal carousel of 2-10 rich cards). ## OpenAPI ````yaml /openapi.yaml post /api/v1/messages/rcs openapi: 3.1.0 info: title: Devotel CPaaS API description: Orbit by Devotel — Communications Platform as a Service API version: 1.0.0 contact: name: Devotel url: https://devotel.io email: support@devotel.io license: name: Proprietary servers: - url: https://api.orbit.devotel.io description: Production security: - Bearer: [] - ApiKey: [] tags: - name: Messages description: >- Send and manage messages across all channels (SMS, WhatsApp, RCS, Email, Viber, etc.) - name: Fax description: >- List and track fax (MMS/T.38) transmissions on Telnyx-backed fax numbers (sending flows through the Messaging API) - name: Agents description: AI agent creation, configuration, and execution - name: Voice description: Voice calls, IVR, conferencing, and SIP trunking - name: OnCall description: On-call rotations and escalation policy planning for incident alerting - name: Webhooks description: Webhook endpoint management and delivery logs - name: Numbers description: Phone number search, provisioning, and configuration - name: Brand Identity description: >- Unified cross-channel brand trust posture (10DLC, toll-free, WhatsApp, RCS, branded calling, number KYC) - name: Contacts description: Contact management, segmentation, and lifecycle tracking - name: Campaigns description: Marketing campaign orchestration and analytics - name: Flows description: Automation flow builder and execution engine - name: Templates description: Message template management and approval workflows - name: Settings description: Organization, channel, and user preference settings - name: Verify description: OTP generation and verification across channels - name: Push description: Push notification delivery via FCM and APNs - name: Integrations description: Third-party service connections and OAuth management - name: CDP description: >- Customer Data Platform — activation surface (CRM object sync, streaming destinations, ad-audience activation) - name: Files description: >- Server-to-server media upload, listing, retrieval, and deletion (signed-URL backed) - name: Commerce description: >- Omnichannel conversational-commerce — persistent cart + checkout state machine, channel-agnostic hosted pay-by-link, native WhatsApp checkout, and AP2-style agent payment mandates. - name: Sync description: >- Real-time shared-state primitive (Twilio Sync parity) — Documents, Maps, Lists, and ephemeral Streams, with change events relayed over the /api/v1/ws/sync WebSocket gateway paths: /api/v1/messages/rcs: post: tags: - Messages summary: Send an RCS message description: >- Send an RCS Business Messaging message (text, image, standalone rich card, or horizontal carousel of 2-10 rich cards). requestBody: required: true content: application/json: schema: type: object required: - to properties: to: type: string description: Recipient phone number in E.164 format. from: type: string description: Sender identifier. body: type: string maxLength: 4096 description: >- Plain text message body. Required for text sends; omit when sending a `rich_card` or `rich_card_carousel`. media_url: type: string format: uri webhook_url: type: string format: uri metadata: type: object additionalProperties: type: string description: >- Free-form string metadata. Caller-supplied keys win on conflict with provider flags translated from `rich_card`/`rich_card_carousel`. scheduled_at: type: string format: date-time rich_card: type: object required: - card_content description: >- Standalone rich card payload (Twilio / Verizon parity). Mutually exclusive with `rich_card_carousel`. properties: card_content: type: object required: - title - description properties: title: type: string minLength: 1 maxLength: 200 description: type: string minLength: 1 maxLength: 2000 media: type: object required: - height - content_info properties: height: type: string enum: - SHORT - MEDIUM - TALL content_info: type: object required: - file_url properties: file_url: type: string format: uri thumbnail_url: type: string format: uri suggestions: type: array maxItems: 11 items: type: object description: RCS suggestion chip (reply or action). oneOf: - type: object required: - reply properties: reply: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 - type: object required: - action properties: action: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 open_url: type: object required: - url properties: url: type: string format: uri dial_action: type: object required: - phone_number properties: phone_number: type: string view_location_action: type: object properties: label: type: string maxLength: 100 query: type: string maxLength: 100 lat_long: type: object required: - latitude - longitude properties: latitude: type: number minimum: -90 maximum: 90 longitude: type: number minimum: -180 maximum: 180 suggestions: type: array maxItems: 11 items: type: object description: RCS suggestion chip (reply or action). oneOf: - type: object required: - reply properties: reply: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 - type: object required: - action properties: action: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 open_url: type: object required: - url properties: url: type: string format: uri dial_action: type: object required: - phone_number properties: phone_number: type: string view_location_action: type: object properties: label: type: string maxLength: 100 query: type: string maxLength: 100 lat_long: type: object required: - latitude - longitude properties: latitude: type: number minimum: -90 maximum: 90 longitude: type: number minimum: -180 maximum: 180 description: Message-level chips rendered below the card. card_orientation: type: string enum: - HORIZONTAL - VERTICAL thumbnail_image_alignment: type: string enum: - LEFT - RIGHT description: >- Only honored when `card_orientation=HORIZONTAL`; ignored otherwise (RBM rejects on VERTICAL cards). rich_card_carousel: type: object required: - card_contents description: >- Horizontal carousel of 2-10 rich cards (Twilio / Verizon parity). Single-card carousels render as malformed on Android — use `rich_card` for single cards. properties: card_width: type: string enum: - SMALL - MEDIUM default: MEDIUM card_contents: type: array minItems: 2 maxItems: 10 items: type: object required: - title - description properties: title: type: string minLength: 1 maxLength: 200 description: type: string minLength: 1 maxLength: 2000 media: type: object required: - height - content_info properties: height: type: string enum: - SHORT - MEDIUM - TALL content_info: type: object required: - file_url properties: file_url: type: string format: uri thumbnail_url: type: string format: uri suggestions: type: array maxItems: 11 items: type: object description: RCS suggestion chip (reply or action). oneOf: - type: object required: - reply properties: reply: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 - type: object required: - action properties: action: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 open_url: type: object required: - url properties: url: type: string format: uri dial_action: type: object required: - phone_number properties: phone_number: type: string view_location_action: type: object properties: label: type: string maxLength: 100 query: type: string maxLength: 100 lat_long: type: object required: - latitude - longitude properties: latitude: type: number minimum: -90 maximum: 90 longitude: type: number minimum: -180 maximum: 180 suggestions: type: array maxItems: 11 items: type: object description: RCS suggestion chip (reply or action). oneOf: - type: object required: - reply properties: reply: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 - type: object required: - action properties: action: type: object required: - text properties: text: type: string minLength: 1 maxLength: 25 postback_data: type: string maxLength: 2048 open_url: type: object required: - url properties: url: type: string format: uri dial_action: type: object required: - phone_number properties: phone_number: type: string view_location_action: type: object properties: label: type: string maxLength: 100 query: type: string maxLength: 100 lat_long: type: object required: - latitude - longitude properties: latitude: type: number minimum: -90 maximum: 90 longitude: type: number minimum: -180 maximum: 180 description: Message-level chips rendered below the carousel. responses: '202': description: Message accepted for delivery (rcs) content: application/json: schema: type: object description: Message accepted for delivery (rcs) properties: data: type: object additionalProperties: true properties: id: type: string description: Devotel message id status: type: string description: >- Lifecycle state at acceptance time (queued | scheduled | sent) channel: type: string enum: - rcs from: type: - 'null' - string to: type: - 'null' - string body: type: - 'null' - string price: type: - 'null' - string - number currency: type: - 'null' - string external_id: type: - 'null' - string created_at: type: - 'null' - string format: date-time meta: type: object properties: request_id: type: string description: >- Unique request identifier (also returned in X-Request-Id header) timestamp: type: string format: date-time description: ISO 8601 UTC timestamp of the response '422': description: Default Response content: application/json: schema: type: object properties: error: type: object required: - code - message - status properties: code: type: string description: >- Machine-readable error code (e.g. INVALID_PHONE_NUMBER) message: type: string description: Human-readable error description status: type: integer description: HTTP status code details: type: object additionalProperties: true description: Additional context about the error meta: type: object properties: request_id: type: string timestamp: type: string format: date-time docs_url: type: string format: uri description: Link to relevant error documentation components: securitySchemes: Bearer: type: http scheme: bearer bearerFormat: JWT description: Dashboard JWT token from Clerk ApiKey: type: apiKey name: X-API-Key in: header description: Server-to-server API key (dv_live_sk_*) ````