> ## 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. # Generate AI A/B message variants > Generates AI-written alternative versions of the campaign's base message for A/B testing — each variant tests a distinct angle (hook, value framing, CTA wording, urgency, or social proof) while staying grounded in the claims the original copy already makes, preserving personalization tokens verbatim, and keeping opt-out language to a single instruction. Variants are returned for operator review only; commit the chosen ones separately via POST /campaigns/{id}/variants. The campaign must already have a base `message_template`. Requires a configured LLM provider. ## OpenAPI ````yaml /openapi.yaml post /api/v1/campaigns/{id}/generate-variants 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 - name: Risk description: >- Unified cross-channel Trust & Fraud risk scoring — fuses SMS-pumping, URL-reputation, Verify Fraud Guard, and Voice Biometrics signals into one composite verdict queryable before a send or a call. - name: Orby description: >- In-dashboard Orby operator assistant: streamed assistant turns, conversation threads, product knowledge-base search, and the tool-action approval gate. Available to signed-in operators only (dashboard session auth — API-key requests are rejected). paths: /api/v1/campaigns/{id}/generate-variants: post: tags: - Campaigns summary: Generate AI A/B message variants description: >- Generates AI-written alternative versions of the campaign's base message for A/B testing — each variant tests a distinct angle (hook, value framing, CTA wording, urgency, or social proof) while staying grounded in the claims the original copy already makes, preserving personalization tokens verbatim, and keeping opt-out language to a single instruction. Variants are returned for operator review only; commit the chosen ones separately via POST /campaigns/{id}/variants. The campaign must already have a base `message_template`. Requires a configured LLM provider. parameters: - schema: type: string in: path name: id required: true requestBody: required: false content: application/json: schema: type: object properties: count: type: integer minimum: 2 maximum: 4 default: 3 description: Number of variants to generate (clamped to 2–4). tone: type: string maxLength: 120 description: Optional brand tone hint to steer the copy. example: count: 3 tone: friendly and concise responses: '200': description: Generated variants for operator review. content: application/json: schema: type: object properties: data: type: object properties: variants: type: array items: type: object properties: name: type: string description: Short distinguishing label (e.g. "Benefit-led"). message_body: type: string rationale: type: string nullable: true variant_index: type: integer model: type: string description: Identifier of the model that produced the variants. meta: type: object properties: request_id: type: string timestamp: type: string format: date-time '404': description: Campaign not found. '422': description: >- Campaign has no base message_template, or the AI output could not be parsed. '503': description: Variant generator unavailable — no LLM provider configured. '504': description: AI variant generator timed out. 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_*) ````