> ## 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. # Bulk add or remove segment membership > Add a selected audience to a static segment, or remove them from it, in a single request. Target the audience with either an explicit `contact_ids` array or a `filters` AST — provide exactly one. Membership changes emit the same contact.entered_segment / contact.exited_segment webhooks as the manual path. Large selections are queued and return a job id. ## OpenAPI ````yaml /openapi.yaml post /api/v1/contacts/bulk/segment 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/contacts/bulk/segment: post: tags: - Contacts summary: Bulk add or remove segment membership description: >- Add a selected audience to a static segment, or remove them from it, in a single request. Target the audience with either an explicit `contact_ids` array or a `filters` AST — provide exactly one. Membership changes emit the same contact.entered_segment / contact.exited_segment webhooks as the manual path. Large selections are queued and return a job id. requestBody: required: true content: application/json: schema: type: object properties: contact_ids: type: array items: type: string description: >- Explicit contact ids to target (max 50,000). Provide this OR `filters`. filters: type: object additionalProperties: true description: >- Segment filter AST resolving the audience server-side. Provide this OR `contact_ids`. segment_id: type: string description: The target segment to add contacts to or remove them from. action: type: string enum: - add - remove description: Whether to add the audience to the segment or remove it. required: - segment_id - action example: contact_ids: - contact_01HZX8Y7QJK4M segment_id: seg_01HZX8VIP action: add responses: '200': description: Membership updated inline. content: application/json: schema: type: object properties: data: type: object properties: queued: type: boolean affected: type: integer total: type: integer meta: type: object properties: request_id: type: string timestamp: type: string format: date-time example: data: queued: false affected: 1 total: 1 meta: request_id: req_01HZX9ABCDEF timestamp: '2026-02-02T12:00:00.000Z' '202': description: >- Large selection accepted and queued; poll the returned job id for progress. content: application/json: schema: type: object properties: data: type: object properties: queued: type: boolean job_id: type: string total: type: integer meta: type: object properties: request_id: type: string timestamp: type: string format: date-time example: data: queued: true job_id: bulkop_01HZX9QJK4M total: 12000 meta: request_id: req_01HZX9ABCDEF timestamp: '2026-02-02T12:00:00.000Z' 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_*) ````