> ## 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. # Export an ad-hoc audience as CSV > Resolve an ad-hoc audience — an unsaved segment filter AST, the same shape the segment builder and `POST /api/v1/segments/auto-suggest` produce — live against the tenant's contacts and download the matched rows as an RFC-4180 CSV attachment, without first persisting or materialising a segment. PII columns (phone, email) honour the caller's role + reveal context. Requires the `contacts:write` scope (owner / admin / developer). Hard-capped at 50,000 rows; a truncated export sets the `X-Export-Truncated: true` response header. The saved-segment equivalent is `GET /api/v1/contacts/segments/{id}/export.csv`. ## OpenAPI ````yaml /openapi.yaml post /api/v1/segments/export.csv 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/segments/export.csv: post: tags: - Segments summary: Export an ad-hoc audience as CSV description: >- Resolve an ad-hoc audience — an unsaved segment filter AST, the same shape the segment builder and `POST /api/v1/segments/auto-suggest` produce — live against the tenant's contacts and download the matched rows as an RFC-4180 CSV attachment, without first persisting or materialising a segment. PII columns (phone, email) honour the caller's role + reveal context. Requires the `contacts:write` scope (owner / admin / developer). Hard-capped at 50,000 rows; a truncated export sets the `X-Export-Truncated: true` response header. The saved-segment equivalent is `GET /api/v1/contacts/segments/{id}/export.csv`. requestBody: content: application/json: schema: type: object required: - filters properties: filters: type: object description: >- The audience definition — the same FilterAst the segment builder and auto-suggest speak (a single condition or a nested AND/OR group). Validated server-side against the field allowlist + depth cap. additionalProperties: true limit: type: integer minimum: 1 maximum: 50000 description: >- Optional row cap below the 50,000-row hard ceiling (e.g. for a quick sample). Clamped server-side. filename: type: string maxLength: 120 description: >- Optional filename stem for the download. Sanitised so it cannot break the Content-Disposition header. responses: '200': description: >- RFC-4180 CSV download (`Content-Disposition: attachment`). One row per matched contact, with a header row: contact_id, first_name, last_name, email, phone, country_code, lifecycle_stage, tags, created_at. headers: X-Export-Truncated: schema: type: string enum: - 'true' description: >- Present and set to `true` when the export hit the row cap and rows were dropped. content: text/csv: schema: type: string description: One flat row per matched contact, with a header row. 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_*) ````