> ## 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.

# Download an invoice PDF

> Redirects (302) to a short-lived, pre-signed URL for the invoice PDF (falling back to the hosted invoice page for drafts without a PDF yet). Follow the `Location` header to fetch the document. Returns 404 when the invoice does not belong to the caller's organization and 409 when no downloadable PDF exists yet. Requires an owner or admin role.



## OpenAPI

````yaml /openapi.yaml get /api/v1/billing/invoices/{id}/download
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/billing/invoices/{id}/download:
    get:
      tags:
        - Billing
      summary: Download an invoice PDF
      description: >-
        Redirects (302) to a short-lived, pre-signed URL for the invoice PDF
        (falling back to the hosted invoice page for drafts without a PDF yet).
        Follow the `Location` header to fetch the document. Returns 404 when the
        invoice does not belong to the caller's organization and 409 when no
        downloadable PDF exists yet. Requires an owner or admin role.
      parameters:
        - schema:
            type: string
          in: path
          name: id
          required: true
      responses:
        '302':
          description: Redirect to the pre-signed invoice PDF (or hosted invoice) URL.
          headers:
            Location:
              schema:
                type: string
                format: uri
              description: Short-lived pre-signed URL of the invoice PDF or hosted page.
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_*)

````