> ## Documentation Index > Fetch the complete documentation index at: https://developers.wachat.net/llms.txt > Use this file to discover all available pages before exploring further. # Create broadcasts > Creates and dispatches a broadcast to contacts or groups using a message or approved template. Use it for one-to-many delivery when you need recipient-level status tracking. ## OpenAPI ````yaml /openapi.json post /broadcasts openapi: 3.1.0 info: title: Wachat API version: v1 description: >- Wachat REST API. Authenticate with a workspace API key: send it as `Authorization: Bearer `. Generate keys in the dashboard under Developers / API. servers: - url: https://crm.wachat.net/api/v1 security: - http: [] tags: - name: Message description: >- Send a single WhatsApp message — text, media (image / video / document / audio) or a location pin — to one number, then read its delivery status or your message history. A file can be attached directly as a multipart `media` field or referenced by a public URL. - name: Template description: >- Create, list and manage your approved WhatsApp templates, and send a template to one number with your own header, body variables and button values. Use this for utility / marketing sends that need a pre-approved template — including one with a PDF / document header (pass the file's public URL as the header, e.g. from the Media endpoint). - name: Media description: >- Upload a file once (multipart / form-data, field name `file`, up to 16 MB) and get back a hosted public URL you can reuse across sends — for example a PDF to use as a document-header on a template, or an image on a message. - name: Contact description: >- Full create / read / update / delete over your contacts and leads, including search by number, tags and custom attributes. - name: ContactGroup description: >- Organise contacts into groups: create groups, list them, and add or remove members — handy for targeting broadcasts and campaigns. - name: Broadcast description: >- Send the same message to many contacts at once and track each broadcast's progress and per-recipient delivery. - name: Campaign description: >- Create, start, pause and monitor drip / marketing campaigns and their recipients. - name: Scheduled description: >- Schedule a WhatsApp send for a future time, list upcoming scheduled messages, and cancel one before it goes out. - name: AutoReply description: >- Manage keyword auto-replies — the automatic responses that fire when an inbound message matches a rule. - name: Flow description: >- Enroll a contact into an automation flow (chatbot) and manage your flows through the API. - name: Device description: >- List the WhatsApp numbers / devices connected to your workspace and check each one's connection status. - name: Webhook description: >- Register and manage webhook endpoints so Wachat POSTs real-time events (message received / sent / delivered / read / failed, plus campaign and contact events) to your server. When you set a signing secret each delivery carries an HMAC-SHA256 signature header you can verify. - name: Deal description: >- Manage sales-pipeline deals — create, list, update and move deals between stages. - name: Conversation description: >- Read your workspace inbox: list chat threads (conversations) and fetch the messages inside a thread. - name: Account description: Read your account details, plan, limits and message-credit usage. paths: /broadcasts: post: tags: - Broadcast summary: Create broadcasts description: >- Creates and dispatches a broadcast to contacts or groups using a message or approved template. Use it for one-to-many delivery when you need recipient-level status tracking. operationId: v1.broadcasts.store requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/StoreBroadcastRequest' responses: '201': description: Resource created successfully. content: application/json: schema: anyOf: - type: object properties: data: type: array items: {} meta: type: object properties: broadcast_ids: anyOf: - type: string - type: array prefixItems: - type: string minItems: 1 maxItems: 1 additionalItems: false devices_count: anyOf: - type: string - type: integer enum: - 1 required: - broadcast_ids - devices_count required: - data - meta - type: object properties: data: type: object properties: broadcast_ids: anyOf: - type: string - type: array items: type: string minItems: 0 maxItems: 0 additionalItems: false devices_count: anyOf: - type: string - type: integer enum: - 1 required: - broadcast_ids - devices_count meta: type: string required: - data - meta '422': $ref: '#/components/responses/ValidationException' description: Request failed. components: schemas: StoreBroadcastRequest: type: object description: >- Create a broadcast — send one template to a list of contacts and/or a contact group. Scramble reads these rules to document the request body. Mirrors the input keys the existing BroadcastsController::store accepts (broadcast_name / template_id / contacts[] / groups[] / device_id / schedule_type+send_date+send_time / timezone), exposed under public-facing names. At least one of `recipients` or `group_id` is required; provide `schedule_at` to schedule for later, omit it to send now. properties: name: type: string description: Broadcast label shown in the dashboard. Required. maxLength: 255 template_id: type: integer description: Approved WaTemplate id to send to every recipient. Required. group_id: type: - integer - 'null' description: Contact-group id — every member is added as a recipient. device_id: type: - integer - 'null' description: >- Sending device id (optional — defaults to the workspace's primary device). schedule_at: type: - string - 'null' description: >- When to send — ISO 8601 / parseable datetime. Omit to send immediately. maxLength: 64 timezone: type: - string - 'null' description: IANA timezone for schedule_at (e.g. Asia/Kolkata). Defaults to UTC. maxLength: 64 recipients: type: - array - 'null' description: Recipient contact ids. Required unless `group_id` is given. items: type: integer required: - name - template_id title: StoreBroadcastRequest responses: ValidationException: description: Validation error content: application/json: schema: type: object properties: message: type: string description: Errors overview. errors: type: object description: A detailed description of each field that failed validation. additionalProperties: type: array items: type: string required: - message - errors securitySchemes: http: type: http scheme: bearer ````