> ## Documentation Index > Fetch the complete documentation index at: https://docs.tryordinal.com/llms.txt > Use this file to discover all available pages before exploring further. # Create slack boost > Create a slack boost for a post. When the post publishes, Ordinal sends a notification to the selected Slack channel. Each post can have at most one slack boost. Use a `slackWebhookId` from a [connected Slack marketing boost channel](/integrations/slack). ## OpenAPI ````yaml /api/openapi.json post /slack-boosts openapi: 3.1.0 info: title: Ordinal API version: 1.0.0 description: API to create and manage Ordinal workspaces, posts, profiles, and analytics servers: - url: https://app.tryordinal.com/api/v1 description: Production server security: - bearerAuth: [] tags: - name: Analytics description: Social media analytics data - name: Approvals description: Post approval workflows - name: Comments description: >- Post comments for team collaboration. Supports @mentions using the format @[Display Name](userId). - name: Engagements description: Auto-engagements for posts (likes, comments, reposts) - name: Invites description: Workspace invitations for adding new users - name: Labels description: Labels for organizing posts - name: Instagram description: Instagram utilities for location search and tagging - name: LinkedIn description: LinkedIn utilities for profile lookups, tagging, and mentions - name: Posts description: Create and manage posts - name: Profiles description: List connected social profiles - name: Slack Boosts description: >- List connected Slack channels (webhooks), then create and manage slack boosts so teams get notified in Slack when posts publish. Requires Slack connected with marketing boost channels. - name: Subscribers description: Post subscribers for notifications - name: File Uploads description: >- Upload files from URLs for use in posts. Supports images (JPEG, PNG, GIF, WebP) up to 10 MB and videos (MP4, MOV) up to 350 MB. - name: Ideas description: >- Create and manage content ideas. Ideas are draft posts without scheduled dates that can be converted to calendar posts. - name: Inline Comments description: >- Text-anchored comments on specific post content. Read-only API for retrieving inline comments across channels. - name: Users description: Workspace users - name: Webhooks description: >- Create, list, get, update, and delete webhooks to receive real-time event notifications - name: Workspaces description: Workspace information paths: /slack-boosts: post: tags: - Slack Boosts summary: Create slack boost description: >- Create a slack boost for a post. When the post publishes, Ordinal sends a notification to the selected Slack channel. Each post can have at most one slack boost. Use a `slackWebhookId` from a [connected Slack marketing boost channel](/integrations/slack). operationId: slack-boosts-create requestBody: required: true content: application/json: schema: type: object required: - postId - slackWebhookId properties: postId: type: string format: uuid description: The ID of the post to attach the slack boost to slackWebhookId: type: string format: uuid description: >- The ID of the Slack webhook (channel) to send notifications to copy: type: string description: Optional custom message included in the Slack notification example: postId: 550e8400-e29b-41d4-a716-446655440300 slackWebhookId: 550e8400-e29b-41d4-a716-446655440920 copy: New post — please like and share! responses: '200': description: Slack boost created content: application/json: schema: type: object properties: slackBoost: $ref: '#/components/schemas/SlackBoost' example: slackBoost: id: 550e8400-e29b-41d4-a716-446655440910 copy: New post — please like and share! isAutoCreated: false postId: 550e8400-e29b-41d4-a716-446655440300 slackWebhook: id: 550e8400-e29b-41d4-a716-446655440920 channelName: marketing-boost teamName: Acme Corp createdAt: '2026-01-15T10:30:00.000Z' updatedAt: '2026-01-15T10:30:00.000Z' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' components: schemas: SlackBoost: type: object description: A slack boost sends a Slack notification when its post publishes properties: id: type: string format: uuid copy: type: string nullable: true description: Optional custom message in the Slack notification isAutoCreated: type: boolean description: True when the boost was added automatically via channel auto-boost postId: type: string format: uuid slackWebhook: $ref: '#/components/schemas/SlackWebhookSummary' createdAt: type: string format: date-time updatedAt: type: string format: date-time SlackWebhookSummary: type: object description: Slack channel (webhook) targeted by a slack boost properties: id: type: string format: uuid channelName: type: string nullable: true teamName: type: string nullable: true ValidationError: type: object properties: code: type: string message: type: string data: type: object properties: errors: type: object additionalProperties: type: array items: type: string Error: type: object properties: code: type: string message: type: string responses: BadRequest: description: Bad Request - Invalid input parameters content: application/json: schema: $ref: '#/components/schemas/ValidationError' example: code: BAD_REQUEST message: Bad Request data: errors: publishAt: - Invalid date format status: - Invalid enum value Unauthorized: description: Unauthorized - Missing or invalid API key content: application/json: schema: $ref: '#/components/schemas/Error' example: code: UNAUTHORIZED message: Invalid or unauthorized API key NotFound: description: Not Found - Resource does not exist content: application/json: schema: $ref: '#/components/schemas/Error' example: code: NOT_FOUND message: Post not found or does not belong to this workspace securitySchemes: bearerAuth: type: http scheme: bearer description: >- API key authentication. Generate an API key from your workspace settings. ````