> ## Documentation Index > Fetch the complete documentation index at: https://docs.postbreeze.ai/llms.txt > Use this file to discover all available pages before exploring further. # Reply to a comment > Posts a reply to a comment on the original platform. Postbreeze sends the reply using the same account the original comment was made on, then saves the reply onto the comment so you can see the thread in your inbox. If the account's login has expired (`TOKEN_EXPIRED`), you'll have to reconnect it before you can reply — otherwise you'll get a `403`. Replying also marks the comment as read, since you've clearly seen it. The workspace is figured out automatically from the comment — anyone with access to that workspace can reply. ## OpenAPI ````yaml /openapi.json post /comments/{commentId}/reply openapi: 3.0.0 info: title: Postbreeze API description: >- Public REST API for scheduling and managing social posts. Authenticate every request with `Authorization: Bearer pb_live_…`. All endpoints are scoped to a single workspace; an API key issued for workspace A cannot access workspace B. version: 1.0.0 contact: {} servers: - url: http://localhost:4100/api/v1 security: - bearer: [] tags: [] paths: /comments/{commentId}/reply: post: tags: - Comments summary: Reply to a comment description: >- Posts a reply to a comment on the original platform. Postbreeze sends the reply using the same account the original comment was made on, then saves the reply onto the comment so you can see the thread in your inbox. If the account's login has expired (`TOKEN_EXPIRED`), you'll have to reconnect it before you can reply — otherwise you'll get a `403`. Replying also marks the comment as read, since you've clearly seen it. The workspace is figured out automatically from the comment — anyone with access to that workspace can reply. operationId: CommentsV1Controller_reply parameters: - name: commentId required: true in: path description: >- Prefixed cuid of the inbox comment to reply to. Must belong to a workspace the caller has access to. schema: example: cmt_01HZY8N3M2K9R5T8V4P6Q1J0BC type: string requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CommentReplyBodyDto' responses: '201': description: >- The updated comment row, now carrying the `reply` sub-object with the platform-side identifier of the reply Postbreeze posted. content: application/json: schema: type: object properties: id: type: string description: Prefixed cuid identifier of the comment row. platform: type: string enum: - INSTAGRAM - FACEBOOK_PAGE - X - LINKEDIN_PERSON - LINKEDIN_COMPANY - TIKTOK_BUSINESS - TIKTOK_PERSONAL - YOUTUBE - PINTEREST - THREADS - BLUESKY description: Which platform this comment was pulled from. socialAccountId: type: string description: >- Prefixed cuid of the connected channel that owns the post. Matches an `id` from `GET /social-accounts`, so consumers can group inbox rows by channel without a second call. externalCommentId: type: string description: >- Platform-side identifier of the comment itself. Unique per `(socialAccountId, externalCommentId)` — re-running refresh upserts in place rather than creating duplicates. externalParentId: type: string nullable: true description: >- Platform-side parent id when this comment is itself a reply nested inside a thread. Null for top-level comments on the post. externalPostId: type: string description: >- Platform-side identifier of the post the comment belongs to. Stored even for posts that weren't scheduled through Postbreeze, so the inbox can deep-link "View on platform". externalUrl: type: string nullable: true description: >- Server-built deep link to the comment in the platform's native UI. Null when the platform doesn't expose a stable per-comment URL (some Instagram comments fall in this bucket). author: description: >- Author snapshot captured at fetch time. Frozen — platform-side renames after fetch won't be reflected here. allOf: - type: object properties: handle: type: string nullable: true description: >- The author's user-facing handle on the platform (e.g. `@brand`). Null when the platform doesn't expose a handle for the responder. displayName: type: string nullable: true description: >- Human-readable display name. Null when unavailable. avatarUrl: type: string nullable: true description: Profile avatar URL when the platform provides one. body: type: string description: Plain-text body of the comment. createdAt: type: string format: date-time description: When the platform says the comment was posted. readAt: type: string format: date-time nullable: true description: >- When a user marked the comment read in the Postbreeze inbox. Null while the row is still unread. Filter on `unread=true` to see only rows where this is null. reply: nullable: true description: >- The reply Postbreeze posted on this comment, if any. Null when the comment hasn't been replied to through Postbreeze. Replies posted natively on the platform are not surfaced here. type: object allOf: - type: object properties: body: type: string description: Plain-text body of the reply that was sent. externalId: type: string description: >- Platform-side identifier of the reply Postbreeze posted. Useful for cross-referencing in the platform's native UI. createdAt: type: string format: date-time description: When Postbreeze posted the reply. '400': description: Validation error content: application/json: schema: type: object properties: statusCode: type: integer example: 400 code: type: string example: VALIDATION_FAILED message: type: string requestId: type: string '401': description: Missing or invalid API key content: application/json: schema: type: object properties: statusCode: type: integer example: 401 message: type: string example: Unauthorized requestId: type: string components: schemas: CommentReplyBodyDto: type: object properties: text: type: string description: >- Plain-text reply to post on the platform. Trimmed before send. Each platform strips formatting on submission, so Markdown / HTML is silently dropped. example: Thanks for watching! 🙏 required: - text securitySchemes: bearer: scheme: bearer bearerFormat: API key type: http description: Your Postbreeze API key ````