> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usereplier.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Send replies to confirmed previous comments

> Sends the automation's replies to the comments in a preview. Pass its preview_token; if the comments changed since, the request is refused with PREVIEW_CHANGED. Accepted replies go out in the background: check the automation's activity for the outcome.

Needs an API key with write access.



## OpenAPI

````yaml /api-reference/openapi.json post /v1/workspaces/{workspace_id}/automations/{automation_id}/backfill
openapi: 3.1.0
info:
  title: Replier API
  version: '1'
servers:
  - url: https://api.usereplier.com
security:
  - apiKey: []
paths:
  /v1/workspaces/{workspace_id}/automations/{automation_id}/backfill:
    post:
      tags:
        - Automations
      summary: Send replies to confirmed previous comments
      description: >-
        Sends the automation's replies to the comments in a preview. Pass its
        preview_token; if the comments changed since, the request is refused
        with PREVIEW_CHANGED. Accepted replies go out in the background: check
        the automation's activity for the outcome.


        Needs an API key with write access.
      operationId: run_backfill
      parameters:
        - name: workspace_id
          in: path
          required: true
          description: Workspace ID returned by `GET /v1/workspaces`
          schema:
            type: string
            format: uuid
            pattern: >-
              ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            pattern: >-
              ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
        - name: Idempotency-Key
          in: header
          required: true
          description: >-
            A new value for each operation, and the same one when you retry, so
            the request runs once.
          schema:
            type: string
            minLength: 1
            maxLength: 128
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                target_id:
                  description: >-
                    Optional target ID from `GET
                    /v1/workspaces/{workspace_id}/automations/{automation_id}`
                  type: string
                  format: uuid
                  pattern: >-
                    ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
                preview_token:
                  type: string
                  pattern: ^[a-f0-9]{64}$
              required:
                - preview_token
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  workspace:
                    type: object
                    properties:
                      id:
                        type: string
                        format: uuid
                        pattern: >-
                          ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
                      name:
                        type: string
                      kind:
                        type: string
                        enum:
                          - personal
                          - agency
                      role:
                        type: string
                        enum:
                          - owner
                          - admin
                          - member
                    required:
                      - id
                      - name
                      - kind
                      - role
                  automation_id:
                    type: string
                    format: uuid
                    pattern: >-
                      ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
                  queued_count:
                    type: integer
                    minimum: 0
                    maximum: 9007199254740991
                  skipped_count:
                    type: integer
                    minimum: 0
                    maximum: 9007199254740991
                  failed_count:
                    type: integer
                    minimum: 0
                    maximum: 9007199254740991
                required:
                  - workspace
                  - automation_id
                  - queued_count
                  - skipped_count
                  - failed_count
        default:
          $ref: '#/components/responses/Error'
components:
  responses:
    Error:
      description: Refused
      content:
        application/json:
          schema:
            type: object
            required:
              - error
            properties:
              error:
                type: object
                required:
                  - code
                  - message
                properties:
                  code:
                    type: string
                    description: >-
                      Why the request was refused, such as AUTOMATION_NOT_FOUND
                      or VERSION_CONFLICT. Other fields beside it give details.
                  message:
                    type: string
                    description: The same reason, in English.
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      description: A Replier API key (rpl_...).

````

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