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

# Mark Read

> Send a read receipt for the most recent inbound message in a conversation.

Sends a WhatsApp read receipt (the blue double-tick) for the latest inbound
message in the conversation. This is useful when a human or external system
has taken over a conversation and wants to acknowledge new messages without
sending a reply yet.

If the conversation has no inbound messages to acknowledge, the call is a
no-op and the conversation is returned unchanged.

<Note>
  Read receipts only work for messages that arrived within WhatsApp's
  acknowledgement window. Very old messages may be silently ignored by Meta.
</Note>


## OpenAPI

````yaml api-reference/openapi.json POST /api/v1/conversations/{id}/read/
openapi: 3.0.3
info:
  title: Wassist API
  version: 1.0.0
  description: API for building WhatsApp AI agents
servers:
  - url: https://alpha-plagiocephalic-darrell.ngrok-free.dev
    description: Development
security: []
tags:
  - name: Agents
    description: Create and manage AI agents
  - name: Conversations
    description: Chat conversations and messages
  - name: WhatsApp
    description: WhatsApp Business account management
  - name: Contacts
    description: Contact management
  - name: Integrations
    description: Third-party integrations
paths:
  /api/v1/conversations/{id}/read/:
    post:
      tags:
        - api
      description: Mark the last user message as read
      operationId: api_v1_conversations_read_create
      parameters:
        - in: path
          name: id
          schema:
            type: string
          required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Conversation'
          description: ''
      security:
        - ApiKeyAuth: []
components:
  schemas:
    Conversation:
      type: object
      properties:
        id:
          type: string
          format: uuid
          readOnly: true
        contact:
          $ref: '#/components/schemas/ConversationContact'
        activeAgent:
          type: string
          readOnly: true
        whatsappNumber:
          type: string
          readOnly: true
        chatWindowRemainingTime:
          type: string
          readOnly: true
        lastMessage:
          type: string
          readOnly: true
        isHumanTakeover:
          type: string
          readOnly: true
        active:
          type: string
          readOnly: true
        routing:
          type: string
          readOnly: true
        webhookId:
          type: string
          readOnly: true
        routingOverride:
          type: string
          readOnly: true
      required:
        - active
        - activeAgent
        - chatWindowRemainingTime
        - contact
        - id
        - isHumanTakeover
        - lastMessage
        - routing
        - routingOverride
        - webhookId
        - whatsappNumber
    ConversationContact:
      type: object
      properties:
        phoneNumber:
          type: string
        name:
          type: string
          nullable: true
      required:
        - name
        - phoneNumber
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key authentication. Pass your API key in the X-API-Key header.

````