---
title: "Mark message as seen"
method: PUT
path: "/api/messages/sendSeen"
tags: ["messages"]
---

# Mark message as seen

`PUT /api/messages/sendSeen`

Mark message as seen

## Request body

- object
  - `chatId` string, required — Chat ID (phone number or formatted ID)

## Response `200`

Successful response

- boolean

## Other responses

- `400` — Validation error
- `500` — Internal server error

---

[API](https://skmtc.net/open-wa/apis/open-wa-api.md) · [All operations](https://skmtc.net/open-wa/apis/open-wa-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/open-wa/open-wa-api/versions/2f344d03d2a9/schema)