---
title: "Send a message"
method: POST
path: "/api/v1/messages/"
tags: ["messages"]
---

# Send a message

`POST /api/v1/messages/`

Send a message to a participant or another researcher

## Headers

- `Authorization` string, required

## Request body

- SendMessage
  - `recipient_id` string, required — Recipient user's id
  - `body` string, required — Message Body. Text is sanitised for safe storage and display.
  - `study_id` string, required — This study is the reason for this message

## Response `204`

The message has been sent

- object

## Other responses

- `400` — Error

---

[API](https://skmtc.net/prolific/apis/api-reference.md) · [All operations](https://skmtc.net/prolific/apis/api-reference/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/prolific/api-reference/versions/dc6f073a9827/schema)