---
title: "Append message (participant/admin)"
method: POST
path: "/api/v1/tickets/{id}/messages"
tags: ["support"]
---

# Append message (participant/admin)

`POST /api/v1/tickets/{id}/messages`

## Request

- Base URL: `https://amplerun-api.spiry.org`
- URL: `https://amplerun-api.spiry.org/api/v1/tickets/{id}/messages`
- Auth: HTTP bearer

The opener, the rental's host, or an admin (a support reply) may post to an OPEN case; anyone else gets 403 and a closed case 409.

## Path parameters

- `id` string, uuid, required

## Headers

- `Idempotency-Key` string, uuid, required

## Request body

- object
  - `text` string, required

## Response `201`

Message appended.

## Other responses

- `default`: Error envelope. 401 unauthenticated, 403/404 forbidden, 409 conflict, 422 invalid input, 429 rate limited (code UNAVAILABLE, retryable:true, no Retry-After header), 503 unavailable money/provider state with retryable:true.

---

[API](https://skmtc.dev/amplerun/apis/amplerun-business-api.md) · [All operations](https://skmtc.dev/amplerun/apis/amplerun-business-api/llms.txt) · [OpenAPI document](https://skmtc.dev/amplerun/apis/amplerun-business-api/revisions/40944687fa52?raw)