---
title: "Send message to ticket"
method: POST
path: "/v1/tickets/{id}/messages"
tags: ["tickets"]
---

# Send message to ticket

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

Sends a reply within the ticket's current active thread. Requires a token with write access.

## Path parameters

- `id` string, required — Ticket id.

## Query parameters

- `workspace_id` string — Optional workspace override. If omitted, Conduit resolves the ticket's workspace automatically.

## Request body

- object — Request body for sending a message into an existing ticket thread. Attachments are uploaded first via `POST /v1/attachments/upload-url`; pass the PUT response `storageId` as `attachment_id`. Email supports file attachments. SMS and WhatsApp can deliver media only when the configured sender/provider supports the file type and size.
  - `body` string
  - `attachments` object[]
    - `attachment_id` string, required — Convex storage id returned by the signed upload PUT response. This is the attachment id used by message and note APIs.
    - `name` string, required — Original filename to display.
    - `content_type` string, required — MIME content type supplied when the file was uploaded.
    - `content_length` integer, required — File size in bytes.

## Response `201`

Ticket message sent

- object — Result returned after a message is accepted for delivery.
  - `data` object, required
    - `id` string, nullable, required
    - `workspace_id` string, required
    - `conversation_id` string, required
    - `ticket_id` string, nullable
    - `channel` string, nullable, required
    - `status` 'sent', required

## Other responses

- `400` — Invalid request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not found
- `409` — Ticket cannot be replied to
- `429` — Rate limit exceeded

---

[API](https://skmtc.dev/conduit/apis/conduit-api.md) · [All operations](https://skmtc.dev/conduit/apis/conduit-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/conduit/conduit-api/revisions/3ad7e17f96ad/schema)