---
title: "Send a voice note to a LinkedIn chat from a public audio URL (.mp3/.m4a/.ogg/.wav, max 5 MB). Fails if audio_url is inva"
method: POST
path: "/api/v1/inbox/voice-messages"
tags: ["inbox"]
---

# Send a voice note to a LinkedIn chat from a public audio URL (.mp3/.m4a/.ogg/.wav, max 5 MB). Fails if audio_url is inva

`POST /api/v1/inbox/voice-messages`

## Request

- Base URL: `https://crispy.sh`
- URL: `https://crispy.sh/api/v1/inbox/voice-messages`
- Auth: HTTP bearer

## Request body

- object
  - `chat_id` string: Existing chat ID to send the voice note to. Provide chat_id OR provider_id.
  - `provider_id` string: Recipient LinkedIn provider_id to start a new chat with. Provide chat_id OR provider_id.
  - `audio_url` string, required: Public URL to a .mp3/.m4a/.ogg/.wav audio file (max 5 MB). Required. Use upload_media to host a local file, or any public HTTPS URL.
  - `text_caption` string: Optional text caption shown alongside the voice note.
  - `campaign_id` string: Optional campaign tracking ID.

## Response `200`

Success

## Other responses

- `401`: Missing or expired API key
- `403`: Insufficient key scope or permission denied
- `429`: Rate limit exceeded

---

[API](https://skmtc.dev/crispy/apis/crispy-rest-api.md) · [All operations](https://skmtc.dev/crispy/apis/crispy-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crispy/apis/crispy-rest-api/revisions/6bed0974d9ce?raw)