---
title: "A visitor sent their first message. High volume; subscribe only if you mirror chats."
method: POST
path: "conversation.started"
---

# A visitor sent their first message. High volume; subscribe only if you mirror chats.

`POST conversation.started` (webhook)

## Headers

- `webhook-id` string, required
- `webhook-timestamp` string, required
- `webhook-signature` string, required

## Payload

- Event
  - `id` string, required
  - `object` 'event', required
  - `type` 'lead.captured' | 'handoff.requested' | 'outcome.submitted' | 'personal_link.opened' | 'meeting.booked' | 'meeting.rescheduled' | 'meeting.canceled' | 'conversation.started' | 'conversation.completed' | 'experiment.started' | 'experiment.winner_found' | 'knowledge.source_failed', required
  - `created_at` string, date-time, nullable, required
  - `api_version` string, required
  - `data` object, required: `object` is the contact, conversation, meeting, outcome request, link visit, experiment or knowledge source as the REST API returns it. lead.captured, meeting events and outcome.submitted also carry `conversation`; personal_link.opened carries `link` and `contact`.

## Acknowledgement `200`

Answer 2xx within 10 seconds; anything else is retried for three days.

---

[API](https://skmtc.dev/meetdarwin/apis/darwin-api.md) · [All operations](https://skmtc.dev/meetdarwin/apis/darwin-api/llms.txt) · [OpenAPI document](https://skmtc.dev/meetdarwin/apis/darwin-api/revisions/f93b0bcb454a?raw)