---
title: "POST /api/sessionstart"
method: POST
path: "/api/sessionstart"
tags: ["Events"]
---

# POST /api/sessionstart

`POST /api/sessionstart`

## Request

- Base URL: `https://navigator-analytics.tweakwise.com`
- URL: `https://navigator-analytics.tweakwise.com/api/sessionstart`
- Auth: none declared

## Query parameters

- `instanceKey` string, required

## Request body

- SessionStartEventModel
  - `SessionKey` string: The key of the session. This key is used to group events that belong to the same session. Allowed characters are alphanumeric characters and hyphens.
  - `ProfileKey` string: The profile key identifying the visitor associated with this event. Must not include personally identifiable information (PII) to comply with GDPR guidelines.
  - `Source` string, nullable: The source of the event. Says something about where the event came from, like your website or mobile app.

## Response `204`

No Content

## Other responses

- `400`: Bad Request
- `401`: Unauthorized

---

[API](https://skmtc.dev/tweakwise/apis/tweakwise-analytics-api.md) - [All operations](https://skmtc.dev/tweakwise/apis/tweakwise-analytics-api/llms.txt) - [OpenAPI document](https://skmtc.dev/tweakwise/apis/tweakwise-analytics-api/revisions/39aa38af4005?raw)