---
title: "List Event Types"
method: GET
path: "/entities/event_types"
---

# List Event Types

`GET /entities/event_types`

## Request

- Base URL: `https://api-docs.session-exchange.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api-docs.session-exchange.com/entities/event_types`
- Auth: none declared

Return every event_type that's ever been emitted, with
cumulative count + first/last seen timestamps.

Backs the Atlas Workflows view's "all event-type rows are
always visible" feature. Cheap aggregation (single GROUP BY
over the events table, index-supported).

## Response `200`

Successful Response

- object

---

[API](https://skmtc.dev/session-exchange/apis/a4sx.md) · [All operations](https://skmtc.dev/session-exchange/apis/a4sx/llms.txt) · [OpenAPI document](https://skmtc.dev/session-exchange/apis/a4sx/revisions/abaefc33dfc7?raw)