---
title: "Event history timeline"
method: GET
path: "/analytics/history/{id}"
tags: ["analytics"]
---

# Event history timeline

`GET /analytics/history/{id}`

Lifecycle changes for a specific event. Requires Pro+ plan.

`change_type` values include `created`, `severity_change`,
`lanes_change`, `end_time_change`, `estimated_end_time_change`,
`archived`, `stale_sweep`, and `expired`. The last three all mean
the event is no longer active — see `archive_reason` on the
`TrafficEvent` schema for the distinction.

## Path parameters

- `id` string, required

## Response `200`

Array of history entries

## Other responses

- `403` — Analytics not available on current plan

---

[API](https://skmtc.net/road511/apis/road511-traffic-api.md) · [All operations](https://skmtc.net/road511/apis/road511-traffic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/road511/road511-traffic-api/versions/39a088b9c155/schema)