---
search:
  tags:
    - Topics
    - GET
seo:
  description: >-
    List the timeline extents for a topic… Reference for the GET
    /v2/topics/partition/id/{topic_part_id}/timeline-extents endpoint in the
    Roboto REST API.
sidebar:
  label: List timeline extents
  badge: GET
title: List timeline extents
type: openapi-operation
---
List the timeline extents for a topic partition.

A topic partition is one file's contribution to a topic; an extent
is the (min_ns, max_ns) range that partition covers under one
timeline source. The caller must have view access to the file the
partition belongs to.

### Access control
 - Restricted tokens need the API scope `api.everything_else`

`GET /v2/topics/partition/id/{topic_part_id}/timeline-extents`