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Example
{
  "id": "lsn_01HX9N5AB3...",
  "object": "lesson",
  "cohort_id": "coh_01HX9...",
  "unit_id": "uni_01HX9...",
  "name": "The postulates of special relativity",
  "type": "reading",
  "position": 2,
  "enabled": true,
  "approved_at": "2026-05-10T13:00:00Z",
  "evaluable": true,
  "optional": false,
  "url": "https://app.hawkings.education/lessons/lsn_01HX9N5AB3",
  "metadata": {},
  "content": null,
  "activities": [],
  "assignment": null
}

​
Attributes

​
id
string
Prefix lsn_.
​
cohort_id
string
​
unit_id
string | null
Null if the lesson hangs directly off the cohort.
​
name
string
​
type
enum
reading | video | practice | assessment.
​
position
integer
Order within unit (or cohort).
​
enabled
boolean
​
evaluable
boolean
If true, completion contributes to course grade.
​
optional
boolean
​
content
LessonContent | null
​
activities
Activity[]
Expand to inline.
​
assignment
Assignment | null